./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label12.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 a6e4197d0572096f9d487e671de9ba1541e800c13a9d5ac01008d7630fe3cd68 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:19:44,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:19:44,713 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:19:44,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:19:44,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:19:44,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:19:44,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:19:44,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:19:44,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:19:44,748 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:19:44,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:19:44,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:19:44,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:19:44,749 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:19:44,749 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:19:44,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:19:44,750 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:19:44,750 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:19:44,754 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:19:44,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:19:44,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:19:44,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:19:44,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:19:44,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:19:44,756 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:19:44,756 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:19:44,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:19:44,756 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:19:44,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:19:44,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:19:44,757 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:19:44,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:19:44,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:19:44,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:19:44,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:19:44,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:19:44,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:19:44,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:19:44,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:19:44,761 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:19:44,761 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:19:44,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:19:44,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6e4197d0572096f9d487e671de9ba1541e800c13a9d5ac01008d7630fe3cd68 [2024-11-19 18:19:44,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:19:44,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:19:44,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:19:44,983 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:19:44,984 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:19:44,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label12.c [2024-11-19 18:19:46,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:19:46,534 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:19:46,534 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label12.c [2024-11-19 18:19:46,551 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7f0497df/3d7e9d129ea04295bbad789b61829af1/FLAGd9abb7b1f [2024-11-19 18:19:46,849 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7f0497df/3d7e9d129ea04295bbad789b61829af1 [2024-11-19 18:19:46,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:19:46,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:19:46,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:19:46,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:19:46,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:19:46,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:19:46" (1/1) ... [2024-11-19 18:19:46,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1546ed2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:46, skipping insertion in model container [2024-11-19 18:19:46,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:19:46" (1/1) ... [2024-11-19 18:19:46,918 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:19:47,165 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/Problem15_label12.c[7168,7181] [2024-11-19 18:19:47,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:19:47,496 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:19:47,521 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/Problem15_label12.c[7168,7181] [2024-11-19 18:19:47,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:19:47,663 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:19:47,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47 WrapperNode [2024-11-19 18:19:47,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:19:47,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:19:47,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:19:47,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:19:47,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:47,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:47,806 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2024-11-19 18:19:47,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:19:47,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:19:47,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:19:47,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:19:47,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:47,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:47,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:47,937 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]. [2024-11-19 18:19:47,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:47,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:47,980 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:47,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:48,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:48,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:48,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:19:48,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:19:48,039 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:19:48,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:19:48,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (1/1) ... [2024-11-19 18:19:48,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:19:48,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:19:48,075 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) [2024-11-19 18:19:48,078 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 [2024-11-19 18:19:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:19:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:19:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:19:48,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:19:48,171 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:19:48,173 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:19:50,068 INFO L? ?]: Removed 246 outVars from TransFormulas that were not future-live. [2024-11-19 18:19:50,069 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:19:50,100 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:19:50,100 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:19:50,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:19:50 BoogieIcfgContainer [2024-11-19 18:19:50,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:19:50,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:19:50,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:19:50,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:19:50,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:19:46" (1/3) ... [2024-11-19 18:19:50,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427676f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:19:50, skipping insertion in model container [2024-11-19 18:19:50,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:47" (2/3) ... [2024-11-19 18:19:50,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427676f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:19:50, skipping insertion in model container [2024-11-19 18:19:50,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:19:50" (3/3) ... [2024-11-19 18:19:50,107 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label12.c [2024-11-19 18:19:50,120 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:19:50,120 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:19:50,183 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:19:50,188 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;@11d8d962, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:19:50,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:19:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:50,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 18:19:50,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:19:50,202 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] [2024-11-19 18:19:50,203 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:19:50,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:19:50,207 INFO L85 PathProgramCache]: Analyzing trace with hash 118092897, now seen corresponding path program 1 times [2024-11-19 18:19:50,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:19:50,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559708528] [2024-11-19 18:19:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:19:50,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:19:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:19:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:19:50,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:19:50,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559708528] [2024-11-19 18:19:50,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559708528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:19:50,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:19:50,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:19:50,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110000141] [2024-11-19 18:19:50,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:19:50,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:19:50,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:19:50,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:19:50,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:19:50,647 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 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 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:19:52,579 INFO L93 Difference]: Finished difference Result 1154 states and 2106 transitions. [2024-11-19 18:19:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:19:52,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2024-11-19 18:19:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:19:52,594 INFO L225 Difference]: With dead ends: 1154 [2024-11-19 18:19:52,595 INFO L226 Difference]: Without dead ends: 665 [2024-11-19 18:19:52,598 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 [2024-11-19 18:19:52,601 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 262 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:19:52,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 383 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-19 18:19:52,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-11-19 18:19:52,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2024-11-19 18:19:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.4818731117824773) internal successors, (981), 662 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:52,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 981 transitions. [2024-11-19 18:19:52,683 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 981 transitions. Word has length 59 [2024-11-19 18:19:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:19:52,683 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 981 transitions. [2024-11-19 18:19:52,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 981 transitions. [2024-11-19 18:19:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-19 18:19:52,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:19:52,687 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:19:52,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:19:52,689 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:19:52,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:19:52,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1794665063, now seen corresponding path program 1 times [2024-11-19 18:19:52,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:19:52,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379816212] [2024-11-19 18:19:52,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:19:52,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:19:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:19:53,098 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:19:53,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:19:53,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379816212] [2024-11-19 18:19:53,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379816212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:19:53,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:19:53,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:19:53,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329177228] [2024-11-19 18:19:53,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:19:53,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:19:53,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:19:53,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:19:53,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:19:53,102 INFO L87 Difference]: Start difference. First operand 663 states and 981 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:54,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:19:54,190 INFO L93 Difference]: Finished difference Result 1624 states and 2315 transitions. [2024-11-19 18:19:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:19:54,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-11-19 18:19:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:19:54,196 INFO L225 Difference]: With dead ends: 1624 [2024-11-19 18:19:54,196 INFO L226 Difference]: Without dead ends: 963 [2024-11-19 18:19:54,198 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 [2024-11-19 18:19:54,199 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 237 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:19:54,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 337 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:19:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2024-11-19 18:19:54,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2024-11-19 18:19:54,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.362785862785863) internal successors, (1311), 962 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1311 transitions. [2024-11-19 18:19:54,220 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1311 transitions. Word has length 124 [2024-11-19 18:19:54,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:19:54,220 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1311 transitions. [2024-11-19 18:19:54,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1311 transitions. [2024-11-19 18:19:54,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 18:19:54,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:19:54,223 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:19:54,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:19:54,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:19:54,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:19:54,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1505786198, now seen corresponding path program 1 times [2024-11-19 18:19:54,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:19:54,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458032888] [2024-11-19 18:19:54,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:19:54,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:19:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:19:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:19:54,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:19:54,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458032888] [2024-11-19 18:19:54,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458032888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:19:54,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:19:54,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:19:54,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933757083] [2024-11-19 18:19:54,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:19:54,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:19:54,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:19:54,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:19:54,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:19:54,427 INFO L87 Difference]: Start difference. First operand 963 states and 1311 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:19:55,623 INFO L93 Difference]: Finished difference Result 2229 states and 3186 transitions. [2024-11-19 18:19:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:19:55,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2024-11-19 18:19:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:19:55,630 INFO L225 Difference]: With dead ends: 2229 [2024-11-19 18:19:55,630 INFO L226 Difference]: Without dead ends: 1567 [2024-11-19 18:19:55,632 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 [2024-11-19 18:19:55,633 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 256 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:19:55,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 318 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:19:55,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2024-11-19 18:19:55,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1266. [2024-11-19 18:19:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1265 states have (on average 1.3043478260869565) internal successors, (1650), 1265 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:55,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1650 transitions. [2024-11-19 18:19:55,654 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1650 transitions. Word has length 129 [2024-11-19 18:19:55,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:19:55,654 INFO L471 AbstractCegarLoop]: Abstraction has 1266 states and 1650 transitions. [2024-11-19 18:19:55,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:55,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1650 transitions. [2024-11-19 18:19:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-19 18:19:55,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:19:55,660 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:19:55,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:19:55,660 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:19:55,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:19:55,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1334591182, now seen corresponding path program 1 times [2024-11-19 18:19:55,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:19:55,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761447595] [2024-11-19 18:19:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:19:55,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:19:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:19:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:19:55,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:19:55,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761447595] [2024-11-19 18:19:55,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761447595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:19:55,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:19:55,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:19:55,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31716458] [2024-11-19 18:19:55,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:19:55,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:19:55,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:19:55,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:19:55,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:19:55,869 INFO L87 Difference]: Start difference. First operand 1266 states and 1650 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:19:58,229 INFO L93 Difference]: Finished difference Result 4670 states and 6170 transitions. [2024-11-19 18:19:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:19:58,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2024-11-19 18:19:58,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:19:58,246 INFO L225 Difference]: With dead ends: 4670 [2024-11-19 18:19:58,246 INFO L226 Difference]: Without dead ends: 3406 [2024-11-19 18:19:58,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:19:58,252 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 486 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:19:58,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 379 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-19 18:19:58,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2024-11-19 18:19:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 3381. [2024-11-19 18:19:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 3380 states have (on average 1.2366863905325445) internal successors, (4180), 3380 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 4180 transitions. [2024-11-19 18:19:58,295 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 4180 transitions. Word has length 225 [2024-11-19 18:19:58,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:19:58,295 INFO L471 AbstractCegarLoop]: Abstraction has 3381 states and 4180 transitions. [2024-11-19 18:19:58,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:58,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 4180 transitions. [2024-11-19 18:19:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-19 18:19:58,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:19:58,300 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:19:58,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:19:58,301 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:19:58,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:19:58,301 INFO L85 PathProgramCache]: Analyzing trace with hash 385527484, now seen corresponding path program 1 times [2024-11-19 18:19:58,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:19:58,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651084828] [2024-11-19 18:19:58,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:19:58,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:19:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:19:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-19 18:19:58,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:19:58,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651084828] [2024-11-19 18:19:58,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651084828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:19:58,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:19:58,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:19:58,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164888123] [2024-11-19 18:19:58,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:19:58,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:19:58,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:19:58,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:19:58,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:19:58,466 INFO L87 Difference]: Start difference. First operand 3381 states and 4180 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:59,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:19:59,802 INFO L93 Difference]: Finished difference Result 8563 states and 10754 transitions. [2024-11-19 18:19:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:19:59,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 229 [2024-11-19 18:19:59,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:19:59,816 INFO L225 Difference]: With dead ends: 8563 [2024-11-19 18:19:59,817 INFO L226 Difference]: Without dead ends: 5483 [2024-11-19 18:19:59,821 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 [2024-11-19 18:19:59,822 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:19:59,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 339 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 18:19:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5483 states. [2024-11-19 18:19:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5483 to 5478. [2024-11-19 18:19:59,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 1.16870549570933) internal successors, (6401), 5477 states have internal predecessors, (6401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 6401 transitions. [2024-11-19 18:19:59,901 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 6401 transitions. Word has length 229 [2024-11-19 18:19:59,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:19:59,901 INFO L471 AbstractCegarLoop]: Abstraction has 5478 states and 6401 transitions. [2024-11-19 18:19:59,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:19:59,902 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 6401 transitions. [2024-11-19 18:19:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-19 18:19:59,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:19:59,906 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:19:59,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:19:59,906 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:19:59,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:19:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1064012372, now seen corresponding path program 1 times [2024-11-19 18:19:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:19:59,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892268443] [2024-11-19 18:19:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:19:59,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:19:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-19 18:20:00,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:00,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892268443] [2024-11-19 18:20:00,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892268443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:00,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:00,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:20:00,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763862747] [2024-11-19 18:20:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:00,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:00,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:00,407 INFO L87 Difference]: Start difference. First operand 5478 states and 6401 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:01,408 INFO L93 Difference]: Finished difference Result 10655 states and 12489 transitions. [2024-11-19 18:20:01,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:01,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 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 331 [2024-11-19 18:20:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:01,422 INFO L225 Difference]: With dead ends: 10655 [2024-11-19 18:20:01,422 INFO L226 Difference]: Without dead ends: 5478 [2024-11-19 18:20:01,427 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 [2024-11-19 18:20:01,428 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:01,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 359 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:20:01,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2024-11-19 18:20:01,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 5478. [2024-11-19 18:20:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 1.1676100054774512) internal successors, (6395), 5477 states have internal predecessors, (6395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:01,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 6395 transitions. [2024-11-19 18:20:01,512 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 6395 transitions. Word has length 331 [2024-11-19 18:20:01,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:01,513 INFO L471 AbstractCegarLoop]: Abstraction has 5478 states and 6395 transitions. [2024-11-19 18:20:01,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:01,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 6395 transitions. [2024-11-19 18:20:01,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-11-19 18:20:01,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:01,516 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:01,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:20:01,517 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:01,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:01,517 INFO L85 PathProgramCache]: Analyzing trace with hash 131002693, now seen corresponding path program 1 times [2024-11-19 18:20:01,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:01,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177361389] [2024-11-19 18:20:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:01,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-19 18:20:01,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:01,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177361389] [2024-11-19 18:20:01,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177361389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:01,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:01,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:01,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423033356] [2024-11-19 18:20:01,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:01,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:01,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:01,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:01,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:01,687 INFO L87 Difference]: Start difference. First operand 5478 states and 6395 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:03,205 INFO L93 Difference]: Finished difference Result 11851 states and 14151 transitions. [2024-11-19 18:20:03,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:03,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 346 [2024-11-19 18:20:03,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:03,219 INFO L225 Difference]: With dead ends: 11851 [2024-11-19 18:20:03,219 INFO L226 Difference]: Without dead ends: 6674 [2024-11-19 18:20:03,223 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 [2024-11-19 18:20:03,224 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 256 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:03,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 322 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 18:20:03,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6674 states. [2024-11-19 18:20:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6674 to 4876. [2024-11-19 18:20:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4875 states have (on average 1.1805128205128206) internal successors, (5755), 4875 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 5755 transitions. [2024-11-19 18:20:03,284 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 5755 transitions. Word has length 346 [2024-11-19 18:20:03,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:03,285 INFO L471 AbstractCegarLoop]: Abstraction has 4876 states and 5755 transitions. [2024-11-19 18:20:03,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 5755 transitions. [2024-11-19 18:20:03,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-19 18:20:03,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:03,289 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:03,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:20:03,290 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:03,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:03,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1130119938, now seen corresponding path program 1 times [2024-11-19 18:20:03,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:03,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72468868] [2024-11-19 18:20:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:03,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 113 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:20:04,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:04,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72468868] [2024-11-19 18:20:04,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72468868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:20:04,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200112191] [2024-11-19 18:20:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:04,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:04,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:20:04,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:20:04,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 18:20:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:04,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:20:04,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:20:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:20:04,328 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:20:04,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200112191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:04,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:20:04,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 18:20:04,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632367052] [2024-11-19 18:20:04,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:04,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:04,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:04,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:20:04,330 INFO L87 Difference]: Start difference. First operand 4876 states and 5755 transitions. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:05,453 INFO L93 Difference]: Finished difference Result 11855 states and 14250 transitions. [2024-11-19 18:20:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:05,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 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 405 [2024-11-19 18:20:05,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:05,468 INFO L225 Difference]: With dead ends: 11855 [2024-11-19 18:20:05,469 INFO L226 Difference]: Without dead ends: 7280 [2024-11-19 18:20:05,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:20:05,475 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:05,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 345 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:20:05,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7280 states. [2024-11-19 18:20:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7280 to 6679. [2024-11-19 18:20:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6679 states, 6678 states have (on average 1.1647199760407307) internal successors, (7778), 6678 states have internal predecessors, (7778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6679 states to 6679 states and 7778 transitions. [2024-11-19 18:20:05,558 INFO L78 Accepts]: Start accepts. Automaton has 6679 states and 7778 transitions. Word has length 405 [2024-11-19 18:20:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:05,559 INFO L471 AbstractCegarLoop]: Abstraction has 6679 states and 7778 transitions. [2024-11-19 18:20:05,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 6679 states and 7778 transitions. [2024-11-19 18:20:05,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-19 18:20:05,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:05,563 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:05,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 18:20:05,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:05,765 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:05,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1682645463, now seen corresponding path program 1 times [2024-11-19 18:20:05,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:05,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250191832] [2024-11-19 18:20:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:05,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:06,205 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 315 proven. 39 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-19 18:20:06,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:06,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250191832] [2024-11-19 18:20:06,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250191832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:20:06,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33385683] [2024-11-19 18:20:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:06,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:06,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:20:06,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:20:06,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 18:20:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:06,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 18:20:06,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:20:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 315 proven. 39 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-19 18:20:07,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:20:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 315 proven. 39 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-19 18:20:07,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33385683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:20:07,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:20:07,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 18:20:07,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770009302] [2024-11-19 18:20:07,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:20:07,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 18:20:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 18:20:07,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 18:20:07,660 INFO L87 Difference]: Start difference. First operand 6679 states and 7778 transitions. Second operand has 9 states, 9 states have (on average 72.66666666666667) internal successors, (654), 8 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:11,986 INFO L93 Difference]: Finished difference Result 19597 states and 22611 transitions. [2024-11-19 18:20:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 18:20:11,987 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 72.66666666666667) internal successors, (654), 8 states have internal predecessors, (654), 0 states have call successors, (0), 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 422 [2024-11-19 18:20:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:12,002 INFO L225 Difference]: With dead ends: 19597 [2024-11-19 18:20:12,002 INFO L226 Difference]: Without dead ends: 7876 [2024-11-19 18:20:12,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2024-11-19 18:20:12,010 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 2642 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5926 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 6611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 5926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:12,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2642 Valid, 256 Invalid, 6611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 5926 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-19 18:20:12,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2024-11-19 18:20:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 6976. [2024-11-19 18:20:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6976 states, 6975 states have (on average 1.1105376344086022) internal successors, (7746), 6975 states have internal predecessors, (7746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6976 states to 6976 states and 7746 transitions. [2024-11-19 18:20:12,079 INFO L78 Accepts]: Start accepts. Automaton has 6976 states and 7746 transitions. Word has length 422 [2024-11-19 18:20:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:12,079 INFO L471 AbstractCegarLoop]: Abstraction has 6976 states and 7746 transitions. [2024-11-19 18:20:12,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.66666666666667) internal successors, (654), 8 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6976 states and 7746 transitions. [2024-11-19 18:20:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-19 18:20:12,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:12,082 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:12,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 18:20:12,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-19 18:20:12,283 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:12,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1464529448, now seen corresponding path program 1 times [2024-11-19 18:20:12,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:12,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330965334] [2024-11-19 18:20:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:12,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-19 18:20:12,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:12,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330965334] [2024-11-19 18:20:12,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330965334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:12,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:12,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:12,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11096637] [2024-11-19 18:20:12,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:12,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:12,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:12,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:12,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:12,551 INFO L87 Difference]: Start difference. First operand 6976 states and 7746 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:13,400 INFO L93 Difference]: Finished difference Result 15446 states and 17263 transitions. [2024-11-19 18:20:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:13,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 436 [2024-11-19 18:20:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:13,411 INFO L225 Difference]: With dead ends: 15446 [2024-11-19 18:20:13,411 INFO L226 Difference]: Without dead ends: 8472 [2024-11-19 18:20:13,417 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 [2024-11-19 18:20:13,418 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 267 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:13,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 554 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 18:20:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8472 states. [2024-11-19 18:20:13,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8472 to 8171. [2024-11-19 18:20:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8171 states, 8170 states have (on average 1.088984088127295) internal successors, (8897), 8170 states have internal predecessors, (8897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8171 states to 8171 states and 8897 transitions. [2024-11-19 18:20:13,495 INFO L78 Accepts]: Start accepts. Automaton has 8171 states and 8897 transitions. Word has length 436 [2024-11-19 18:20:13,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:13,495 INFO L471 AbstractCegarLoop]: Abstraction has 8171 states and 8897 transitions. [2024-11-19 18:20:13,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 8171 states and 8897 transitions. [2024-11-19 18:20:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-11-19 18:20:13,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:13,499 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:13,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 18:20:13,499 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:13,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:13,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2118497435, now seen corresponding path program 1 times [2024-11-19 18:20:13,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:13,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74627142] [2024-11-19 18:20:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:13,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-11-19 18:20:13,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:13,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74627142] [2024-11-19 18:20:13,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74627142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:13,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:13,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561459726] [2024-11-19 18:20:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:13,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:13,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:13,771 INFO L87 Difference]: Start difference. First operand 8171 states and 8897 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:14,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:14,555 INFO L93 Difference]: Finished difference Result 18731 states and 20550 transitions. [2024-11-19 18:20:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:14,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 533 [2024-11-19 18:20:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:14,571 INFO L225 Difference]: With dead ends: 18731 [2024-11-19 18:20:14,571 INFO L226 Difference]: Without dead ends: 10562 [2024-11-19 18:20:14,578 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 [2024-11-19 18:20:14,579 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 271 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:14,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 202 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:20:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10562 states. [2024-11-19 18:20:14,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10562 to 9963. [2024-11-19 18:20:14,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9963 states, 9962 states have (on average 1.0847219433848625) internal successors, (10806), 9962 states have internal predecessors, (10806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9963 states to 9963 states and 10806 transitions. [2024-11-19 18:20:14,678 INFO L78 Accepts]: Start accepts. Automaton has 9963 states and 10806 transitions. Word has length 533 [2024-11-19 18:20:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:14,678 INFO L471 AbstractCegarLoop]: Abstraction has 9963 states and 10806 transitions. [2024-11-19 18:20:14,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 9963 states and 10806 transitions. [2024-11-19 18:20:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2024-11-19 18:20:14,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:14,683 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:14,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 18:20:14,683 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:14,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1773865919, now seen corresponding path program 1 times [2024-11-19 18:20:14,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:14,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042453778] [2024-11-19 18:20:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:14,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-19 18:20:14,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:14,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042453778] [2024-11-19 18:20:14,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042453778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:14,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:14,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:14,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994157517] [2024-11-19 18:20:14,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:14,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:14,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:14,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:14,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:14,933 INFO L87 Difference]: Start difference. First operand 9963 states and 10806 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:15,647 INFO L93 Difference]: Finished difference Result 19922 states and 21652 transitions. [2024-11-19 18:20:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 560 [2024-11-19 18:20:15,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:15,659 INFO L225 Difference]: With dead ends: 19922 [2024-11-19 18:20:15,660 INFO L226 Difference]: Without dead ends: 10260 [2024-11-19 18:20:15,667 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 [2024-11-19 18:20:15,668 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 437 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:15,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 69 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:20:15,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10260 states. [2024-11-19 18:20:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10260 to 9961. [2024-11-19 18:20:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9961 states, 9960 states have (on average 1.0845381526104418) internal successors, (10802), 9960 states have internal predecessors, (10802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 10802 transitions. [2024-11-19 18:20:15,754 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 10802 transitions. Word has length 560 [2024-11-19 18:20:15,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:15,754 INFO L471 AbstractCegarLoop]: Abstraction has 9961 states and 10802 transitions. [2024-11-19 18:20:15,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:15,754 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 10802 transitions. [2024-11-19 18:20:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2024-11-19 18:20:15,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:15,758 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:15,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 18:20:15,758 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:15,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:15,758 INFO L85 PathProgramCache]: Analyzing trace with hash -566181386, now seen corresponding path program 1 times [2024-11-19 18:20:15,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:15,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782725843] [2024-11-19 18:20:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:15,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 426 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-19 18:20:16,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:16,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782725843] [2024-11-19 18:20:16,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782725843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:16,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:16,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:16,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828482495] [2024-11-19 18:20:16,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:16,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:16,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:16,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:16,089 INFO L87 Difference]: Start difference. First operand 9961 states and 10802 transitions. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:16,846 INFO L93 Difference]: Finished difference Result 22611 states and 24594 transitions. [2024-11-19 18:20:16,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 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 586 [2024-11-19 18:20:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:16,863 INFO L225 Difference]: With dead ends: 22611 [2024-11-19 18:20:16,863 INFO L226 Difference]: Without dead ends: 12652 [2024-11-19 18:20:16,877 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 [2024-11-19 18:20:16,881 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 198 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:16,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 173 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:20:16,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12652 states. [2024-11-19 18:20:17,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12652 to 12054. [2024-11-19 18:20:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12054 states, 12053 states have (on average 1.0817223927652866) internal successors, (13038), 12053 states have internal predecessors, (13038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12054 states to 12054 states and 13038 transitions. [2024-11-19 18:20:17,060 INFO L78 Accepts]: Start accepts. Automaton has 12054 states and 13038 transitions. Word has length 586 [2024-11-19 18:20:17,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:17,061 INFO L471 AbstractCegarLoop]: Abstraction has 12054 states and 13038 transitions. [2024-11-19 18:20:17,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:17,061 INFO L276 IsEmpty]: Start isEmpty. Operand 12054 states and 13038 transitions. [2024-11-19 18:20:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-19 18:20:17,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:17,068 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:17,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 18:20:17,068 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:17,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:17,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1867245461, now seen corresponding path program 1 times [2024-11-19 18:20:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:17,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177675324] [2024-11-19 18:20:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 264 proven. 188 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-19 18:20:17,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:17,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177675324] [2024-11-19 18:20:17,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177675324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:20:17,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20664201] [2024-11-19 18:20:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:17,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:17,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:20:17,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:20:17,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 18:20:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:17,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:20:17,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:20:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-11-19 18:20:18,504 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:20:18,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20664201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:18,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:20:18,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 18:20:18,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265974668] [2024-11-19 18:20:18,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:18,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:20:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:20:18,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:20:18,506 INFO L87 Difference]: Start difference. First operand 12054 states and 13038 transitions. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:19,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:19,625 INFO L93 Difference]: Finished difference Result 35839 states and 38890 transitions. [2024-11-19 18:20:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:20:19,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 594 [2024-11-19 18:20:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:19,653 INFO L225 Difference]: With dead ends: 35839 [2024-11-19 18:20:19,654 INFO L226 Difference]: Without dead ends: 24086 [2024-11-19 18:20:19,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:20:19,665 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 619 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:19,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 154 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:20:19,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24086 states. [2024-11-19 18:20:19,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24086 to 20489. [2024-11-19 18:20:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20489 states, 20488 states have (on average 1.0808766106989458) internal successors, (22145), 20488 states have internal predecessors, (22145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20489 states to 20489 states and 22145 transitions. [2024-11-19 18:20:19,849 INFO L78 Accepts]: Start accepts. Automaton has 20489 states and 22145 transitions. Word has length 594 [2024-11-19 18:20:19,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:19,850 INFO L471 AbstractCegarLoop]: Abstraction has 20489 states and 22145 transitions. [2024-11-19 18:20:19,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:19,850 INFO L276 IsEmpty]: Start isEmpty. Operand 20489 states and 22145 transitions. [2024-11-19 18:20:19,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-11-19 18:20:19,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:19,855 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:19,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 18:20:20,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:20,056 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:20,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:20,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1852804858, now seen corresponding path program 1 times [2024-11-19 18:20:20,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:20,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585839063] [2024-11-19 18:20:20,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:20,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2024-11-19 18:20:20,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:20,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585839063] [2024-11-19 18:20:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585839063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:20,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:20,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:20,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845999561] [2024-11-19 18:20:20,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:20,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:20,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:20,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:20,378 INFO L87 Difference]: Start difference. First operand 20489 states and 22145 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:21,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:21,127 INFO L93 Difference]: Finished difference Result 44566 states and 48444 transitions. [2024-11-19 18:20:21,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:21,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 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 638 [2024-11-19 18:20:21,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:21,151 INFO L225 Difference]: With dead ends: 44566 [2024-11-19 18:20:21,152 INFO L226 Difference]: Without dead ends: 24079 [2024-11-19 18:20:21,165 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 [2024-11-19 18:20:21,166 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 252 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:21,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 543 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:20:21,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24079 states. [2024-11-19 18:20:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24079 to 23779. [2024-11-19 18:20:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23779 states, 23778 states have (on average 1.0647657498528051) internal successors, (25318), 23778 states have internal predecessors, (25318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:21,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23779 states to 23779 states and 25318 transitions. [2024-11-19 18:20:21,361 INFO L78 Accepts]: Start accepts. Automaton has 23779 states and 25318 transitions. Word has length 638 [2024-11-19 18:20:21,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:21,362 INFO L471 AbstractCegarLoop]: Abstraction has 23779 states and 25318 transitions. [2024-11-19 18:20:21,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:21,362 INFO L276 IsEmpty]: Start isEmpty. Operand 23779 states and 25318 transitions. [2024-11-19 18:20:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2024-11-19 18:20:21,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:21,370 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:21,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 18:20:21,370 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:21,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash 838645165, now seen corresponding path program 1 times [2024-11-19 18:20:21,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:21,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058759021] [2024-11-19 18:20:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:21,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2024-11-19 18:20:21,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:21,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058759021] [2024-11-19 18:20:21,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058759021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:21,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:21,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:21,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735037021] [2024-11-19 18:20:21,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:21,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:21,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:21,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:21,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:21,834 INFO L87 Difference]: Start difference. First operand 23779 states and 25318 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:22,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:22,612 INFO L93 Difference]: Finished difference Result 48167 states and 51252 transitions. [2024-11-19 18:20:22,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:22,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 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 688 [2024-11-19 18:20:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:22,635 INFO L225 Difference]: With dead ends: 48167 [2024-11-19 18:20:22,635 INFO L226 Difference]: Without dead ends: 24390 [2024-11-19 18:20:22,650 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 [2024-11-19 18:20:22,650 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 264 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:22,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 527 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:20:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24390 states. [2024-11-19 18:20:22,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24390 to 23477. [2024-11-19 18:20:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23477 states, 23476 states have (on average 1.0616800136309423) internal successors, (24924), 23476 states have internal predecessors, (24924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23477 states to 23477 states and 24924 transitions. [2024-11-19 18:20:22,889 INFO L78 Accepts]: Start accepts. Automaton has 23477 states and 24924 transitions. Word has length 688 [2024-11-19 18:20:22,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:22,889 INFO L471 AbstractCegarLoop]: Abstraction has 23477 states and 24924 transitions. [2024-11-19 18:20:22,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:22,890 INFO L276 IsEmpty]: Start isEmpty. Operand 23477 states and 24924 transitions. [2024-11-19 18:20:22,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2024-11-19 18:20:22,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:22,900 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-19 18:20:22,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 18:20:22,900 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:22,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:22,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1597872221, now seen corresponding path program 1 times [2024-11-19 18:20:22,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:22,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327720080] [2024-11-19 18:20:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:22,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 602 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-11-19 18:20:23,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327720080] [2024-11-19 18:20:23,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327720080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:23,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:23,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:23,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567927130] [2024-11-19 18:20:23,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:23,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:23,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:23,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:23,226 INFO L87 Difference]: Start difference. First operand 23477 states and 24924 transitions. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:23,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:23,988 INFO L93 Difference]: Finished difference Result 46653 states and 49545 transitions. [2024-11-19 18:20:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:23,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 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 744 [2024-11-19 18:20:23,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:24,009 INFO L225 Difference]: With dead ends: 46653 [2024-11-19 18:20:24,009 INFO L226 Difference]: Without dead ends: 23477 [2024-11-19 18:20:24,021 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 [2024-11-19 18:20:24,021 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 174 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:24,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 508 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:20:24,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23477 states. [2024-11-19 18:20:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23477 to 23477. [2024-11-19 18:20:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23477 states, 23476 states have (on average 1.0388481853808145) internal successors, (24388), 23476 states have internal predecessors, (24388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:24,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23477 states to 23477 states and 24388 transitions. [2024-11-19 18:20:24,193 INFO L78 Accepts]: Start accepts. Automaton has 23477 states and 24388 transitions. Word has length 744 [2024-11-19 18:20:24,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:24,193 INFO L471 AbstractCegarLoop]: Abstraction has 23477 states and 24388 transitions. [2024-11-19 18:20:24,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 23477 states and 24388 transitions. [2024-11-19 18:20:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2024-11-19 18:20:24,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:24,203 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:24,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 18:20:24,203 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:24,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:24,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1045679782, now seen corresponding path program 1 times [2024-11-19 18:20:24,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:24,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809809758] [2024-11-19 18:20:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1251 backedges. 860 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2024-11-19 18:20:24,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:24,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809809758] [2024-11-19 18:20:24,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809809758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:24,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:24,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:20:24,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061235540] [2024-11-19 18:20:24,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:24,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:20:24,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:24,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:20:24,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:20:24,584 INFO L87 Difference]: Start difference. First operand 23477 states and 24388 transitions. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:25,781 INFO L93 Difference]: Finished difference Result 49045 states and 50996 transitions. [2024-11-19 18:20:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:20:25,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 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 748 [2024-11-19 18:20:25,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:25,809 INFO L225 Difference]: With dead ends: 49045 [2024-11-19 18:20:25,809 INFO L226 Difference]: Without dead ends: 27367 [2024-11-19 18:20:25,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:20:25,823 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 586 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:25,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 435 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:20:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27367 states. [2024-11-19 18:20:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27367 to 27066. [2024-11-19 18:20:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27066 states, 27065 states have (on average 1.0311841862183633) internal successors, (27909), 27065 states have internal predecessors, (27909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27066 states to 27066 states and 27909 transitions. [2024-11-19 18:20:26,040 INFO L78 Accepts]: Start accepts. Automaton has 27066 states and 27909 transitions. Word has length 748 [2024-11-19 18:20:26,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:26,040 INFO L471 AbstractCegarLoop]: Abstraction has 27066 states and 27909 transitions. [2024-11-19 18:20:26,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:26,040 INFO L276 IsEmpty]: Start isEmpty. Operand 27066 states and 27909 transitions. [2024-11-19 18:20:26,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2024-11-19 18:20:26,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:26,049 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-19 18:20:26,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 18:20:26,050 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:26,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:26,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1871974769, now seen corresponding path program 1 times [2024-11-19 18:20:26,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:26,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707332893] [2024-11-19 18:20:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:26,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 571 proven. 188 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-19 18:20:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:27,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707332893] [2024-11-19 18:20:27,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707332893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:20:27,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620914348] [2024-11-19 18:20:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:27,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:27,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:20:27,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:20:27,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 18:20:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:27,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:20:27,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:20:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 606 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-11-19 18:20:27,611 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:20:27,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620914348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:27,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:20:27,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-19 18:20:27,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013989158] [2024-11-19 18:20:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:27,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:20:27,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:27,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:20:27,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:20:27,613 INFO L87 Difference]: Start difference. First operand 27066 states and 27909 transitions. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:28,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:28,870 INFO L93 Difference]: Finished difference Result 59541 states and 61426 transitions. [2024-11-19 18:20:28,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:20:28,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 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 750 [2024-11-19 18:20:28,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:28,903 INFO L225 Difference]: With dead ends: 59541 [2024-11-19 18:20:28,903 INFO L226 Difference]: Without dead ends: 34274 [2024-11-19 18:20:28,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:20:28,921 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 497 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:28,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 142 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:20:28,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34274 states. [2024-11-19 18:20:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34274 to 32172. [2024-11-19 18:20:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32172 states, 32171 states have (on average 1.0319853284013552) internal successors, (33200), 32171 states have internal predecessors, (33200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32172 states to 32172 states and 33200 transitions. [2024-11-19 18:20:29,226 INFO L78 Accepts]: Start accepts. Automaton has 32172 states and 33200 transitions. Word has length 750 [2024-11-19 18:20:29,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:29,226 INFO L471 AbstractCegarLoop]: Abstraction has 32172 states and 33200 transitions. [2024-11-19 18:20:29,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 32172 states and 33200 transitions. [2024-11-19 18:20:29,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2024-11-19 18:20:29,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:29,237 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:29,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 18:20:29,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:29,438 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:29,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash -184573624, now seen corresponding path program 1 times [2024-11-19 18:20:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:29,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843142398] [2024-11-19 18:20:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:29,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2024-11-19 18:20:29,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:29,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843142398] [2024-11-19 18:20:29,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843142398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:29,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:29,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:29,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115682505] [2024-11-19 18:20:29,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:29,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:29,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:29,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:29,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:29,683 INFO L87 Difference]: Start difference. First operand 32172 states and 33200 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:30,471 INFO L93 Difference]: Finished difference Result 64634 states and 66730 transitions. [2024-11-19 18:20:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:30,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 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 770 [2024-11-19 18:20:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:30,504 INFO L225 Difference]: With dead ends: 64634 [2024-11-19 18:20:30,504 INFO L226 Difference]: Without dead ends: 34261 [2024-11-19 18:20:30,522 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 [2024-11-19 18:20:30,522 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 343 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:30,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 435 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:20:30,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34261 states. [2024-11-19 18:20:30,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34261 to 18642. [2024-11-19 18:20:30,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18642 states, 18641 states have (on average 1.0308459846574756) internal successors, (19216), 18641 states have internal predecessors, (19216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18642 states to 18642 states and 19216 transitions. [2024-11-19 18:20:30,738 INFO L78 Accepts]: Start accepts. Automaton has 18642 states and 19216 transitions. Word has length 770 [2024-11-19 18:20:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:30,738 INFO L471 AbstractCegarLoop]: Abstraction has 18642 states and 19216 transitions. [2024-11-19 18:20:30,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:30,738 INFO L276 IsEmpty]: Start isEmpty. Operand 18642 states and 19216 transitions. [2024-11-19 18:20:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2024-11-19 18:20:30,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:30,748 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:30,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 18:20:30,748 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:30,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:30,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1667368353, now seen corresponding path program 1 times [2024-11-19 18:20:30,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:30,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816796074] [2024-11-19 18:20:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:30,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 643 proven. 188 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-19 18:20:31,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:31,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816796074] [2024-11-19 18:20:31,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816796074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:20:31,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477989361] [2024-11-19 18:20:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:31,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:31,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:20:31,570 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:20:31,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 18:20:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:31,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 18:20:31,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:20:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 700 proven. 133 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-19 18:20:32,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:20:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 682 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-11-19 18:20:33,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477989361] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 18:20:33,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 18:20:33,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 10 [2024-11-19 18:20:33,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252956170] [2024-11-19 18:20:33,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:33,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:20:33,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:20:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 18:20:33,309 INFO L87 Difference]: Start difference. First operand 18642 states and 19216 transitions. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:34,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:34,778 INFO L93 Difference]: Finished difference Result 44170 states and 45537 transitions. [2024-11-19 18:20:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:20:34,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 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 785 [2024-11-19 18:20:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:34,808 INFO L225 Difference]: With dead ends: 44170 [2024-11-19 18:20:34,809 INFO L226 Difference]: Without dead ends: 25530 [2024-11-19 18:20:34,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1572 GetRequests, 1564 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 18:20:34,824 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 469 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:34,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 71 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 18:20:34,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25530 states. [2024-11-19 18:20:35,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25530 to 24321. [2024-11-19 18:20:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24321 states, 24320 states have (on average 1.0263569078947368) internal successors, (24961), 24320 states have internal predecessors, (24961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24321 states to 24321 states and 24961 transitions. [2024-11-19 18:20:35,131 INFO L78 Accepts]: Start accepts. Automaton has 24321 states and 24961 transitions. Word has length 785 [2024-11-19 18:20:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:35,132 INFO L471 AbstractCegarLoop]: Abstraction has 24321 states and 24961 transitions. [2024-11-19 18:20:35,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 24321 states and 24961 transitions. [2024-11-19 18:20:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2024-11-19 18:20:35,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:35,143 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:35,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 18:20:35,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:35,344 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:35,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:35,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1767804039, now seen corresponding path program 1 times [2024-11-19 18:20:35,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:35,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548502865] [2024-11-19 18:20:35,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:35,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 1062 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2024-11-19 18:20:35,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:35,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548502865] [2024-11-19 18:20:35,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548502865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:35,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:35,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:20:35,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433239239] [2024-11-19 18:20:35,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:35,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:20:35,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:35,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:20:35,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:20:35,740 INFO L87 Difference]: Start difference. First operand 24321 states and 24961 transitions. Second operand has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:36,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:36,763 INFO L93 Difference]: Finished difference Result 52532 states and 53921 transitions. [2024-11-19 18:20:36,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:20:36,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 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 829 [2024-11-19 18:20:36,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:36,795 INFO L225 Difference]: With dead ends: 52532 [2024-11-19 18:20:36,795 INFO L226 Difference]: Without dead ends: 28512 [2024-11-19 18:20:36,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:20:36,812 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 530 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:36,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 170 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:20:36,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28512 states. [2024-11-19 18:20:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28512 to 24321. [2024-11-19 18:20:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24321 states, 24320 states have (on average 1.0263569078947368) internal successors, (24961), 24320 states have internal predecessors, (24961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24321 states to 24321 states and 24961 transitions. [2024-11-19 18:20:37,105 INFO L78 Accepts]: Start accepts. Automaton has 24321 states and 24961 transitions. Word has length 829 [2024-11-19 18:20:37,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:37,106 INFO L471 AbstractCegarLoop]: Abstraction has 24321 states and 24961 transitions. [2024-11-19 18:20:37,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 24321 states and 24961 transitions. [2024-11-19 18:20:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2024-11-19 18:20:37,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:37,121 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:37,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 18:20:37,121 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:37,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:37,122 INFO L85 PathProgramCache]: Analyzing trace with hash 563450656, now seen corresponding path program 1 times [2024-11-19 18:20:37,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:37,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802319967] [2024-11-19 18:20:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:37,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1604 backedges. 1178 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2024-11-19 18:20:37,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:37,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802319967] [2024-11-19 18:20:37,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802319967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:37,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:37,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495596707] [2024-11-19 18:20:37,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:37,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:37,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:37,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:37,631 INFO L87 Difference]: Start difference. First operand 24321 states and 24961 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:38,449 INFO L93 Difference]: Finished difference Result 54944 states and 56435 transitions. [2024-11-19 18:20:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:38,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 916 [2024-11-19 18:20:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:38,481 INFO L225 Difference]: With dead ends: 54944 [2024-11-19 18:20:38,481 INFO L226 Difference]: Without dead ends: 30924 [2024-11-19 18:20:38,498 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 [2024-11-19 18:20:38,499 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 225 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:38,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 143 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:20:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30924 states. [2024-11-19 18:20:38,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30924 to 27308. [2024-11-19 18:20:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27308 states, 27307 states have (on average 1.0256710733511554) internal successors, (28008), 27307 states have internal predecessors, (28008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:38,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27308 states to 27308 states and 28008 transitions. [2024-11-19 18:20:38,782 INFO L78 Accepts]: Start accepts. Automaton has 27308 states and 28008 transitions. Word has length 916 [2024-11-19 18:20:38,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:38,783 INFO L471 AbstractCegarLoop]: Abstraction has 27308 states and 28008 transitions. [2024-11-19 18:20:38,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:38,783 INFO L276 IsEmpty]: Start isEmpty. Operand 27308 states and 28008 transitions. [2024-11-19 18:20:38,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2024-11-19 18:20:38,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:38,800 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:38,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 18:20:38,800 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:38,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:38,800 INFO L85 PathProgramCache]: Analyzing trace with hash 167783771, now seen corresponding path program 1 times [2024-11-19 18:20:38,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:38,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620459064] [2024-11-19 18:20:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:38,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1608 backedges. 1090 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-19 18:20:39,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:39,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620459064] [2024-11-19 18:20:39,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620459064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:39,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:39,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:20:39,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731238297] [2024-11-19 18:20:39,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:39,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:20:39,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:20:39,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:20:39,263 INFO L87 Difference]: Start difference. First operand 27308 states and 28008 transitions. Second operand has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:40,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:40,303 INFO L93 Difference]: Finished difference Result 59105 states and 60626 transitions. [2024-11-19 18:20:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:20:40,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 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 956 [2024-11-19 18:20:40,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:40,333 INFO L225 Difference]: With dead ends: 59105 [2024-11-19 18:20:40,333 INFO L226 Difference]: Without dead ends: 32098 [2024-11-19 18:20:40,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:20:40,348 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 759 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:40,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 144 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:20:40,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32098 states. [2024-11-19 18:20:40,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32098 to 27308. [2024-11-19 18:20:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27308 states, 27307 states have (on average 1.0254513494708317) internal successors, (28002), 27307 states have internal predecessors, (28002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27308 states to 27308 states and 28002 transitions. [2024-11-19 18:20:40,609 INFO L78 Accepts]: Start accepts. Automaton has 27308 states and 28002 transitions. Word has length 956 [2024-11-19 18:20:40,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:40,610 INFO L471 AbstractCegarLoop]: Abstraction has 27308 states and 28002 transitions. [2024-11-19 18:20:40,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 27308 states and 28002 transitions. [2024-11-19 18:20:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2024-11-19 18:20:40,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:40,628 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:40,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 18:20:40,629 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:40,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:40,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2100020849, now seen corresponding path program 1 times [2024-11-19 18:20:40,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:40,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566536266] [2024-11-19 18:20:40,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:40,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 1053 proven. 0 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2024-11-19 18:20:41,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:41,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566536266] [2024-11-19 18:20:41,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566536266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:41,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:41,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:20:41,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093784068] [2024-11-19 18:20:41,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:41,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:20:41,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:41,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:20:41,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:20:41,374 INFO L87 Difference]: Start difference. First operand 27308 states and 28002 transitions. Second operand has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:42,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:42,584 INFO L93 Difference]: Finished difference Result 33307 states and 34131 transitions. [2024-11-19 18:20:42,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:20:42,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 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 967 [2024-11-19 18:20:42,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:42,615 INFO L225 Difference]: With dead ends: 33307 [2024-11-19 18:20:42,615 INFO L226 Difference]: Without dead ends: 33305 [2024-11-19 18:20:42,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:20:42,623 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 489 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:42,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 122 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:20:42,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33305 states. [2024-11-19 18:20:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33305 to 25213. [2024-11-19 18:20:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25213 states, 25212 states have (on average 1.025662382992226) internal successors, (25859), 25212 states have internal predecessors, (25859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25213 states to 25213 states and 25859 transitions. [2024-11-19 18:20:42,865 INFO L78 Accepts]: Start accepts. Automaton has 25213 states and 25859 transitions. Word has length 967 [2024-11-19 18:20:42,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:42,866 INFO L471 AbstractCegarLoop]: Abstraction has 25213 states and 25859 transitions. [2024-11-19 18:20:42,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 25213 states and 25859 transitions. [2024-11-19 18:20:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2024-11-19 18:20:42,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:42,882 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:42,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 18:20:42,882 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:42,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash 775437019, now seen corresponding path program 1 times [2024-11-19 18:20:42,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:42,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368290661] [2024-11-19 18:20:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:42,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1629 backedges. 1030 proven. 0 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2024-11-19 18:20:44,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368290661] [2024-11-19 18:20:44,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368290661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:44,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:44,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 18:20:44,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019731102] [2024-11-19 18:20:44,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:44,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 18:20:44,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:44,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 18:20:44,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:20:44,031 INFO L87 Difference]: Start difference. First operand 25213 states and 25859 transitions. Second operand has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:45,524 INFO L93 Difference]: Finished difference Result 60620 states and 62180 transitions. [2024-11-19 18:20:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 18:20:45,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 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 986 [2024-11-19 18:20:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:45,562 INFO L225 Difference]: With dead ends: 60620 [2024-11-19 18:20:45,562 INFO L226 Difference]: Without dead ends: 35708 [2024-11-19 18:20:45,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:20:45,581 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 785 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:45,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 177 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 18:20:45,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35708 states. [2024-11-19 18:20:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35708 to 24911. [2024-11-19 18:20:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24911 states, 24910 states have (on average 1.02517061421116) internal successors, (25537), 24910 states have internal predecessors, (25537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24911 states to 24911 states and 25537 transitions. [2024-11-19 18:20:45,868 INFO L78 Accepts]: Start accepts. Automaton has 24911 states and 25537 transitions. Word has length 986 [2024-11-19 18:20:45,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:45,868 INFO L471 AbstractCegarLoop]: Abstraction has 24911 states and 25537 transitions. [2024-11-19 18:20:45,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:45,868 INFO L276 IsEmpty]: Start isEmpty. Operand 24911 states and 25537 transitions. [2024-11-19 18:20:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2024-11-19 18:20:45,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:45,883 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:20:45,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 18:20:45,884 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:45,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:45,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1160216042, now seen corresponding path program 1 times [2024-11-19 18:20:45,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:45,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210823727] [2024-11-19 18:20:45,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:45,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 883 proven. 0 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2024-11-19 18:20:46,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:46,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210823727] [2024-11-19 18:20:46,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210823727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:46,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:46,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:46,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539771023] [2024-11-19 18:20:46,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:46,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:46,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:46,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:46,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:46,541 INFO L87 Difference]: Start difference. First operand 24911 states and 25537 transitions. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:47,288 INFO L93 Difference]: Finished difference Result 53425 states and 54786 transitions. [2024-11-19 18:20:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:47,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 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 1053 [2024-11-19 18:20:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:47,317 INFO L225 Difference]: With dead ends: 53425 [2024-11-19 18:20:47,317 INFO L226 Difference]: Without dead ends: 28815 [2024-11-19 18:20:47,333 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 [2024-11-19 18:20:47,333 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 176 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:47,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 493 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:20:47,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28815 states. [2024-11-19 18:20:47,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28815 to 27603. [2024-11-19 18:20:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27603 states, 27602 states have (on average 1.023766393739584) internal successors, (28258), 27602 states have internal predecessors, (28258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27603 states to 27603 states and 28258 transitions. [2024-11-19 18:20:47,588 INFO L78 Accepts]: Start accepts. Automaton has 27603 states and 28258 transitions. Word has length 1053 [2024-11-19 18:20:47,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:47,588 INFO L471 AbstractCegarLoop]: Abstraction has 27603 states and 28258 transitions. [2024-11-19 18:20:47,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:47,589 INFO L276 IsEmpty]: Start isEmpty. Operand 27603 states and 28258 transitions. [2024-11-19 18:20:47,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1138 [2024-11-19 18:20:47,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:47,606 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:20:47,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 18:20:47,606 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:47,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:47,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1697872981, now seen corresponding path program 1 times [2024-11-19 18:20:47,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:47,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206418410] [2024-11-19 18:20:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:47,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2454 backedges. 114 proven. 1161 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2024-11-19 18:20:48,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:48,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206418410] [2024-11-19 18:20:48,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206418410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:20:48,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116154298] [2024-11-19 18:20:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:48,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:48,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:20:48,809 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:20:48,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 18:20:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:49,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 18:20:49,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:20:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2454 backedges. 740 proven. 619 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2024-11-19 18:20:53,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:20:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2454 backedges. 114 proven. 1161 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2024-11-19 18:20:56,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116154298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:20:56,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:20:56,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 10 [2024-11-19 18:20:56,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777066121] [2024-11-19 18:20:56,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:20:56,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 18:20:56,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:56,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 18:20:56,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 18:20:56,070 INFO L87 Difference]: Start difference. First operand 27603 states and 28258 transitions. Second operand has 11 states, 11 states have (on average 114.45454545454545) internal successors, (1259), 10 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:59,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:59,984 INFO L93 Difference]: Finished difference Result 69288 states and 70929 transitions. [2024-11-19 18:20:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 18:20:59,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 114.45454545454545) internal successors, (1259), 10 states have internal predecessors, (1259), 0 states have call successors, (0), 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 1137 [2024-11-19 18:20:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:00,028 INFO L225 Difference]: With dead ends: 69288 [2024-11-19 18:21:00,028 INFO L226 Difference]: Without dead ends: 41986 [2024-11-19 18:21:00,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2283 GetRequests, 2267 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2024-11-19 18:21:00,046 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 3030 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4544 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3030 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 5007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 4544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:00,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3030 Valid, 237 Invalid, 5007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 4544 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-19 18:21:00,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41986 states. [2024-11-19 18:21:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41986 to 26709. [2024-11-19 18:21:00,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26709 states, 26708 states have (on average 1.0211921521641456) internal successors, (27274), 26708 states have internal predecessors, (27274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26709 states to 26709 states and 27274 transitions. [2024-11-19 18:21:00,363 INFO L78 Accepts]: Start accepts. Automaton has 26709 states and 27274 transitions. Word has length 1137 [2024-11-19 18:21:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:00,364 INFO L471 AbstractCegarLoop]: Abstraction has 26709 states and 27274 transitions. [2024-11-19 18:21:00,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 114.45454545454545) internal successors, (1259), 10 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 26709 states and 27274 transitions. [2024-11-19 18:21:00,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1495 [2024-11-19 18:21:00,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:00,388 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:21:00,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 18:21:00,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 18:21:00,589 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:00,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1062633769, now seen corresponding path program 1 times [2024-11-19 18:21:00,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:00,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99857802] [2024-11-19 18:21:00,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:00,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4121 backedges. 2203 proven. 0 refuted. 0 times theorem prover too weak. 1918 trivial. 0 not checked. [2024-11-19 18:21:01,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99857802] [2024-11-19 18:21:01,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99857802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:21:01,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:21:01,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:21:01,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552851833] [2024-11-19 18:21:01,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:01,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:21:01,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:01,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:21:01,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:21:01,489 INFO L87 Difference]: Start difference. First operand 26709 states and 27274 transitions. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:02,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:02,315 INFO L93 Difference]: Finished difference Result 55526 states and 56726 transitions. [2024-11-19 18:21:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:21:02,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 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 1494 [2024-11-19 18:21:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:02,349 INFO L225 Difference]: With dead ends: 55526 [2024-11-19 18:21:02,350 INFO L226 Difference]: Without dead ends: 30314 [2024-11-19 18:21:02,368 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 [2024-11-19 18:21:02,368 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 341 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:02,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 129 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:21:02,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30314 states. [2024-11-19 18:21:02,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30314 to 26109. [2024-11-19 18:21:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26109 states, 26108 states have (on average 1.021296154435422) internal successors, (26664), 26108 states have internal predecessors, (26664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26109 states to 26109 states and 26664 transitions. [2024-11-19 18:21:02,630 INFO L78 Accepts]: Start accepts. Automaton has 26109 states and 26664 transitions. Word has length 1494 [2024-11-19 18:21:02,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:02,630 INFO L471 AbstractCegarLoop]: Abstraction has 26109 states and 26664 transitions. [2024-11-19 18:21:02,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 26109 states and 26664 transitions. [2024-11-19 18:21:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1582 [2024-11-19 18:21:02,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:02,657 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:21:02,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 18:21:02,657 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:02,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:02,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1911576264, now seen corresponding path program 1 times [2024-11-19 18:21:02,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:02,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372150293] [2024-11-19 18:21:02,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:02,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4852 backedges. 2630 proven. 41 refuted. 0 times theorem prover too weak. 2181 trivial. 0 not checked. [2024-11-19 18:21:04,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:04,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372150293] [2024-11-19 18:21:04,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372150293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:21:04,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941661667] [2024-11-19 18:21:04,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:04,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:21:04,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:21:04,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:21:04,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 18:21:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:05,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 18:21:05,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:21:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4852 backedges. 1582 proven. 57 refuted. 0 times theorem prover too weak. 3213 trivial. 0 not checked. [2024-11-19 18:21:05,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:21:05,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4852 backedges. 1582 proven. 57 refuted. 0 times theorem prover too weak. 3213 trivial. 0 not checked. [2024-11-19 18:21:05,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941661667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:21:05,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:21:05,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2024-11-19 18:21:05,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357818773] [2024-11-19 18:21:05,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:21:05,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 18:21:05,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:05,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 18:21:05,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 18:21:05,634 INFO L87 Difference]: Start difference. First operand 26109 states and 26664 transitions. Second operand has 10 states, 10 states have (on average 134.8) internal successors, (1348), 10 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)