./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/eca-rers2012/Problem14_label06.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ac6301e42f829c2e7435f753cf6d38a67b1a5fed7ebb544243474a63eb4f91e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:25:18,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:25:18,215 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:25:18,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:25:18,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:25:18,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:25:18,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:25:18,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:25:18,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:25:18,252 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:25:18,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:25:18,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:25:18,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:25:18,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:25:18,254 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:25:18,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:25:18,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:25:18,255 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:25:18,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:25:18,256 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:25:18,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:25:18,257 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:25:18,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:25:18,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:25:18,258 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:25:18,258 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:25:18,259 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:25:18,259 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:25:18,260 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:25:18,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:25:18,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:25:18,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:25:18,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:25:18,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:25:18,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:25:18,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:25:18,262 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:25:18,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:25:18,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:25:18,275 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:25:18,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:25:18,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:25:18,276 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac6301e42f829c2e7435f753cf6d38a67b1a5fed7ebb544243474a63eb4f91e [2024-11-08 11:25:18,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:25:18,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:25:18,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:25:18,580 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:25:18,580 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:25:18,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label06.c [2024-11-08 11:25:20,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:25:20,405 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:25:20,406 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label06.c [2024-11-08 11:25:20,429 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eccce459/21c373dfdc9e4e6aaac51ed4856f58f4/FLAGfad6854a7 [2024-11-08 11:25:20,448 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eccce459/21c373dfdc9e4e6aaac51ed4856f58f4 [2024-11-08 11:25:20,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:25:20,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:25:20,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:25:20,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:25:20,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:25:20,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:25:20" (1/1) ... [2024-11-08 11:25:20,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122ecff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:20, skipping insertion in model container [2024-11-08 11:25:20,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:25:20" (1/1) ... [2024-11-08 11:25:20,517 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:25:20,778 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/eca-rers2012/Problem14_label06.c[6235,6248] [2024-11-08 11:25:21,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:25:21,021 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:25:21,043 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/eca-rers2012/Problem14_label06.c[6235,6248] [2024-11-08 11:25:21,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:25:21,137 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:25:21,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21 WrapperNode [2024-11-08 11:25:21,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:25:21,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:25:21,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:25:21,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:25:21,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,248 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 859 [2024-11-08 11:25:21,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:25:21,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:25:21,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:25:21,250 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:25:21,261 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,276 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,322 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 11:25:21,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,370 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:25:21,399 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:25:21,399 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:25:21,399 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:25:21,400 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (1/1) ... [2024-11-08 11:25:21,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:25:21,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:25:21,436 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 11:25:21,440 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 11:25:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:25:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:25:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:25:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:25:21,547 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:25:21,549 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:25:22,818 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-11-08 11:25:22,818 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:25:22,836 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:25:22,837 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:25:22,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:25:22 BoogieIcfgContainer [2024-11-08 11:25:22,837 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:25:22,840 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:25:22,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:25:22,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:25:22,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:25:20" (1/3) ... [2024-11-08 11:25:22,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e0f2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:25:22, skipping insertion in model container [2024-11-08 11:25:22,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:25:21" (2/3) ... [2024-11-08 11:25:22,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e0f2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:25:22, skipping insertion in model container [2024-11-08 11:25:22,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:25:22" (3/3) ... [2024-11-08 11:25:22,846 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label06.c [2024-11-08 11:25:22,864 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:25:22,864 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:25:22,941 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:25:22,952 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;@6b70e847, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:25:22,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:25:22,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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 11:25:22,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 11:25:22,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:22,972 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:22,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:22,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:22,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1818267785, now seen corresponding path program 1 times [2024-11-08 11:25:22,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:22,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699167998] [2024-11-08 11:25:22,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:22,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:23,452 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 11:25:23,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:23,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699167998] [2024-11-08 11:25:23,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699167998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:23,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:25:23,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:25:23,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435052298] [2024-11-08 11:25:23,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:23,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:23,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:23,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:23,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:25:23,500 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 11:25:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:24,527 INFO L93 Difference]: Finished difference Result 685 states and 1216 transitions. [2024-11-08 11:25:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:24,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2024-11-08 11:25:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:24,541 INFO L225 Difference]: With dead ends: 685 [2024-11-08 11:25:24,541 INFO L226 Difference]: Without dead ends: 360 [2024-11-08 11:25:24,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:25:24,547 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 157 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:24,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 139 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 11:25:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-08 11:25:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-11-08 11:25:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4206128133704736) internal successors, (510), 359 states have internal predecessors, (510), 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 11:25:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2024-11-08 11:25:24,599 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 61 [2024-11-08 11:25:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:24,600 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2024-11-08 11:25:24,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 11:25:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2024-11-08 11:25:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-08 11:25:24,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:24,606 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 11:25:24,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:25:24,607 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:24,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1094221175, now seen corresponding path program 1 times [2024-11-08 11:25:24,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:24,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062766881] [2024-11-08 11:25:24,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:24,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:25:25,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:25,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062766881] [2024-11-08 11:25:25,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062766881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:25,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:25:25,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:25:25,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798968874] [2024-11-08 11:25:25,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:25,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:25:25,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:25,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:25:25,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:25:25,102 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 11:25:26,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:26,079 INFO L93 Difference]: Finished difference Result 1074 states and 1446 transitions. [2024-11-08 11:25:26,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:25:26,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2024-11-08 11:25:26,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:26,083 INFO L225 Difference]: With dead ends: 1074 [2024-11-08 11:25:26,084 INFO L226 Difference]: Without dead ends: 716 [2024-11-08 11:25:26,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:25:26,086 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 419 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:26,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 121 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 11:25:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-08 11:25:26,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2024-11-08 11:25:26,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.2615384615384615) internal successors, (902), 715 states have internal predecessors, (902), 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 11:25:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 902 transitions. [2024-11-08 11:25:26,124 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 902 transitions. Word has length 140 [2024-11-08 11:25:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:26,125 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 902 transitions. [2024-11-08 11:25:26,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 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 11:25:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 902 transitions. [2024-11-08 11:25:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-08 11:25:26,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:26,129 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:26,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:25:26,129 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:26,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash -216480168, now seen corresponding path program 1 times [2024-11-08 11:25:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:26,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119464298] [2024-11-08 11:25:26,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:26,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 11:25:26,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:26,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119464298] [2024-11-08 11:25:26,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119464298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:25:26,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302056039] [2024-11-08 11:25:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:26,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:26,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:25:26,438 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 11:25:26,439 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 11:25:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:26,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:25:26,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:25:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:25:26,695 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:25:26,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302056039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:26,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:25:26,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 11:25:26,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050102301] [2024-11-08 11:25:26,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:26,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:26,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:26,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:26,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:25:26,698 INFO L87 Difference]: Start difference. First operand 716 states and 902 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 11:25:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:27,391 INFO L93 Difference]: Finished difference Result 1964 states and 2499 transitions. [2024-11-08 11:25:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:27,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 166 [2024-11-08 11:25:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:27,397 INFO L225 Difference]: With dead ends: 1964 [2024-11-08 11:25:27,397 INFO L226 Difference]: Without dead ends: 1250 [2024-11-08 11:25:27,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:25:27,399 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 121 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:27,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 95 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 11:25:27,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2024-11-08 11:25:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2024-11-08 11:25:27,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.2361889511609288) internal successors, (1544), 1249 states have internal predecessors, (1544), 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 11:25:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1544 transitions. [2024-11-08 11:25:27,450 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1544 transitions. Word has length 166 [2024-11-08 11:25:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:27,451 INFO L471 AbstractCegarLoop]: Abstraction has 1250 states and 1544 transitions. [2024-11-08 11:25:27,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 11:25:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1544 transitions. [2024-11-08 11:25:27,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-08 11:25:27,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:27,459 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:27,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 11:25:27,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:27,660 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:27,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash 64556132, now seen corresponding path program 1 times [2024-11-08 11:25:27,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:27,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519627822] [2024-11-08 11:25:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:27,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 11:25:27,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:27,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519627822] [2024-11-08 11:25:27,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519627822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:27,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:25:27,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:25:27,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653138547] [2024-11-08 11:25:27,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:27,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:25:27,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:27,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:25:27,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:25:27,956 INFO L87 Difference]: Start difference. First operand 1250 states and 1544 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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 11:25:28,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:28,706 INFO L93 Difference]: Finished difference Result 2705 states and 3353 transitions. [2024-11-08 11:25:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:25:28,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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 220 [2024-11-08 11:25:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:28,712 INFO L225 Difference]: With dead ends: 2705 [2024-11-08 11:25:28,713 INFO L226 Difference]: Without dead ends: 1606 [2024-11-08 11:25:28,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:25:28,718 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 116 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:28,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 119 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 11:25:28,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2024-11-08 11:25:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2024-11-08 11:25:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.1221183800623054) internal successors, (1801), 1605 states have internal predecessors, (1801), 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 11:25:28,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1801 transitions. [2024-11-08 11:25:28,749 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1801 transitions. Word has length 220 [2024-11-08 11:25:28,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:28,750 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 1801 transitions. [2024-11-08 11:25:28,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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 11:25:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1801 transitions. [2024-11-08 11:25:28,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-08 11:25:28,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:28,755 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:28,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 11:25:28,757 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:28,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:28,758 INFO L85 PathProgramCache]: Analyzing trace with hash 696718706, now seen corresponding path program 1 times [2024-11-08 11:25:28,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:28,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724345158] [2024-11-08 11:25:28,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:28,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 224 proven. 130 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-08 11:25:29,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:29,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724345158] [2024-11-08 11:25:29,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724345158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:25:29,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003570147] [2024-11-08 11:25:29,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:29,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:29,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:25:29,317 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 11:25:29,321 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 11:25:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:29,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:25:29,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:25:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-08 11:25:29,816 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:25:29,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003570147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:29,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:25:29,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-08 11:25:29,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270459061] [2024-11-08 11:25:29,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:29,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:29,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:29,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:29,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:25:29,820 INFO L87 Difference]: Start difference. First operand 1606 states and 1801 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 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 11:25:30,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:30,366 INFO L93 Difference]: Finished difference Result 3388 states and 3901 transitions. [2024-11-08 11:25:30,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:30,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 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 347 [2024-11-08 11:25:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:30,374 INFO L225 Difference]: With dead ends: 3388 [2024-11-08 11:25:30,375 INFO L226 Difference]: Without dead ends: 1962 [2024-11-08 11:25:30,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:25:30,378 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:30,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 47 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:25:30,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2024-11-08 11:25:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1784. [2024-11-08 11:25:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.1318003365114975) internal successors, (2018), 1783 states have internal predecessors, (2018), 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 11:25:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2018 transitions. [2024-11-08 11:25:30,416 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2018 transitions. Word has length 347 [2024-11-08 11:25:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:30,418 INFO L471 AbstractCegarLoop]: Abstraction has 1784 states and 2018 transitions. [2024-11-08 11:25:30,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 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 11:25:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2018 transitions. [2024-11-08 11:25:30,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-08 11:25:30,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:30,423 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:30,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 11:25:30,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:30,627 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:30,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1460708036, now seen corresponding path program 1 times [2024-11-08 11:25:30,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:30,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758236292] [2024-11-08 11:25:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:30,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-08 11:25:31,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:31,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758236292] [2024-11-08 11:25:31,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758236292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:31,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:25:31,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:25:31,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797923468] [2024-11-08 11:25:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:31,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:31,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:25:31,037 INFO L87 Difference]: Start difference. First operand 1784 states and 2018 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 11:25:31,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:31,588 INFO L93 Difference]: Finished difference Result 3744 states and 4282 transitions. [2024-11-08 11:25:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:31,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 351 [2024-11-08 11:25:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:31,596 INFO L225 Difference]: With dead ends: 3744 [2024-11-08 11:25:31,596 INFO L226 Difference]: Without dead ends: 2140 [2024-11-08 11:25:31,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:25:31,602 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 101 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:31,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 77 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:25:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2024-11-08 11:25:31,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2140. [2024-11-08 11:25:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.1280972417017299) internal successors, (2413), 2139 states have internal predecessors, (2413), 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 11:25:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2413 transitions. [2024-11-08 11:25:31,643 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2413 transitions. Word has length 351 [2024-11-08 11:25:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:31,644 INFO L471 AbstractCegarLoop]: Abstraction has 2140 states and 2413 transitions. [2024-11-08 11:25:31,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 11:25:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2413 transitions. [2024-11-08 11:25:31,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-08 11:25:31,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:31,649 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-11-08 11:25:31,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 11:25:31,649 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:31,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:31,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1192788200, now seen corresponding path program 1 times [2024-11-08 11:25:31,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:31,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160562909] [2024-11-08 11:25:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:31,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-11-08 11:25:31,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:31,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160562909] [2024-11-08 11:25:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160562909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:31,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:25:31,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:25:31,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270312119] [2024-11-08 11:25:31,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:31,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:31,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:31,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:31,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:25:31,827 INFO L87 Difference]: Start difference. First operand 2140 states and 2413 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 11:25:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:32,460 INFO L93 Difference]: Finished difference Result 4634 states and 5316 transitions. [2024-11-08 11:25:32,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:32,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 378 [2024-11-08 11:25:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:32,471 INFO L225 Difference]: With dead ends: 4634 [2024-11-08 11:25:32,471 INFO L226 Difference]: Without dead ends: 2674 [2024-11-08 11:25:32,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:25:32,477 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 126 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:32,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 67 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 11:25:32,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2024-11-08 11:25:32,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2318. [2024-11-08 11:25:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.131635735865343) internal successors, (2622), 2317 states have internal predecessors, (2622), 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 11:25:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2622 transitions. [2024-11-08 11:25:32,535 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2622 transitions. Word has length 378 [2024-11-08 11:25:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:32,536 INFO L471 AbstractCegarLoop]: Abstraction has 2318 states and 2622 transitions. [2024-11-08 11:25:32,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 11:25:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2622 transitions. [2024-11-08 11:25:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-08 11:25:32,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:32,541 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:32,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:25:32,541 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:32,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:32,542 INFO L85 PathProgramCache]: Analyzing trace with hash 529160561, now seen corresponding path program 1 times [2024-11-08 11:25:32,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:32,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379929840] [2024-11-08 11:25:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:32,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2024-11-08 11:25:32,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379929840] [2024-11-08 11:25:32,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379929840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:25:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318512415] [2024-11-08 11:25:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:32,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:32,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:25:32,922 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 11:25:32,923 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 11:25:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:33,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:25:33,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:25:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-11-08 11:25:33,161 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:25:33,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318512415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:33,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:25:33,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 11:25:33,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145520078] [2024-11-08 11:25:33,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:33,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:33,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:33,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:33,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:25:33,166 INFO L87 Difference]: Start difference. First operand 2318 states and 2622 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 11:25:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:33,699 INFO L93 Difference]: Finished difference Result 4812 states and 5533 transitions. [2024-11-08 11:25:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:33,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 385 [2024-11-08 11:25:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:33,710 INFO L225 Difference]: With dead ends: 4812 [2024-11-08 11:25:33,710 INFO L226 Difference]: Without dead ends: 2674 [2024-11-08 11:25:33,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:25:33,714 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 123 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:33,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 224 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:25:33,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2024-11-08 11:25:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2024-11-08 11:25:33,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.139917695473251) internal successors, (3047), 2673 states have internal predecessors, (3047), 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 11:25:33,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3047 transitions. [2024-11-08 11:25:33,762 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3047 transitions. Word has length 385 [2024-11-08 11:25:33,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:33,763 INFO L471 AbstractCegarLoop]: Abstraction has 2674 states and 3047 transitions. [2024-11-08 11:25:33,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 11:25:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3047 transitions. [2024-11-08 11:25:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-08 11:25:33,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:33,769 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:33,804 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 11:25:33,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:33,986 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:33,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash 672820240, now seen corresponding path program 1 times [2024-11-08 11:25:33,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:33,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616293704] [2024-11-08 11:25:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:33,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-11-08 11:25:34,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:34,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616293704] [2024-11-08 11:25:34,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616293704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:34,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:25:34,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:25:34,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906106170] [2024-11-08 11:25:34,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:34,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:34,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:34,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:34,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:25:34,193 INFO L87 Difference]: Start difference. First operand 2674 states and 3047 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 11:25:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:34,722 INFO L93 Difference]: Finished difference Result 6058 states and 6995 transitions. [2024-11-08 11:25:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 457 [2024-11-08 11:25:34,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:34,733 INFO L225 Difference]: With dead ends: 6058 [2024-11-08 11:25:34,733 INFO L226 Difference]: Without dead ends: 3564 [2024-11-08 11:25:34,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:25:34,737 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 121 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:34,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 57 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 11:25:34,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2024-11-08 11:25:34,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3564. [2024-11-08 11:25:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3563 states have (on average 1.1400505192253718) internal successors, (4062), 3563 states have internal predecessors, (4062), 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 11:25:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4062 transitions. [2024-11-08 11:25:34,798 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4062 transitions. Word has length 457 [2024-11-08 11:25:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:34,799 INFO L471 AbstractCegarLoop]: Abstraction has 3564 states and 4062 transitions. [2024-11-08 11:25:34,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 11:25:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4062 transitions. [2024-11-08 11:25:34,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-08 11:25:34,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:34,825 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:34,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 11:25:34,826 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:34,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:34,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1535481681, now seen corresponding path program 1 times [2024-11-08 11:25:34,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:34,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866059476] [2024-11-08 11:25:34,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:34,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 739 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-11-08 11:25:35,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:35,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866059476] [2024-11-08 11:25:35,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866059476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:35,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:25:35,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:25:35,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020752787] [2024-11-08 11:25:35,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:35,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:25:35,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:35,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:25:35,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:25:35,288 INFO L87 Difference]: Start difference. First operand 3564 states and 4062 transitions. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 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 11:25:35,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:35,899 INFO L93 Difference]: Finished difference Result 7155 states and 8168 transitions. [2024-11-08 11:25:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:25:35,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 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 532 [2024-11-08 11:25:35,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:35,913 INFO L225 Difference]: With dead ends: 7155 [2024-11-08 11:25:35,914 INFO L226 Difference]: Without dead ends: 3742 [2024-11-08 11:25:35,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:25:35,918 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 124 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:35,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 17 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 11:25:35,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2024-11-08 11:25:35,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3564. [2024-11-08 11:25:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3563 states have (on average 1.0940218916643278) internal successors, (3898), 3563 states have internal predecessors, (3898), 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 11:25:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 3898 transitions. [2024-11-08 11:25:35,975 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 3898 transitions. Word has length 532 [2024-11-08 11:25:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:35,975 INFO L471 AbstractCegarLoop]: Abstraction has 3564 states and 3898 transitions. [2024-11-08 11:25:35,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 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 11:25:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 3898 transitions. [2024-11-08 11:25:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-11-08 11:25:35,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:35,980 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:35,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 11:25:35,981 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:35,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:35,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2053013747, now seen corresponding path program 1 times [2024-11-08 11:25:35,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:35,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758598618] [2024-11-08 11:25:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:35,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-11-08 11:25:36,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:36,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758598618] [2024-11-08 11:25:36,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758598618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:25:36,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928692235] [2024-11-08 11:25:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:36,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:36,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:25:36,486 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 11:25:36,487 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 11:25:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:36,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:25:36,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:25:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2024-11-08 11:25:37,261 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:25:37,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928692235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:37,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:25:37,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-08 11:25:37,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630042585] [2024-11-08 11:25:37,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:37,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:37,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:37,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:25:37,264 INFO L87 Difference]: Start difference. First operand 3564 states and 3898 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 11:25:37,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:37,674 INFO L93 Difference]: Finished difference Result 4634 states and 5054 transitions. [2024-11-08 11:25:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:37,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 540 [2024-11-08 11:25:37,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:37,692 INFO L225 Difference]: With dead ends: 4634 [2024-11-08 11:25:37,693 INFO L226 Difference]: Without dead ends: 4632 [2024-11-08 11:25:37,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:25:37,695 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:37,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 11 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 11:25:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2024-11-08 11:25:37,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 3742. [2024-11-08 11:25:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.0954290296712108) internal successors, (4098), 3741 states have internal predecessors, (4098), 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 11:25:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4098 transitions. [2024-11-08 11:25:37,766 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4098 transitions. Word has length 540 [2024-11-08 11:25:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:37,767 INFO L471 AbstractCegarLoop]: Abstraction has 3742 states and 4098 transitions. [2024-11-08 11:25:37,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 11:25:37,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4098 transitions. [2024-11-08 11:25:37,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2024-11-08 11:25:37,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:37,773 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:37,790 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 11:25:37,973 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 11:25:37,974 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:37,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:37,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1324592890, now seen corresponding path program 1 times [2024-11-08 11:25:37,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:37,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340206907] [2024-11-08 11:25:37,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:37,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 943 proven. 11 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2024-11-08 11:25:38,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:38,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340206907] [2024-11-08 11:25:38,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340206907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:25:38,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033509551] [2024-11-08 11:25:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:38,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:38,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:25:38,653 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 11:25:38,655 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 11:25:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:38,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:25:38,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:25:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2024-11-08 11:25:38,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:25:38,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033509551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:38,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:25:38,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-08 11:25:38,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522664507] [2024-11-08 11:25:38,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:38,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:38,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:38,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:25:38,988 INFO L87 Difference]: Start difference. First operand 3742 states and 4098 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 11:25:39,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:39,382 INFO L93 Difference]: Finished difference Result 5168 states and 5627 transitions. [2024-11-08 11:25:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:39,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 587 [2024-11-08 11:25:39,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:39,398 INFO L225 Difference]: With dead ends: 5168 [2024-11-08 11:25:39,401 INFO L226 Difference]: Without dead ends: 5166 [2024-11-08 11:25:39,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:25:39,405 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 141 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:39,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 11 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 11:25:39,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2024-11-08 11:25:39,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 3742. [2024-11-08 11:25:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.0954290296712108) internal successors, (4098), 3741 states have internal predecessors, (4098), 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 11:25:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4098 transitions. [2024-11-08 11:25:39,470 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4098 transitions. Word has length 587 [2024-11-08 11:25:39,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:39,471 INFO L471 AbstractCegarLoop]: Abstraction has 3742 states and 4098 transitions. [2024-11-08 11:25:39,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 11:25:39,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4098 transitions. [2024-11-08 11:25:39,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-08 11:25:39,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:25:39,477 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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 11:25:39,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 11:25:39,678 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 11:25:39,678 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:25:39,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:25:39,679 INFO L85 PathProgramCache]: Analyzing trace with hash 100418186, now seen corresponding path program 1 times [2024-11-08 11:25:39,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:25:39,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261446689] [2024-11-08 11:25:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:39,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:25:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 908 proven. 2 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2024-11-08 11:25:40,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:25:40,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261446689] [2024-11-08 11:25:40,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261446689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:25:40,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823903636] [2024-11-08 11:25:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:25:40,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:25:40,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:25:40,368 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 11:25:40,369 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 11:25:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:25:40,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:25:40,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:25:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 989 trivial. 0 not checked. [2024-11-08 11:25:40,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:25:40,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823903636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:25:40,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:25:40,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-08 11:25:40,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285378674] [2024-11-08 11:25:40,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:25:40,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:25:40,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:25:40,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:25:40,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:25:40,651 INFO L87 Difference]: Start difference. First operand 3742 states and 4098 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 11:25:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:25:41,034 INFO L93 Difference]: Finished difference Result 8192 states and 9025 transitions. [2024-11-08 11:25:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:25:41,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 594 [2024-11-08 11:25:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:25:41,036 INFO L225 Difference]: With dead ends: 8192 [2024-11-08 11:25:41,036 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 11:25:41,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 11:25:41,042 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 130 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:25:41,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 212 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 11:25:41,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 11:25:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 11:25:41,043 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 11:25:41,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 11:25:41,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 594 [2024-11-08 11:25:41,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:25:41,044 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 11:25:41,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 11:25:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 11:25:41,045 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 11:25:41,047 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 11:25:41,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 11:25:41,248 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 11:25:41,251 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:25:41,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 11:25:41,682 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 11:25:41,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 11:25:41 BoogieIcfgContainer [2024-11-08 11:25:41,701 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 11:25:41,701 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 11:25:41,701 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 11:25:41,701 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 11:25:41,702 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:25:22" (3/4) ... [2024-11-08 11:25:41,704 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 11:25:41,719 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-08 11:25:41,719 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-08 11:25:41,720 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 11:25:41,721 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 11:25:41,892 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 11:25:41,892 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-08 11:25:41,892 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 11:25:41,893 INFO L158 Benchmark]: Toolchain (without parser) took 21440.58ms. Allocated memory was 163.6MB in the beginning and 482.3MB in the end (delta: 318.8MB). Free memory was 106.0MB in the beginning and 203.4MB in the end (delta: -97.3MB). Peak memory consumption was 223.0MB. Max. memory is 16.1GB. [2024-11-08 11:25:41,893 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 123.7MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 11:25:41,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 683.92ms. Allocated memory is still 163.6MB. Free memory was 105.6MB in the beginning and 115.4MB in the end (delta: -9.8MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2024-11-08 11:25:41,894 INFO L158 Benchmark]: Boogie Procedure Inliner took 110.32ms. Allocated memory is still 163.6MB. Free memory was 115.4MB in the beginning and 105.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-08 11:25:41,894 INFO L158 Benchmark]: Boogie Preprocessor took 148.19ms. Allocated memory is still 163.6MB. Free memory was 105.0MB in the beginning and 92.1MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 11:25:41,894 INFO L158 Benchmark]: RCFGBuilder took 1438.78ms. Allocated memory was 163.6MB in the beginning and 228.6MB in the end (delta: 65.0MB). Free memory was 92.1MB in the beginning and 168.0MB in the end (delta: -75.9MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. [2024-11-08 11:25:41,894 INFO L158 Benchmark]: TraceAbstraction took 18861.06ms. Allocated memory was 228.6MB in the beginning and 482.3MB in the end (delta: 253.8MB). Free memory was 168.0MB in the beginning and 217.0MB in the end (delta: -49.0MB). Peak memory consumption was 205.8MB. Max. memory is 16.1GB. [2024-11-08 11:25:41,894 INFO L158 Benchmark]: Witness Printer took 191.34ms. Allocated memory is still 482.3MB. Free memory was 217.0MB in the beginning and 203.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 11:25:41,899 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 123.7MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 683.92ms. Allocated memory is still 163.6MB. Free memory was 105.6MB in the beginning and 115.4MB in the end (delta: -9.8MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 110.32ms. Allocated memory is still 163.6MB. Free memory was 115.4MB in the beginning and 105.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 148.19ms. Allocated memory is still 163.6MB. Free memory was 105.0MB in the beginning and 92.1MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 1438.78ms. Allocated memory was 163.6MB in the beginning and 228.6MB in the end (delta: 65.0MB). Free memory was 92.1MB in the beginning and 168.0MB in the end (delta: -75.9MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. * TraceAbstraction took 18861.06ms. Allocated memory was 228.6MB in the beginning and 482.3MB in the end (delta: 253.8MB). Free memory was 168.0MB in the beginning and 217.0MB in the end (delta: -49.0MB). Peak memory consumption was 205.8MB. Max. memory is 16.1GB. * Witness Printer took 191.34ms. Allocated memory is still 482.3MB. Free memory was 217.0MB in the beginning and 203.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. 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: 197]: 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, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.3s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1801 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1801 mSDsluCounter, 1197 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 958 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6841 IncrementalHoareTripleChecker+Invalid, 7799 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 958 mSolverCounterUnsat, 1128 mSDtfsCounter, 6841 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2656 GetRequests, 2623 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3742occurred in iteration=11, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 3026 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 7377 NumberOfCodeBlocks, 7377 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7358 ConstructedInterpolants, 0 QuantifiedInterpolants, 25942 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3371 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 19 InterpolantComputations, 13 PerfectInterpolantSequences, 11453/11996 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: 890]: Loop Invariant Derived loop invariant: ((((((7 <= a15) && (a24 == 1)) || ((9 <= a21) && (a24 == 1))) || ((a24 == 1) && (12 <= a12))) || (((((long long) a12 + 43) <= 0) && (a15 <= 8)) && (a21 <= 7))) || ((a24 == 1) && (a21 <= 7))) RESULT: Ultimate proved your program to be correct! [2024-11-08 11:25:41,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE