./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label09.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 3266bb9a560f42e93e7f83a070eaa64f467717133c7f2cf6394974f84eb01d92 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:25:04,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:25:04,208 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:25:04,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:25:04,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:25:04,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:25:04,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:25:04,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:25:04,243 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:25:04,243 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:25:04,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:25:04,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:25:04,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:25:04,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:25:04,245 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:25:04,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:25:04,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:25:04,246 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:25:04,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:25:04,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:25:04,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:25:04,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:25:04,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:25:04,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:25:04,250 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:25:04,251 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:25:04,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:25:04,251 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:25:04,251 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:25:04,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:25:04,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:25:04,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:25:04,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:25:04,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:25:04,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:25:04,253 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:25:04,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:25:04,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:25:04,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:25:04,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:25:04,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:25:04,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:25:04,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3266bb9a560f42e93e7f83a070eaa64f467717133c7f2cf6394974f84eb01d92 [2024-11-09 19:25:04,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:25:04,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:25:04,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:25:04,551 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:25:04,552 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:25:04,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label09.c [2024-11-09 19:25:05,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:25:06,432 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:25:06,432 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label09.c [2024-11-09 19:25:06,463 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c33f17aac/fd7ab9456d9e4cc29305f27f2580ec90/FLAG7f39d596d [2024-11-09 19:25:06,531 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c33f17aac/fd7ab9456d9e4cc29305f27f2580ec90 [2024-11-09 19:25:06,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:25:06,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:25:06,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:25:06,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:25:06,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:25:06,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:25:06" (1/1) ... [2024-11-09 19:25:06,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1784e55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:06, skipping insertion in model container [2024-11-09 19:25:06,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:25:06" (1/1) ... [2024-11-09 19:25:06,639 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:25:06,942 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/Problem12_label09.c[8109,8122] [2024-11-09 19:25:07,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:25:07,617 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:25:07,642 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/Problem12_label09.c[8109,8122] [2024-11-09 19:25:08,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:25:08,046 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:25:08,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08 WrapperNode [2024-11-09 19:25:08,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:25:08,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:25:08,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:25:08,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:25:08,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,430 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-09 19:25:08,430 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:25:08,431 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:25:08,431 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:25:08,431 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:25:08,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,487 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,663 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]. [2024-11-09 19:25:08,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,765 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,819 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:25:08,862 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:25:08,862 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:25:08,863 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:25:08,863 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (1/1) ... [2024-11-09 19:25:08,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:25:08,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:25:08,896 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) [2024-11-09 19:25:08,898 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 [2024-11-09 19:25:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:25:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:25:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:25:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:25:09,082 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:25:09,086 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:25:14,623 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:25:14,623 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-09 19:25:14,625 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:25:14,952 INFO L? ?]: Removed 2039 outVars from TransFormulas that were not future-live. [2024-11-09 19:25:14,953 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:25:14,989 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:25:14,989 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:25:14,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:25:14 BoogieIcfgContainer [2024-11-09 19:25:14,990 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:25:14,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:25:14,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:25:14,996 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:25:14,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:25:06" (1/3) ... [2024-11-09 19:25:14,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd17264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:25:14, skipping insertion in model container [2024-11-09 19:25:14,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:25:08" (2/3) ... [2024-11-09 19:25:14,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd17264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:25:14, skipping insertion in model container [2024-11-09 19:25:14,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:25:14" (3/3) ... [2024-11-09 19:25:15,001 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label09.c [2024-11-09 19:25:15,018 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:25:15,019 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:25:15,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:25:15,135 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;@77b9b469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:25:15,136 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:25:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:15,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 19:25:15,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:15,158 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:25:15,159 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:15,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:15,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1563951262, now seen corresponding path program 1 times [2024-11-09 19:25:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:15,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977771039] [2024-11-09 19:25:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:15,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:25:15,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:15,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977771039] [2024-11-09 19:25:15,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977771039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:15,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:15,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:15,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391773112] [2024-11-09 19:25:15,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:15,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:25:15,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:15,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:25:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:25:15,861 INFO L87 Difference]: Start difference. First operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:23,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:23,726 INFO L93 Difference]: Finished difference Result 3150 states and 8858 transitions. [2024-11-09 19:25:23,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:25:23,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-11-09 19:25:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:23,764 INFO L225 Difference]: With dead ends: 3150 [2024-11-09 19:25:23,764 INFO L226 Difference]: Without dead ends: 2261 [2024-11-09 19:25:23,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:25:23,773 INFO L432 NwaCegarLoop]: 757 mSDtfsCounter, 4239 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8031 mSolverCounterSat, 1364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4239 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 9395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1364 IncrementalHoareTripleChecker+Valid, 8031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:23,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4239 Valid, 789 Invalid, 9395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1364 Valid, 8031 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-09 19:25:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2024-11-09 19:25:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2024-11-09 19:25:23,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 2.4154867256637167) internal successors, (5459), 2260 states have internal predecessors, (5459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 5459 transitions. [2024-11-09 19:25:23,903 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 5459 transitions. Word has length 68 [2024-11-09 19:25:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:23,904 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 5459 transitions. [2024-11-09 19:25:23,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:23,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 5459 transitions. [2024-11-09 19:25:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-09 19:25:23,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:23,909 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:25:23,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:25:23,910 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:23,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:23,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1812282780, now seen corresponding path program 1 times [2024-11-09 19:25:23,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:23,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980692565] [2024-11-09 19:25:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:23,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:25:24,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980692565] [2024-11-09 19:25:24,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980692565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:24,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:24,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:24,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237763411] [2024-11-09 19:25:24,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:24,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:25:24,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:24,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:25:24,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:25:24,333 INFO L87 Difference]: Start difference. First operand 2261 states and 5459 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:30,073 INFO L93 Difference]: Finished difference Result 6062 states and 14971 transitions. [2024-11-09 19:25:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:25:30,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-11-09 19:25:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:30,090 INFO L225 Difference]: With dead ends: 6062 [2024-11-09 19:25:30,090 INFO L226 Difference]: Without dead ends: 3765 [2024-11-09 19:25:30,095 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 [2024-11-09 19:25:30,097 INFO L432 NwaCegarLoop]: 696 mSDtfsCounter, 1368 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5844 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 6508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 5844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:30,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 718 Invalid, 6508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 5844 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-09 19:25:30,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2024-11-09 19:25:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3765. [2024-11-09 19:25:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3764 states have (on average 2.233262486716259) internal successors, (8406), 3764 states have internal predecessors, (8406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:30,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 8406 transitions. [2024-11-09 19:25:30,181 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 8406 transitions. Word has length 140 [2024-11-09 19:25:30,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:30,183 INFO L471 AbstractCegarLoop]: Abstraction has 3765 states and 8406 transitions. [2024-11-09 19:25:30,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:30,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 8406 transitions. [2024-11-09 19:25:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-09 19:25:30,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:30,196 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:25:30,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:25:30,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:30,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:30,198 INFO L85 PathProgramCache]: Analyzing trace with hash 94401672, now seen corresponding path program 1 times [2024-11-09 19:25:30,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:30,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578550473] [2024-11-09 19:25:30,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:30,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:25:30,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:30,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578550473] [2024-11-09 19:25:30,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578550473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:30,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:30,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607233679] [2024-11-09 19:25:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:30,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:25:30,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:30,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:25:30,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:25:30,780 INFO L87 Difference]: Start difference. First operand 3765 states and 8406 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:35,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:35,133 INFO L93 Difference]: Finished difference Result 9073 states and 20800 transitions. [2024-11-09 19:25:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:25:35,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 282 [2024-11-09 19:25:35,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:35,155 INFO L225 Difference]: With dead ends: 9073 [2024-11-09 19:25:35,157 INFO L226 Difference]: Without dead ends: 5272 [2024-11-09 19:25:35,161 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 [2024-11-09 19:25:35,162 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 1531 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 5448 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 6001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 5448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:35,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 331 Invalid, 6001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 5448 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 19:25:35,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5272 states. [2024-11-09 19:25:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5272 to 5269. [2024-11-09 19:25:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5269 states, 5268 states have (on average 2.2272209567198176) internal successors, (11733), 5268 states have internal predecessors, (11733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 11733 transitions. [2024-11-09 19:25:35,264 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 11733 transitions. Word has length 282 [2024-11-09 19:25:35,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:35,267 INFO L471 AbstractCegarLoop]: Abstraction has 5269 states and 11733 transitions. [2024-11-09 19:25:35,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:35,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 11733 transitions. [2024-11-09 19:25:35,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-09 19:25:35,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:35,273 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:25:35,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:25:35,273 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:35,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:35,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1666957538, now seen corresponding path program 1 times [2024-11-09 19:25:35,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:35,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125918280] [2024-11-09 19:25:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:35,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:25:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125918280] [2024-11-09 19:25:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125918280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:35,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:35,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471320970] [2024-11-09 19:25:35,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:35,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:35,503 INFO L87 Difference]: Start difference. First operand 5269 states and 11733 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:39,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:39,145 INFO L93 Difference]: Finished difference Result 15048 states and 33756 transitions. [2024-11-09 19:25:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:39,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 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 296 [2024-11-09 19:25:39,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:39,182 INFO L225 Difference]: With dead ends: 15048 [2024-11-09 19:25:39,182 INFO L226 Difference]: Without dead ends: 9781 [2024-11-09 19:25:39,190 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 [2024-11-09 19:25:39,191 INFO L432 NwaCegarLoop]: 1936 mSDtfsCounter, 1355 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3990 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 4378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 3990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:39,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 1946 Invalid, 4378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 3990 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:25:39,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9781 states. [2024-11-09 19:25:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9781 to 9781. [2024-11-09 19:25:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9781 states, 9780 states have (on average 2.200920245398773) internal successors, (21525), 9780 states have internal predecessors, (21525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:39,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 21525 transitions. [2024-11-09 19:25:39,392 INFO L78 Accepts]: Start accepts. Automaton has 9781 states and 21525 transitions. Word has length 296 [2024-11-09 19:25:39,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:39,393 INFO L471 AbstractCegarLoop]: Abstraction has 9781 states and 21525 transitions. [2024-11-09 19:25:39,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 9781 states and 21525 transitions. [2024-11-09 19:25:39,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-09 19:25:39,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:39,399 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:25:39,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:25:39,400 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:39,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:39,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1331360622, now seen corresponding path program 1 times [2024-11-09 19:25:39,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:39,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644678427] [2024-11-09 19:25:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:39,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 19:25:39,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:39,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644678427] [2024-11-09 19:25:39,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644678427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:39,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:39,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:39,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749197992] [2024-11-09 19:25:39,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:39,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:39,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:39,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:39,681 INFO L87 Difference]: Start difference. First operand 9781 states and 21525 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:43,761 INFO L93 Difference]: Finished difference Result 24072 states and 53340 transitions. [2024-11-09 19:25:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:43,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 300 [2024-11-09 19:25:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:43,798 INFO L225 Difference]: With dead ends: 24072 [2024-11-09 19:25:43,799 INFO L226 Difference]: Without dead ends: 14293 [2024-11-09 19:25:43,812 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 [2024-11-09 19:25:43,813 INFO L432 NwaCegarLoop]: 1974 mSDtfsCounter, 1360 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3815 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 4313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 3815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:43,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 1984 Invalid, 4313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 3815 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:25:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14293 states. [2024-11-09 19:25:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14293 to 14293. [2024-11-09 19:25:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14293 states, 14292 states have (on average 2.1889168765743072) internal successors, (31284), 14292 states have internal predecessors, (31284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14293 states to 14293 states and 31284 transitions. [2024-11-09 19:25:44,062 INFO L78 Accepts]: Start accepts. Automaton has 14293 states and 31284 transitions. Word has length 300 [2024-11-09 19:25:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:44,064 INFO L471 AbstractCegarLoop]: Abstraction has 14293 states and 31284 transitions. [2024-11-09 19:25:44,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:44,065 INFO L276 IsEmpty]: Start isEmpty. Operand 14293 states and 31284 transitions. [2024-11-09 19:25:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-09 19:25:44,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:44,070 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:25:44,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:25:44,070 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:44,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1440467126, now seen corresponding path program 1 times [2024-11-09 19:25:44,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:44,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814391262] [2024-11-09 19:25:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:44,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 171 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:25:44,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:44,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814391262] [2024-11-09 19:25:44,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814391262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:25:44,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662242064] [2024-11-09 19:25:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:44,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:25:44,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:25:44,532 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) [2024-11-09 19:25:44,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:25:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:44,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:25:44,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:25:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-09 19:25:45,074 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:25:45,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662242064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:45,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:25:45,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 19:25:45,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516587205] [2024-11-09 19:25:45,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:45,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:45,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:45,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:25:45,080 INFO L87 Difference]: Start difference. First operand 14293 states and 31284 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:48,661 INFO L93 Difference]: Finished difference Result 38360 states and 84926 transitions. [2024-11-09 19:25:48,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:48,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 324 [2024-11-09 19:25:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:48,710 INFO L225 Difference]: With dead ends: 38360 [2024-11-09 19:25:48,710 INFO L226 Difference]: Without dead ends: 24069 [2024-11-09 19:25:48,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:25:48,726 INFO L432 NwaCegarLoop]: 554 mSDtfsCounter, 1311 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3364 mSolverCounterSat, 802 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 4166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 802 IncrementalHoareTripleChecker+Valid, 3364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:48,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 561 Invalid, 4166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [802 Valid, 3364 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:25:48,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24069 states. [2024-11-09 19:25:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24069 to 21813. [2024-11-09 19:25:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21813 states, 21812 states have (on average 2.1349257289565378) internal successors, (46567), 21812 states have internal predecessors, (46567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21813 states to 21813 states and 46567 transitions. [2024-11-09 19:25:49,051 INFO L78 Accepts]: Start accepts. Automaton has 21813 states and 46567 transitions. Word has length 324 [2024-11-09 19:25:49,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:49,051 INFO L471 AbstractCegarLoop]: Abstraction has 21813 states and 46567 transitions. [2024-11-09 19:25:49,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:49,052 INFO L276 IsEmpty]: Start isEmpty. Operand 21813 states and 46567 transitions. [2024-11-09 19:25:49,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-09 19:25:49,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:49,058 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:25:49,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:25:49,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 19:25:49,263 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:49,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:49,263 INFO L85 PathProgramCache]: Analyzing trace with hash -615577428, now seen corresponding path program 1 times [2024-11-09 19:25:49,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:49,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249404020] [2024-11-09 19:25:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:49,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-09 19:25:49,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:49,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249404020] [2024-11-09 19:25:49,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249404020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:49,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:49,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:49,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67832215] [2024-11-09 19:25:49,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:49,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:49,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:49,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:49,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:49,475 INFO L87 Difference]: Start difference. First operand 21813 states and 46567 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:52,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:52,866 INFO L93 Difference]: Finished difference Result 43624 states and 93132 transitions. [2024-11-09 19:25:52,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:52,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2024-11-09 19:25:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:52,906 INFO L225 Difference]: With dead ends: 43624 [2024-11-09 19:25:52,907 INFO L226 Difference]: Without dead ends: 21813 [2024-11-09 19:25:52,927 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 [2024-11-09 19:25:52,928 INFO L432 NwaCegarLoop]: 1659 mSDtfsCounter, 1441 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3650 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 4042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 3650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:52,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 1669 Invalid, 4042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 3650 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 19:25:52,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21813 states. [2024-11-09 19:25:53,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21813 to 21813. [2024-11-09 19:25:53,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21813 states, 21812 states have (on average 2.08999633229415) internal successors, (45587), 21812 states have internal predecessors, (45587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21813 states to 21813 states and 45587 transitions. [2024-11-09 19:25:53,216 INFO L78 Accepts]: Start accepts. Automaton has 21813 states and 45587 transitions. Word has length 347 [2024-11-09 19:25:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:53,217 INFO L471 AbstractCegarLoop]: Abstraction has 21813 states and 45587 transitions. [2024-11-09 19:25:53,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:53,217 INFO L276 IsEmpty]: Start isEmpty. Operand 21813 states and 45587 transitions. [2024-11-09 19:25:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-09 19:25:53,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:53,227 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:25:53,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:25:53,227 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:53,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash 406663484, now seen corresponding path program 1 times [2024-11-09 19:25:53,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:53,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438773294] [2024-11-09 19:25:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:53,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:53,459 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-09 19:25:53,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:53,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438773294] [2024-11-09 19:25:53,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438773294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:53,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:25:53,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:25:53,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938743913] [2024-11-09 19:25:53,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:53,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:53,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:25:53,463 INFO L87 Difference]: Start difference. First operand 21813 states and 45587 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:57,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:25:57,159 INFO L93 Difference]: Finished difference Result 43624 states and 91172 transitions. [2024-11-09 19:25:57,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:25:57,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 400 [2024-11-09 19:25:57,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:25:57,201 INFO L225 Difference]: With dead ends: 43624 [2024-11-09 19:25:57,201 INFO L226 Difference]: Without dead ends: 21813 [2024-11-09 19:25:57,221 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 [2024-11-09 19:25:57,222 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 1365 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3726 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 4274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 3726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:25:57,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 133 Invalid, 4274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 3726 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:25:57,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21813 states. [2024-11-09 19:25:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21813 to 21813. [2024-11-09 19:25:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21813 states, 21812 states have (on average 2.082248303686044) internal successors, (45418), 21812 states have internal predecessors, (45418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21813 states to 21813 states and 45418 transitions. [2024-11-09 19:25:57,512 INFO L78 Accepts]: Start accepts. Automaton has 21813 states and 45418 transitions. Word has length 400 [2024-11-09 19:25:57,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:25:57,513 INFO L471 AbstractCegarLoop]: Abstraction has 21813 states and 45418 transitions. [2024-11-09 19:25:57,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:25:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 21813 states and 45418 transitions. [2024-11-09 19:25:57,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-09 19:25:57,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:25:57,522 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-09 19:25:57,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:25:57,523 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:25:57,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:25:57,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1855094562, now seen corresponding path program 1 times [2024-11-09 19:25:57,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:25:57,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300063989] [2024-11-09 19:25:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:57,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:25:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 236 proven. 195 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-09 19:25:58,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:25:58,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300063989] [2024-11-09 19:25:58,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300063989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:25:58,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514390910] [2024-11-09 19:25:58,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:25:58,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:25:58,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:25:58,019 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) [2024-11-09 19:25:58,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:25:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:25:58,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:25:58,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:25:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 19:25:58,375 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:25:58,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514390910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:25:58,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:25:58,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 19:25:58,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847493945] [2024-11-09 19:25:58,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:25:58,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:25:58,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:25:58,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:25:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:25:58,378 INFO L87 Difference]: Start difference. First operand 21813 states and 45418 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:02,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:02,274 INFO L93 Difference]: Finished difference Result 59416 states and 124473 transitions. [2024-11-09 19:26:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:02,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 410 [2024-11-09 19:26:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:02,328 INFO L225 Difference]: With dead ends: 59416 [2024-11-09 19:26:02,328 INFO L226 Difference]: Without dead ends: 37605 [2024-11-09 19:26:02,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:26:02,341 INFO L432 NwaCegarLoop]: 1683 mSDtfsCounter, 1374 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3655 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 4358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 3655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:02,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 1691 Invalid, 4358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 3655 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 19:26:02,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37605 states. [2024-11-09 19:26:02,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37605 to 37605. [2024-11-09 19:26:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37605 states, 37604 states have (on average 2.092038081055207) internal successors, (78669), 37604 states have internal predecessors, (78669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37605 states to 37605 states and 78669 transitions. [2024-11-09 19:26:02,798 INFO L78 Accepts]: Start accepts. Automaton has 37605 states and 78669 transitions. Word has length 410 [2024-11-09 19:26:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:02,799 INFO L471 AbstractCegarLoop]: Abstraction has 37605 states and 78669 transitions. [2024-11-09 19:26:02,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 37605 states and 78669 transitions. [2024-11-09 19:26:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-09 19:26:02,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:02,814 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:02,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:26:03,018 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 [2024-11-09 19:26:03,019 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:03,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:03,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1198500484, now seen corresponding path program 1 times [2024-11-09 19:26:03,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:03,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548164954] [2024-11-09 19:26:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:03,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 19:26:03,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548164954] [2024-11-09 19:26:03,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548164954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:03,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:03,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:26:03,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327506091] [2024-11-09 19:26:03,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:03,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:03,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:03,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:03,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:03,482 INFO L87 Difference]: Start difference. First operand 37605 states and 78669 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:07,410 INFO L93 Difference]: Finished difference Result 102280 states and 214395 transitions. [2024-11-09 19:26:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:07,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 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 514 [2024-11-09 19:26:07,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:07,492 INFO L225 Difference]: With dead ends: 102280 [2024-11-09 19:26:07,492 INFO L226 Difference]: Without dead ends: 64677 [2024-11-09 19:26:07,529 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 [2024-11-09 19:26:07,529 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 1422 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3552 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 4256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 3552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:07,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 337 Invalid, 4256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 3552 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:26:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64677 states. [2024-11-09 19:26:08,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64677 to 63173. [2024-11-09 19:26:08,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63173 states, 63172 states have (on average 2.0611188501234725) internal successors, (130205), 63172 states have internal predecessors, (130205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63173 states to 63173 states and 130205 transitions. [2024-11-09 19:26:08,696 INFO L78 Accepts]: Start accepts. Automaton has 63173 states and 130205 transitions. Word has length 514 [2024-11-09 19:26:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:08,697 INFO L471 AbstractCegarLoop]: Abstraction has 63173 states and 130205 transitions. [2024-11-09 19:26:08,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 63173 states and 130205 transitions. [2024-11-09 19:26:08,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2024-11-09 19:26:08,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:08,719 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 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] [2024-11-09 19:26:08,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:26:08,720 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:08,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:08,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2144125212, now seen corresponding path program 1 times [2024-11-09 19:26:08,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:08,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012473960] [2024-11-09 19:26:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:08,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-09 19:26:09,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:09,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012473960] [2024-11-09 19:26:09,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012473960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:09,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:09,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:26:09,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443147268] [2024-11-09 19:26:09,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:09,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:09,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:09,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:09,489 INFO L87 Difference]: Start difference. First operand 63173 states and 130205 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:13,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:13,662 INFO L93 Difference]: Finished difference Result 156424 states and 321308 transitions. [2024-11-09 19:26:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:13,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 546 [2024-11-09 19:26:13,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:13,795 INFO L225 Difference]: With dead ends: 156424 [2024-11-09 19:26:13,795 INFO L226 Difference]: Without dead ends: 87989 [2024-11-09 19:26:13,818 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 [2024-11-09 19:26:13,819 INFO L432 NwaCegarLoop]: 2005 mSDtfsCounter, 1312 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3584 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 3996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:13,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 2015 Invalid, 3996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 3584 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:26:13,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87989 states. [2024-11-09 19:26:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87989 to 81973. [2024-11-09 19:26:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81973 states, 81972 states have (on average 2.0360610940321084) internal successors, (166900), 81972 states have internal predecessors, (166900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81973 states to 81973 states and 166900 transitions. [2024-11-09 19:26:15,204 INFO L78 Accepts]: Start accepts. Automaton has 81973 states and 166900 transitions. Word has length 546 [2024-11-09 19:26:15,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:15,204 INFO L471 AbstractCegarLoop]: Abstraction has 81973 states and 166900 transitions. [2024-11-09 19:26:15,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 81973 states and 166900 transitions. [2024-11-09 19:26:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-11-09 19:26:15,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:15,467 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:26:15,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:26:15,468 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:15,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash 174895444, now seen corresponding path program 1 times [2024-11-09 19:26:15,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:15,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48482453] [2024-11-09 19:26:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:15,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 730 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-09 19:26:16,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:16,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48482453] [2024-11-09 19:26:16,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48482453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:16,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:16,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:26:16,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654442657] [2024-11-09 19:26:16,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:16,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:16,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:16,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:16,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:16,051 INFO L87 Difference]: Start difference. First operand 81973 states and 166900 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:20,189 INFO L93 Difference]: Finished difference Result 196280 states and 400801 transitions. [2024-11-09 19:26:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:20,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 570 [2024-11-09 19:26:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:20,700 INFO L225 Difference]: With dead ends: 196280 [2024-11-09 19:26:20,700 INFO L226 Difference]: Without dead ends: 115061 [2024-11-09 19:26:20,770 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 [2024-11-09 19:26:20,772 INFO L432 NwaCegarLoop]: 1967 mSDtfsCounter, 1285 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3675 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 3974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 3675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:20,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1977 Invalid, 3974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 3675 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:26:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115061 states.