./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem02_label42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem02_label42.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 6a1d98a51bcc97ee19e0458934f0b894e85cf8f8042e38117bf0e9bc0c63c9ce --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:38:40,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:38:40,853 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:38:40,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:38:40,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:38:40,873 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:38:40,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:38:40,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:38:40,874 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:38:40,875 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:38:40,875 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:38:40,875 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:38:40,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:38:40,876 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:38:40,876 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:38:40,876 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:38:40,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:38:40,877 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:38:40,877 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:38:40,877 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:38:40,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:38:40,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:38:40,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:38:40,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:38:40,879 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:38:40,880 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:38:40,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:38:40,880 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:38:40,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:38:40,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:38:40,881 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:38:40,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:38:40,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:38:40,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:38:40,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:38:40,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:38:40,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:38:40,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:38:40,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:38:40,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:38:40,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:38:40,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:38:40,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a1d98a51bcc97ee19e0458934f0b894e85cf8f8042e38117bf0e9bc0c63c9ce [2024-11-18 09:38:41,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:38:41,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:38:41,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:38:41,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:38:41,131 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:38:41,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem02_label42.c [2024-11-18 09:38:42,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:38:42,922 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:38:42,922 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label42.c [2024-11-18 09:38:42,937 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d368434/4b630ac8241d4bb4b14f096e712c4b86/FLAGfe7d4280c [2024-11-18 09:38:42,952 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d368434/4b630ac8241d4bb4b14f096e712c4b86 [2024-11-18 09:38:42,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:38:42,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:38:42,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:38:42,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:38:42,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:38:42,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:38:42" (1/1) ... [2024-11-18 09:38:42,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d54f3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:42, skipping insertion in model container [2024-11-18 09:38:42,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:38:42" (1/1) ... [2024-11-18 09:38:43,012 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:38:43,432 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/Problem02_label42.c[16787,16800] [2024-11-18 09:38:43,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:38:43,621 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:38:43,702 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/Problem02_label42.c[16787,16800] [2024-11-18 09:38:43,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:38:43,728 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:38:43,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43 WrapperNode [2024-11-18 09:38:43,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:38:43,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:38:43,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:38:43,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:38:43,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,795 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 669 [2024-11-18 09:38:43,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:38:43,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:38:43,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:38:43,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:38:43,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,831 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]. [2024-11-18 09:38:43,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:38:43,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:38:43,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:38:43,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:38:43,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (1/1) ... [2024-11-18 09:38:43,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:38:43,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:38:43,907 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) [2024-11-18 09:38:43,911 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 [2024-11-18 09:38:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:38:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:38:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:38:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:38:44,051 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:38:44,053 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:38:45,019 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-18 09:38:45,019 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:38:45,044 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:38:45,048 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 09:38:45,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:38:45 BoogieIcfgContainer [2024-11-18 09:38:45,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:38:45,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:38:45,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:38:45,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:38:45,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:38:42" (1/3) ... [2024-11-18 09:38:45,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd75788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:38:45, skipping insertion in model container [2024-11-18 09:38:45,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:38:43" (2/3) ... [2024-11-18 09:38:45,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd75788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:38:45, skipping insertion in model container [2024-11-18 09:38:45,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:38:45" (3/3) ... [2024-11-18 09:38:45,064 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2024-11-18 09:38:45,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:38:45,097 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:38:45,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:38:45,184 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;@580f8d92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:38:45,185 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:38:45,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 226 states have internal predecessors, (375), 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) [2024-11-18 09:38:45,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-18 09:38:45,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:38:45,205 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:38:45,206 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:38:45,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:38:45,212 INFO L85 PathProgramCache]: Analyzing trace with hash 499493077, now seen corresponding path program 1 times [2024-11-18 09:38:45,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:38:45,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421823500] [2024-11-18 09:38:45,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:38:45,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:38:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:38:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:38:45,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:38:45,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421823500] [2024-11-18 09:38:45,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421823500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:38:45,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:38:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:38:45,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343814204] [2024-11-18 09:38:45,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:38:45,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:38:45,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:38:45,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:38:45,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:38:45,860 INFO L87 Difference]: Start difference. First operand has 227 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 226 states have internal predecessors, (375), 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 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:38:46,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:38:46,618 INFO L93 Difference]: Finished difference Result 600 states and 1037 transitions. [2024-11-18 09:38:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:38:46,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-18 09:38:46,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:38:46,632 INFO L225 Difference]: With dead ends: 600 [2024-11-18 09:38:46,633 INFO L226 Difference]: Without dead ends: 309 [2024-11-18 09:38:46,637 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 [2024-11-18 09:38:46,640 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 66 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:38:46,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 171 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:38:46,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-18 09:38:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2024-11-18 09:38:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.3300653594771241) internal successors, (407), 306 states have internal predecessors, (407), 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) [2024-11-18 09:38:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 407 transitions. [2024-11-18 09:38:46,692 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 407 transitions. Word has length 100 [2024-11-18 09:38:46,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:38:46,693 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 407 transitions. [2024-11-18 09:38:46,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:38:46,693 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 407 transitions. [2024-11-18 09:38:46,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-18 09:38:46,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:38:46,699 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:38:46,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:38:46,699 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:38:46,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:38:46,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1323076000, now seen corresponding path program 1 times [2024-11-18 09:38:46,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:38:46,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126878277] [2024-11-18 09:38:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:38:46,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:38:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:38:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:38:46,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:38:46,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126878277] [2024-11-18 09:38:46,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126878277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:38:46,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:38:46,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:38:46,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622128242] [2024-11-18 09:38:46,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:38:46,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:38:46,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:38:46,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:38:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:38:46,946 INFO L87 Difference]: Start difference. First operand 307 states and 407 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:38:47,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:38:47,414 INFO L93 Difference]: Finished difference Result 758 states and 1034 transitions. [2024-11-18 09:38:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:38:47,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-18 09:38:47,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:38:47,420 INFO L225 Difference]: With dead ends: 758 [2024-11-18 09:38:47,420 INFO L226 Difference]: Without dead ends: 453 [2024-11-18 09:38:47,422 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 [2024-11-18 09:38:47,423 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 64 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:38:47,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 248 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:38:47,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-18 09:38:47,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2024-11-18 09:38:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.2787610619469028) internal successors, (578), 452 states have internal predecessors, (578), 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) [2024-11-18 09:38:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 578 transitions. [2024-11-18 09:38:47,445 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 578 transitions. Word has length 105 [2024-11-18 09:38:47,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:38:47,446 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 578 transitions. [2024-11-18 09:38:47,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:38:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 578 transitions. [2024-11-18 09:38:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-18 09:38:47,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:38:47,449 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:38:47,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:38:47,450 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:38:47,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:38:47,451 INFO L85 PathProgramCache]: Analyzing trace with hash 396760741, now seen corresponding path program 1 times [2024-11-18 09:38:47,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:38:47,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454557991] [2024-11-18 09:38:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:38:47,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:38:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:38:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:38:47,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:38:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454557991] [2024-11-18 09:38:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454557991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:38:47,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:38:47,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:38:47,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746125189] [2024-11-18 09:38:47,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:38:47,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:38:47,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:38:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:38:47,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:38:47,600 INFO L87 Difference]: Start difference. First operand 453 states and 578 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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) [2024-11-18 09:38:48,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:38:48,030 INFO L93 Difference]: Finished difference Result 1325 states and 1691 transitions. [2024-11-18 09:38:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:38:48,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 117 [2024-11-18 09:38:48,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:38:48,033 INFO L225 Difference]: With dead ends: 1325 [2024-11-18 09:38:48,034 INFO L226 Difference]: Without dead ends: 874 [2024-11-18 09:38:48,035 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 [2024-11-18 09:38:48,036 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 185 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:38:48,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 79 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:38:48,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-11-18 09:38:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2024-11-18 09:38:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.2302405498281788) internal successors, (1074), 873 states have internal predecessors, (1074), 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) [2024-11-18 09:38:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1074 transitions. [2024-11-18 09:38:48,075 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1074 transitions. Word has length 117 [2024-11-18 09:38:48,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:38:48,079 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1074 transitions. [2024-11-18 09:38:48,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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) [2024-11-18 09:38:48,080 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1074 transitions. [2024-11-18 09:38:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 09:38:48,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:38:48,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:38:48,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:38:48,085 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:38:48,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:38:48,086 INFO L85 PathProgramCache]: Analyzing trace with hash 279909752, now seen corresponding path program 1 times [2024-11-18 09:38:48,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:38:48,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009512366] [2024-11-18 09:38:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:38:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:38:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:38:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:38:48,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:38:48,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009512366] [2024-11-18 09:38:48,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009512366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:38:48,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:38:48,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:38:48,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060896705] [2024-11-18 09:38:48,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:38:48,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:38:48,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:38:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:38:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:38:48,279 INFO L87 Difference]: Start difference. First operand 874 states and 1074 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:38:48,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:38:48,775 INFO L93 Difference]: Finished difference Result 2594 states and 3192 transitions. [2024-11-18 09:38:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:38:48,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-11-18 09:38:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:38:48,784 INFO L225 Difference]: With dead ends: 2594 [2024-11-18 09:38:48,785 INFO L226 Difference]: Without dead ends: 1722 [2024-11-18 09:38:48,786 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 [2024-11-18 09:38:48,788 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 63 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:38:48,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 290 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:38:48,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2024-11-18 09:38:48,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1716. [2024-11-18 09:38:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1715 states have (on average 1.1900874635568512) internal successors, (2041), 1715 states have internal predecessors, (2041), 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) [2024-11-18 09:38:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2041 transitions. [2024-11-18 09:38:48,809 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2041 transitions. Word has length 130 [2024-11-18 09:38:48,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:38:48,810 INFO L471 AbstractCegarLoop]: Abstraction has 1716 states and 2041 transitions. [2024-11-18 09:38:48,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:38:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2041 transitions. [2024-11-18 09:38:48,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 09:38:48,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:38:48,812 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:38:48,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 09:38:48,813 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:38:48,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:38:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash -266021720, now seen corresponding path program 1 times [2024-11-18 09:38:48,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:38:48,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275312792] [2024-11-18 09:38:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:38:48,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:38:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:38:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:38:48,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:38:48,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275312792] [2024-11-18 09:38:48,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275312792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:38:48,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:38:48,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:38:48,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432312329] [2024-11-18 09:38:48,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:38:48,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:38:48,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:38:48,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:38:48,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:38:48,901 INFO L87 Difference]: Start difference. First operand 1716 states and 2041 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-11-18 09:38:49,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:38:49,243 INFO L93 Difference]: Finished difference Result 3852 states and 4554 transitions. [2024-11-18 09:38:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:38:49,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 146 [2024-11-18 09:38:49,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:38:49,248 INFO L225 Difference]: With dead ends: 3852 [2024-11-18 09:38:49,248 INFO L226 Difference]: Without dead ends: 1856 [2024-11-18 09:38:49,250 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 [2024-11-18 09:38:49,251 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 158 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:38:49,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 66 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:38:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2024-11-18 09:38:49,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1854. [2024-11-18 09:38:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1853 states have (on average 1.119805720453319) internal successors, (2075), 1853 states have internal predecessors, (2075), 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) [2024-11-18 09:38:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2075 transitions. [2024-11-18 09:38:49,273 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2075 transitions. Word has length 146 [2024-11-18 09:38:49,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:38:49,273 INFO L471 AbstractCegarLoop]: Abstraction has 1854 states and 2075 transitions. [2024-11-18 09:38:49,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-11-18 09:38:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2075 transitions. [2024-11-18 09:38:49,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 09:38:49,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:38:49,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:38:49,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 09:38:49,276 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:38:49,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:38:49,277 INFO L85 PathProgramCache]: Analyzing trace with hash -398781840, now seen corresponding path program 1 times [2024-11-18 09:38:49,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:38:49,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35234328] [2024-11-18 09:38:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:38:49,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:38:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:38:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:38:49,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:38:49,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35234328] [2024-11-18 09:38:49,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35234328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:38:49,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:38:49,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:38:49,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446253690] [2024-11-18 09:38:49,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:38:49,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:38:49,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:38:49,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:38:49,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:38:49,393 INFO L87 Difference]: Start difference. First operand 1854 states and 2075 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-11-18 09:38:49,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:38:49,923 INFO L93 Difference]: Finished difference Result 4127 states and 4671 transitions. [2024-11-18 09:38:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:38:49,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 147 [2024-11-18 09:38:49,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:38:49,930 INFO L225 Difference]: With dead ends: 4127 [2024-11-18 09:38:49,931 INFO L226 Difference]: Without dead ends: 2275 [2024-11-18 09:38:49,933 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 [2024-11-18 09:38:49,934 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 69 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:38:49,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 211 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:38:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2024-11-18 09:38:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2274. [2024-11-18 09:38:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 2273 states have (on average 1.1139463264408271) internal successors, (2532), 2273 states have internal predecessors, (2532), 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) [2024-11-18 09:38:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 2532 transitions. [2024-11-18 09:38:49,990 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 2532 transitions. Word has length 147 [2024-11-18 09:38:49,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:38:49,991 INFO L471 AbstractCegarLoop]: Abstraction has 2274 states and 2532 transitions. [2024-11-18 09:38:49,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-11-18 09:38:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 2532 transitions. [2024-11-18 09:38:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 09:38:49,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:38:49,995 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:38:49,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 09:38:49,996 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:38:49,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:38:49,996 INFO L85 PathProgramCache]: Analyzing trace with hash 770816786, now seen corresponding path program 1 times [2024-11-18 09:38:49,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:38:49,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498776554] [2024-11-18 09:38:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:38:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:38:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:38:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 09:38:50,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:38:50,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498776554] [2024-11-18 09:38:50,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498776554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:38:50,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:38:50,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:38:50,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339333674] [2024-11-18 09:38:50,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:38:50,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:38:50,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:38:50,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:38:50,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:38:50,091 INFO L87 Difference]: Start difference. First operand 2274 states and 2532 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2024-11-18 09:38:50,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:38:50,281 INFO L93 Difference]: Finished difference Result 4111 states and 4568 transitions. [2024-11-18 09:38:50,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:38:50,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 160 [2024-11-18 09:38:50,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:38:50,286 INFO L225 Difference]: With dead ends: 4111 [2024-11-18 09:38:50,287 INFO L226 Difference]: Without dead ends: 1697 [2024-11-18 09:38:50,289 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 [2024-11-18 09:38:50,290 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 171 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:38:50,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 19 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:38:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-11-18 09:38:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1697. [2024-11-18 09:38:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1696 states have (on average 1.067806603773585) internal successors, (1811), 1696 states have internal predecessors, (1811), 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) [2024-11-18 09:38:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 1811 transitions. [2024-11-18 09:38:50,316 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 1811 transitions. Word has length 160 [2024-11-18 09:38:50,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:38:50,316 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 1811 transitions. [2024-11-18 09:38:50,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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) [2024-11-18 09:38:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 1811 transitions. [2024-11-18 09:38:50,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-18 09:38:50,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:38:50,320 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:38:50,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 09:38:50,321 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:38:50,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:38:50,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1025198346, now seen corresponding path program 1 times [2024-11-18 09:38:50,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:38:50,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864901163] [2024-11-18 09:38:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:38:50,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:38:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:38:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 09:38:50,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:38:50,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864901163] [2024-11-18 09:38:50,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864901163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:38:50,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:38:50,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:38:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572935600] [2024-11-18 09:38:50,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:38:50,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:38:50,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:38:50,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:38:50,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:38:50,428 INFO L87 Difference]: Start difference. First operand 1697 states and 1811 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) [2024-11-18 09:38:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:38:50,742 INFO L93 Difference]: Finished difference Result 3812 states and 4074 transitions. [2024-11-18 09:38:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:38:50,743 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 194 [2024-11-18 09:38:50,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:38:50,746 INFO L225 Difference]: With dead ends: 3812 [2024-11-18 09:38:50,746 INFO L226 Difference]: Without dead ends: 1134 [2024-11-18 09:38:50,748 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 [2024-11-18 09:38:50,749 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 95 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:38:50,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 209 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:38:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2024-11-18 09:38:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2024-11-18 09:38:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 1.0467784642541924) internal successors, (1186), 1133 states have internal predecessors, (1186), 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) [2024-11-18 09:38:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1186 transitions. [2024-11-18 09:38:50,770 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1186 transitions. Word has length 194 [2024-11-18 09:38:50,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:38:50,771 INFO L471 AbstractCegarLoop]: Abstraction has 1134 states and 1186 transitions. [2024-11-18 09:38:50,771 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) [2024-11-18 09:38:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1186 transitions. [2024-11-18 09:38:50,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-18 09:38:50,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:38:50,774 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 09:38:50,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 09:38:50,775 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:38:50,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:38:50,775 INFO L85 PathProgramCache]: Analyzing trace with hash -409226142, now seen corresponding path program 1 times [2024-11-18 09:38:50,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:38:50,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536682694] [2024-11-18 09:38:50,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:38:50,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:38:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:38:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-18 09:38:50,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:38:50,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536682694] [2024-11-18 09:38:50,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536682694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:38:50,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:38:50,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:38:50,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244022709] [2024-11-18 09:38:50,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:38:50,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:38:50,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:38:50,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:38:50,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:38:50,937 INFO L87 Difference]: Start difference. First operand 1134 states and 1186 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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) [2024-11-18 09:38:51,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:38:51,180 INFO L93 Difference]: Finished difference Result 2124 states and 2227 transitions. [2024-11-18 09:38:51,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:38:51,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 237 [2024-11-18 09:38:51,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:38:51,184 INFO L225 Difference]: With dead ends: 2124 [2024-11-18 09:38:51,184 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 09:38:51,186 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 [2024-11-18 09:38:51,187 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 55 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:38:51,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 170 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:38:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 09:38:51,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 09:38:51,191 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) [2024-11-18 09:38:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 09:38:51,191 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 237 [2024-11-18 09:38:51,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:38:51,192 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 09:38:51,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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) [2024-11-18 09:38:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 09:38:51,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 09:38:51,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 09:38:51,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 09:38:51,198 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:38:51,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 09:38:51,331 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 09:38:51,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:38:51 BoogieIcfgContainer [2024-11-18 09:38:51,349 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 09:38:51,350 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 09:38:51,350 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 09:38:51,350 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 09:38:51,351 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:38:45" (3/4) ... [2024-11-18 09:38:51,353 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 09:38:51,373 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-18 09:38:51,374 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 09:38:51,376 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 09:38:51,377 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 09:38:51,493 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 09:38:51,494 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 09:38:51,494 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 09:38:51,495 INFO L158 Benchmark]: Toolchain (without parser) took 8538.59ms. Allocated memory was 184.5MB in the beginning and 369.1MB in the end (delta: 184.5MB). Free memory was 113.8MB in the beginning and 181.9MB in the end (delta: -68.1MB). Peak memory consumption was 117.6MB. Max. memory is 16.1GB. [2024-11-18 09:38:51,495 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 184.5MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 09:38:51,495 INFO L158 Benchmark]: CACSL2BoogieTranslator took 771.58ms. Allocated memory is still 184.5MB. Free memory was 113.6MB in the beginning and 145.0MB in the end (delta: -31.4MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2024-11-18 09:38:51,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.36ms. Allocated memory is still 184.5MB. Free memory was 145.0MB in the beginning and 138.9MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-18 09:38:51,496 INFO L158 Benchmark]: Boogie Preprocessor took 66.31ms. Allocated memory is still 184.5MB. Free memory was 138.9MB in the beginning and 133.6MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-18 09:38:51,496 INFO L158 Benchmark]: RCFGBuilder took 1185.34ms. Allocated memory is still 184.5MB. Free memory was 133.6MB in the beginning and 147.1MB in the end (delta: -13.6MB). Peak memory consumption was 86.6MB. Max. memory is 16.1GB. [2024-11-18 09:38:51,496 INFO L158 Benchmark]: TraceAbstraction took 6299.09ms. Allocated memory was 184.5MB in the beginning and 369.1MB in the end (delta: 184.5MB). Free memory was 146.4MB in the beginning and 194.4MB in the end (delta: -48.0MB). Peak memory consumption was 136.5MB. Max. memory is 16.1GB. [2024-11-18 09:38:51,497 INFO L158 Benchmark]: Witness Printer took 144.33ms. Allocated memory is still 369.1MB. Free memory was 194.4MB in the beginning and 181.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 09:38:51,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 184.5MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 771.58ms. Allocated memory is still 184.5MB. Free memory was 113.6MB in the beginning and 145.0MB in the end (delta: -31.4MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.36ms. Allocated memory is still 184.5MB. Free memory was 145.0MB in the beginning and 138.9MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.31ms. Allocated memory is still 184.5MB. Free memory was 138.9MB in the beginning and 133.6MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1185.34ms. Allocated memory is still 184.5MB. Free memory was 133.6MB in the beginning and 147.1MB in the end (delta: -13.6MB). Peak memory consumption was 86.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6299.09ms. Allocated memory was 184.5MB in the beginning and 369.1MB in the end (delta: 184.5MB). Free memory was 146.4MB in the beginning and 194.4MB in the end (delta: -48.0MB). Peak memory consumption was 136.5MB. Max. memory is 16.1GB. * Witness Printer took 144.33ms. Allocated memory is still 369.1MB. Free memory was 194.4MB in the beginning and 181.9MB in the end (delta: 12.6MB). 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: 482]: 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, 227 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 926 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 926 mSDsluCounter, 1463 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 123 mSDsCounter, 594 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2949 IncrementalHoareTripleChecker+Invalid, 3543 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 594 mSolverCounterUnsat, 1340 mSDtfsCounter, 2949 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2274occurred in iteration=6, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1336 NumberOfCodeBlocks, 1336 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1327 ConstructedInterpolants, 0 QuantifiedInterpolants, 2623 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 633/633 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: 616]: Loop Invariant Derived loop invariant: ((((((a28 == 10) && (a19 == 1)) || ((a17 <= 8) && (a28 <= 7))) || (((a25 == 1) && (a17 <= 8)) && (a19 == 1))) || (((a19 != 1) && (a17 <= 8)) && (a28 <= 10))) || (((9 <= a28) && (a17 <= 8)) && (a28 <= 10))) RESULT: Ultimate proved your program to be correct! [2024-11-18 09:38:51,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE