./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem15_label23.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/Problem15_label23.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 f53d8519ad34447b5f7820ee5fb550dc2c21fa5407dc5752182b7255b8652435 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:41:40,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:41:40,729 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:41:40,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:41:40,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:41:40,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:41:40,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:41:40,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:41:40,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:41:40,774 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:41:40,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:41:40,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:41:40,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:41:40,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:41:40,778 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:41:40,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:41:40,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:41:40,779 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:41:40,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:41:40,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:41:40,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:41:40,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:41:40,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:41:40,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:41:40,785 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:41:40,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:41:40,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:41:40,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:41:40,786 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:41:40,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:41:40,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:41:40,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:41:40,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:41:40,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:41:40,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:41:40,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:41:40,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:41:40,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:41:40,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:41:40,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:41:40,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:41:40,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:41:40,792 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f53d8519ad34447b5f7820ee5fb550dc2c21fa5407dc5752182b7255b8652435 [2024-11-09 19:41:41,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:41:41,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:41:41,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:41:41,068 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:41:41,068 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:41:41,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem15_label23.c [2024-11-09 19:41:42,537 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:41:42,893 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:41:42,893 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label23.c [2024-11-09 19:41:42,917 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98ed43fc5/0b83dcb16b5e47e2b4209f57f4d26150/FLAGdc7fc8929 [2024-11-09 19:41:42,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98ed43fc5/0b83dcb16b5e47e2b4209f57f4d26150 [2024-11-09 19:41:42,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:41:42,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:41:42,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:41:42,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:41:42,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:41:42,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:41:42" (1/1) ... [2024-11-09 19:41:42,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a15edd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:42, skipping insertion in model container [2024-11-09 19:41:42,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:41:42" (1/1) ... [2024-11-09 19:41:43,015 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:41:43,222 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label23.c[2237,2250] [2024-11-09 19:41:43,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:41:43,617 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:41:43,632 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label23.c[2237,2250] [2024-11-09 19:41:43,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:41:43,915 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:41:43,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43 WrapperNode [2024-11-09 19:41:43,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:41:43,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:41:43,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:41:43,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:41:43,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:43,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:44,142 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1759 [2024-11-09 19:41:44,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:41:44,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:41:44,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:41:44,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:41:44,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:44,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:44,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:44,236 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 19:41:44,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:44,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:44,350 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:44,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:44,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:44,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:44,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:41:44,402 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:41:44,402 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:41:44,402 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:41:44,403 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (1/1) ... [2024-11-09 19:41:44,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:41:44,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:41:44,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:41:44,443 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 19:41:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:41:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:41:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:41:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:41:44,549 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:41:44,552 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:41:47,367 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1665: havoc calculate_output_#t~ret7#1; [2024-11-09 19:41:47,488 INFO L? ?]: Removed 697 outVars from TransFormulas that were not future-live. [2024-11-09 19:41:47,488 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:41:47,521 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:41:47,521 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:41:47,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:41:47 BoogieIcfgContainer [2024-11-09 19:41:47,521 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:41:47,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:41:47,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:41:47,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:41:47,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:41:42" (1/3) ... [2024-11-09 19:41:47,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed08ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:41:47, skipping insertion in model container [2024-11-09 19:41:47,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:43" (2/3) ... [2024-11-09 19:41:47,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed08ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:41:47, skipping insertion in model container [2024-11-09 19:41:47,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:41:47" (3/3) ... [2024-11-09 19:41:47,533 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label23.c [2024-11-09 19:41:47,548 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:41:47,548 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:41:47,632 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:41:47,639 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;@20a6573, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:41:47,639 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:41:47,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 427 states, 425 states have (on average 2.3176470588235296) internal successors, (985), 426 states have internal predecessors, (985), 0 states have call successors, (0), 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 19:41:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 19:41:47,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:41:47,652 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:41:47,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:41:47,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:41:47,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1790861358, now seen corresponding path program 1 times [2024-11-09 19:41:47,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:41:47,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559421252] [2024-11-09 19:41:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:41:47,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:41:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:41:47,925 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 19:41:47,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:41:47,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559421252] [2024-11-09 19:41:47,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559421252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:41:47,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:41:47,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:41:47,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161663713] [2024-11-09 19:41:47,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:41:47,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:41:47,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:41:47,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:41:47,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:41:47,963 INFO L87 Difference]: Start difference. First operand has 427 states, 425 states have (on average 2.3176470588235296) internal successors, (985), 426 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19:41:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:41:50,673 INFO L93 Difference]: Finished difference Result 1160 states and 2808 transitions. [2024-11-09 19:41:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:41:50,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-09 19:41:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:41:50,691 INFO L225 Difference]: With dead ends: 1160 [2024-11-09 19:41:50,691 INFO L226 Difference]: Without dead ends: 668 [2024-11-09 19:41:50,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:41:50,699 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 536 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:41:50,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 388 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 19:41:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-09 19:41:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 666. [2024-11-09 19:41:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 2.177443609022556) internal successors, (1448), 665 states have internal predecessors, (1448), 0 states have call successors, (0), 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 19:41:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1448 transitions. [2024-11-09 19:41:50,793 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1448 transitions. Word has length 19 [2024-11-09 19:41:50,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:41:50,793 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1448 transitions. [2024-11-09 19:41:50,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19:41:50,794 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1448 transitions. [2024-11-09 19:41:50,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 19:41:50,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:41:50,796 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:41:50,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:41:50,797 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:41:50,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:41:50,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1789737253, now seen corresponding path program 1 times [2024-11-09 19:41:50,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:41:50,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71186928] [2024-11-09 19:41:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:41:50,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:41:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:41:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:41:51,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:41:51,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71186928] [2024-11-09 19:41:51,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71186928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:41:51,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:41:51,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:41:51,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889635807] [2024-11-09 19:41:51,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:41:51,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:41:51,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:41:51,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:41:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:41:51,198 INFO L87 Difference]: Start difference. First operand 666 states and 1448 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 19:41:52,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:41:52,837 INFO L93 Difference]: Finished difference Result 1631 states and 3482 transitions. [2024-11-09 19:41:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:41:52,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-11-09 19:41:52,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:41:52,842 INFO L225 Difference]: With dead ends: 1631 [2024-11-09 19:41:52,842 INFO L226 Difference]: Without dead ends: 967 [2024-11-09 19:41:52,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:41:52,846 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 469 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:41:52,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 341 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:41:52,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2024-11-09 19:41:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 967. [2024-11-09 19:41:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 966 states have (on average 2.0817805383022776) internal successors, (2011), 966 states have internal predecessors, (2011), 0 states have call successors, (0), 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 19:41:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 2011 transitions. [2024-11-09 19:41:52,872 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 2011 transitions. Word has length 85 [2024-11-09 19:41:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:41:52,873 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 2011 transitions. [2024-11-09 19:41:52,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 19:41:52,873 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 2011 transitions. [2024-11-09 19:41:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-09 19:41:52,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:41:52,877 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:41:52,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:41:52,878 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:41:52,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:41:52,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1337188352, now seen corresponding path program 1 times [2024-11-09 19:41:52,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:41:52,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378953926] [2024-11-09 19:41:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:41:52,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:41:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:41:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:41:53,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:41:53,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378953926] [2024-11-09 19:41:53,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378953926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:41:53,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:41:53,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:41:53,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071841017] [2024-11-09 19:41:53,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:41:53,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:41:53,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:41:53,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:41:53,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:41:53,153 INFO L87 Difference]: Start difference. First operand 967 states and 2011 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 19:41:55,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:41:55,250 INFO L93 Difference]: Finished difference Result 2238 states and 4819 transitions. [2024-11-09 19:41:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:41:55,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2024-11-09 19:41:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:41:55,259 INFO L225 Difference]: With dead ends: 2238 [2024-11-09 19:41:55,260 INFO L226 Difference]: Without dead ends: 1573 [2024-11-09 19:41:55,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:41:55,263 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 488 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:41:55,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 322 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:41:55,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2024-11-09 19:41:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1271. [2024-11-09 19:41:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1270 states have (on average 2.0338582677165356) internal successors, (2583), 1270 states have internal predecessors, (2583), 0 states have call successors, (0), 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 19:41:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 2583 transitions. [2024-11-09 19:41:55,293 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 2583 transitions. Word has length 90 [2024-11-09 19:41:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:41:55,294 INFO L471 AbstractCegarLoop]: Abstraction has 1271 states and 2583 transitions. [2024-11-09 19:41:55,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 19:41:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 2583 transitions. [2024-11-09 19:41:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-09 19:41:55,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:41:55,302 INFO L215 NwaCegarLoop]: trace histogram [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, 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 19:41:55,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:41:55,303 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:41:55,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:41:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1282020635, now seen corresponding path program 1 times [2024-11-09 19:41:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:41:55,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297938969] [2024-11-09 19:41:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:41:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:41:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:41:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-09 19:41:55,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:41:55,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297938969] [2024-11-09 19:41:55,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297938969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:41:55,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:41:55,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:41:55,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341288214] [2024-11-09 19:41:55,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:41:55,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:41:55,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:41:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:41:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:41:55,568 INFO L87 Difference]: Start difference. First operand 1271 states and 2583 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 19:41:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:41:57,160 INFO L93 Difference]: Finished difference Result 3450 states and 7116 transitions. [2024-11-09 19:41:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:41:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 187 [2024-11-09 19:41:57,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:41:57,170 INFO L225 Difference]: With dead ends: 3450 [2024-11-09 19:41:57,170 INFO L226 Difference]: Without dead ends: 2181 [2024-11-09 19:41:57,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:41:57,173 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 490 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:41:57,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 344 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:41:57,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2024-11-09 19:41:57,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2176. [2024-11-09 19:41:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 2175 states have (on average 1.9802298850574713) internal successors, (4307), 2175 states have internal predecessors, (4307), 0 states have call successors, (0), 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 19:41:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 4307 transitions. [2024-11-09 19:41:57,215 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 4307 transitions. Word has length 187 [2024-11-09 19:41:57,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:41:57,217 INFO L471 AbstractCegarLoop]: Abstraction has 2176 states and 4307 transitions. [2024-11-09 19:41:57,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 19:41:57,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 4307 transitions. [2024-11-09 19:41:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-09 19:41:57,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:41:57,226 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:57,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:41:57,227 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:41:57,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:41:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1277189247, now seen corresponding path program 1 times [2024-11-09 19:41:57,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:41:57,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443091729] [2024-11-09 19:41:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:41:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:41:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:41:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 19:41:57,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:41:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443091729] [2024-11-09 19:41:57,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443091729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:41:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:41:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:41:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095326654] [2024-11-09 19:41:57,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:41:57,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:41:57,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:41:57,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:41:57,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:41:57,876 INFO L87 Difference]: Start difference. First operand 2176 states and 4307 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 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 19:41:59,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:41:59,423 INFO L93 Difference]: Finished difference Result 4650 states and 9156 transitions. [2024-11-09 19:41:59,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:41:59,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 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 293 [2024-11-09 19:41:59,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:41:59,434 INFO L225 Difference]: With dead ends: 4650 [2024-11-09 19:41:59,435 INFO L226 Difference]: Without dead ends: 2476 [2024-11-09 19:41:59,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:41:59,440 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 337 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:41:59,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 363 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:41:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2024-11-09 19:41:59,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2476. [2024-11-09 19:41:59,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2475 states have (on average 1.9575757575757575) internal successors, (4845), 2475 states have internal predecessors, (4845), 0 states have call successors, (0), 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 19:41:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4845 transitions. [2024-11-09 19:41:59,482 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4845 transitions. Word has length 293 [2024-11-09 19:41:59,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:41:59,483 INFO L471 AbstractCegarLoop]: Abstraction has 2476 states and 4845 transitions. [2024-11-09 19:41:59,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 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 19:41:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4845 transitions. [2024-11-09 19:41:59,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-09 19:41:59,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:41:59,488 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:59,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:41:59,489 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:41:59,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:41:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash 545850340, now seen corresponding path program 1 times [2024-11-09 19:41:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:41:59,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57219590] [2024-11-09 19:41:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:41:59,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:41:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:41:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-09 19:41:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:41:59,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57219590] [2024-11-09 19:41:59,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57219590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:41:59,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:41:59,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:41:59,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950030174] [2024-11-09 19:41:59,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:41:59,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:41:59,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:41:59,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:41:59,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:41:59,735 INFO L87 Difference]: Start difference. First operand 2476 states and 4845 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 19:42:01,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:01,910 INFO L93 Difference]: Finished difference Result 5251 states and 10505 transitions. [2024-11-09 19:42:01,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:01,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 308 [2024-11-09 19:42:01,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:01,926 INFO L225 Difference]: With dead ends: 5251 [2024-11-09 19:42:01,927 INFO L226 Difference]: Without dead ends: 3077 [2024-11-09 19:42:01,930 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 19:42:01,932 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 530 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:01,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 327 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:42:01,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2024-11-09 19:42:01,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 2173. [2024-11-09 19:42:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2172 states have (on average 1.977900552486188) internal successors, (4296), 2172 states have internal predecessors, (4296), 0 states have call successors, (0), 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 19:42:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 4296 transitions. [2024-11-09 19:42:01,989 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 4296 transitions. Word has length 308 [2024-11-09 19:42:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:01,990 INFO L471 AbstractCegarLoop]: Abstraction has 2173 states and 4296 transitions. [2024-11-09 19:42:01,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 19:42:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 4296 transitions. [2024-11-09 19:42:01,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-11-09 19:42:01,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:01,995 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:01,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:42:01,995 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:01,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1429089168, now seen corresponding path program 1 times [2024-11-09 19:42:01,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:01,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026800131] [2024-11-09 19:42:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:01,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-09 19:42:02,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:02,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026800131] [2024-11-09 19:42:02,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026800131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:02,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:02,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:02,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312568504] [2024-11-09 19:42:02,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:02,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:02,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:02,355 INFO L87 Difference]: Start difference. First operand 2173 states and 4296 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 19:42:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:03,994 INFO L93 Difference]: Finished difference Result 5254 states and 10588 transitions. [2024-11-09 19:42:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:03,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 367 [2024-11-09 19:42:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:04,009 INFO L225 Difference]: With dead ends: 5254 [2024-11-09 19:42:04,009 INFO L226 Difference]: Without dead ends: 3383 [2024-11-09 19:42:04,012 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 19:42:04,015 INFO L432 NwaCegarLoop]: 834 mSDtfsCounter, 543 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:04,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 873 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:42:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2024-11-09 19:42:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 3083. [2024-11-09 19:42:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 3082 states have (on average 1.9383517196625568) internal successors, (5974), 3082 states have internal predecessors, (5974), 0 states have call successors, (0), 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 19:42:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 5974 transitions. [2024-11-09 19:42:04,068 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 5974 transitions. Word has length 367 [2024-11-09 19:42:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:04,069 INFO L471 AbstractCegarLoop]: Abstraction has 3083 states and 5974 transitions. [2024-11-09 19:42:04,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 19:42:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 5974 transitions. [2024-11-09 19:42:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-09 19:42:04,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:04,074 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:04,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:42:04,075 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:04,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:04,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1616774450, now seen corresponding path program 1 times [2024-11-09 19:42:04,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:04,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754973302] [2024-11-09 19:42:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:04,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:42:04,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:04,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754973302] [2024-11-09 19:42:04,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754973302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:04,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:04,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:04,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203920761] [2024-11-09 19:42:04,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:04,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:04,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:04,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:04,490 INFO L87 Difference]: Start difference. First operand 3083 states and 5974 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 19:42:06,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:06,560 INFO L93 Difference]: Finished difference Result 7075 states and 13950 transitions. [2024-11-09 19:42:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:06,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 372 [2024-11-09 19:42:06,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:06,575 INFO L225 Difference]: With dead ends: 7075 [2024-11-09 19:42:06,575 INFO L226 Difference]: Without dead ends: 4294 [2024-11-09 19:42:06,579 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 19:42:06,580 INFO L432 NwaCegarLoop]: 799 mSDtfsCounter, 482 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:06,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 838 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:42:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2024-11-09 19:42:06,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 4291. [2024-11-09 19:42:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4291 states, 4290 states have (on average 1.913986013986014) internal successors, (8211), 4290 states have internal predecessors, (8211), 0 states have call successors, (0), 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 19:42:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4291 states to 4291 states and 8211 transitions. [2024-11-09 19:42:06,656 INFO L78 Accepts]: Start accepts. Automaton has 4291 states and 8211 transitions. Word has length 372 [2024-11-09 19:42:06,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:06,656 INFO L471 AbstractCegarLoop]: Abstraction has 4291 states and 8211 transitions. [2024-11-09 19:42:06,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 19:42:06,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4291 states and 8211 transitions. [2024-11-09 19:42:06,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-09 19:42:06,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:06,663 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:06,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:42:06,663 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:06,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash -293303934, now seen corresponding path program 1 times [2024-11-09 19:42:06,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:06,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462946073] [2024-11-09 19:42:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:06,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-09 19:42:06,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:06,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462946073] [2024-11-09 19:42:06,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462946073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:06,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:06,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:06,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000151750] [2024-11-09 19:42:06,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:06,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:06,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:06,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:06,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:06,991 INFO L87 Difference]: Start difference. First operand 4291 states and 8211 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 19:42:08,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:08,921 INFO L93 Difference]: Finished difference Result 9481 states and 18412 transitions. [2024-11-09 19:42:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:08,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 390 [2024-11-09 19:42:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:08,940 INFO L225 Difference]: With dead ends: 9481 [2024-11-09 19:42:08,940 INFO L226 Difference]: Without dead ends: 5492 [2024-11-09 19:42:08,946 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 19:42:08,946 INFO L432 NwaCegarLoop]: 814 mSDtfsCounter, 477 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:08,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 855 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:42:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5492 states. [2024-11-09 19:42:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5492 to 5189. [2024-11-09 19:42:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 1.9069005397070162) internal successors, (9893), 5188 states have internal predecessors, (9893), 0 states have call successors, (0), 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 19:42:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 9893 transitions. [2024-11-09 19:42:09,034 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 9893 transitions. Word has length 390 [2024-11-09 19:42:09,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:09,035 INFO L471 AbstractCegarLoop]: Abstraction has 5189 states and 9893 transitions. [2024-11-09 19:42:09,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 19:42:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 9893 transitions. [2024-11-09 19:42:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-09 19:42:09,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:09,044 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:09,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:42:09,044 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:09,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1515738506, now seen corresponding path program 1 times [2024-11-09 19:42:09,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:09,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305624644] [2024-11-09 19:42:09,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:09,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2024-11-09 19:42:09,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:09,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305624644] [2024-11-09 19:42:09,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305624644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:09,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:09,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:09,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845194220] [2024-11-09 19:42:09,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:09,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:09,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:09,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:09,412 INFO L87 Difference]: Start difference. First operand 5189 states and 9893 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 19:42:11,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:11,105 INFO L93 Difference]: Finished difference Result 11575 states and 22363 transitions. [2024-11-09 19:42:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:11,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 486 [2024-11-09 19:42:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:11,118 INFO L225 Difference]: With dead ends: 11575 [2024-11-09 19:42:11,118 INFO L226 Difference]: Without dead ends: 6688 [2024-11-09 19:42:11,123 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 19:42:11,124 INFO L432 NwaCegarLoop]: 662 mSDtfsCounter, 630 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:11,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 684 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:42:11,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6688 states. [2024-11-09 19:42:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6688 to 6688. [2024-11-09 19:42:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6688 states, 6687 states have (on average 1.9289666517122777) internal successors, (12899), 6687 states have internal predecessors, (12899), 0 states have call successors, (0), 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 19:42:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6688 states to 6688 states and 12899 transitions. [2024-11-09 19:42:11,232 INFO L78 Accepts]: Start accepts. Automaton has 6688 states and 12899 transitions. Word has length 486 [2024-11-09 19:42:11,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:11,234 INFO L471 AbstractCegarLoop]: Abstraction has 6688 states and 12899 transitions. [2024-11-09 19:42:11,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 19:42:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 6688 states and 12899 transitions. [2024-11-09 19:42:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2024-11-09 19:42:11,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:11,238 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:11,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:42:11,239 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:11,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1798858190, now seen corresponding path program 1 times [2024-11-09 19:42:11,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:11,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799636127] [2024-11-09 19:42:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:11,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2024-11-09 19:42:11,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:11,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799636127] [2024-11-09 19:42:11,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799636127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:11,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:11,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:11,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971100449] [2024-11-09 19:42:11,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:11,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:11,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:11,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:11,758 INFO L87 Difference]: Start difference. First operand 6688 states and 12899 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 19:42:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:13,371 INFO L93 Difference]: Finished difference Result 18188 states and 35225 transitions. [2024-11-09 19:42:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:13,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 511 [2024-11-09 19:42:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:13,394 INFO L225 Difference]: With dead ends: 18188 [2024-11-09 19:42:13,394 INFO L226 Difference]: Without dead ends: 11802 [2024-11-09 19:42:13,399 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 19:42:13,400 INFO L432 NwaCegarLoop]: 823 mSDtfsCounter, 478 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:13,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 858 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:42:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11802 states. [2024-11-09 19:42:13,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11802 to 11191. [2024-11-09 19:42:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11191 states, 11190 states have (on average 1.9041108132260947) internal successors, (21307), 11190 states have internal predecessors, (21307), 0 states have call successors, (0), 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 19:42:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11191 states to 11191 states and 21307 transitions. [2024-11-09 19:42:13,543 INFO L78 Accepts]: Start accepts. Automaton has 11191 states and 21307 transitions. Word has length 511 [2024-11-09 19:42:13,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:13,543 INFO L471 AbstractCegarLoop]: Abstraction has 11191 states and 21307 transitions. [2024-11-09 19:42:13,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 19:42:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 11191 states and 21307 transitions. [2024-11-09 19:42:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2024-11-09 19:42:13,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:13,551 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:13,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:42:13,551 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:13,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash 200386775, now seen corresponding path program 1 times [2024-11-09 19:42:13,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:13,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028247569] [2024-11-09 19:42:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:13,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 533 proven. 39 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-09 19:42:14,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028247569] [2024-11-09 19:42:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028247569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172570221] [2024-11-09 19:42:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:14,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:14,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:42:14,273 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 19:42:14,277 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 19:42:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:14,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 19:42:14,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:42:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 533 proven. 39 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-09 19:42:15,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:42:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 533 proven. 39 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-09 19:42:16,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172570221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:42:16,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:42:16,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 19:42:16,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489314390] [2024-11-09 19:42:16,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:42:16,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 19:42:16,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:16,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 19:42:16,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:42:16,263 INFO L87 Difference]: Start difference. First operand 11191 states and 21307 transitions. Second operand has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 8 states have internal predecessors, (735), 0 states have call successors, (0), 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 19:42:23,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:23,672 INFO L93 Difference]: Finished difference Result 29546 states and 55905 transitions. [2024-11-09 19:42:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 19:42:23,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 8 states have internal predecessors, (735), 0 states have call successors, (0), 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 578 [2024-11-09 19:42:23,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:23,700 INFO L225 Difference]: With dead ends: 29546 [2024-11-09 19:42:23,700 INFO L226 Difference]: Without dead ends: 13592 [2024-11-09 19:42:23,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 1151 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2024-11-09 19:42:23,715 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 5871 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 9594 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5871 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 10297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 9594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:23,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5871 Valid, 267 Invalid, 10297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 9594 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-09 19:42:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13592 states. [2024-11-09 19:42:23,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13592 to 10589. [2024-11-09 19:42:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10589 states, 10588 states have (on average 1.837551945598791) internal successors, (19456), 10588 states have internal predecessors, (19456), 0 states have call successors, (0), 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 19:42:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10589 states to 10589 states and 19456 transitions. [2024-11-09 19:42:23,967 INFO L78 Accepts]: Start accepts. Automaton has 10589 states and 19456 transitions. Word has length 578 [2024-11-09 19:42:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:23,968 INFO L471 AbstractCegarLoop]: Abstraction has 10589 states and 19456 transitions. [2024-11-09 19:42:23,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 8 states have internal predecessors, (735), 0 states have call successors, (0), 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 19:42:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 10589 states and 19456 transitions. [2024-11-09 19:42:23,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2024-11-09 19:42:23,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:23,976 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:23,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:42:24,176 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,SelfDestructingSolverStorable11 [2024-11-09 19:42:24,177 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:24,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:24,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1110076913, now seen corresponding path program 1 times [2024-11-09 19:42:24,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:24,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719484406] [2024-11-09 19:42:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:24,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2024-11-09 19:42:24,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719484406] [2024-11-09 19:42:24,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719484406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:24,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:24,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:24,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416586229] [2024-11-09 19:42:24,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:24,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:24,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:24,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:24,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:24,556 INFO L87 Difference]: Start difference. First operand 10589 states and 19456 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 19:42:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:25,860 INFO L93 Difference]: Finished difference Result 21174 states and 38920 transitions. [2024-11-09 19:42:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:25,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 603 [2024-11-09 19:42:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:25,879 INFO L225 Difference]: With dead ends: 21174 [2024-11-09 19:42:25,880 INFO L226 Difference]: Without dead ends: 10887 [2024-11-09 19:42:25,889 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 19:42:25,890 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 671 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:25,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 72 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:42:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10887 states. [2024-11-09 19:42:26,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10887 to 10587. [2024-11-09 19:42:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10587 states, 10586 states have (on average 1.8375212544870583) internal successors, (19452), 10586 states have internal predecessors, (19452), 0 states have call successors, (0), 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 19:42:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10587 states to 10587 states and 19452 transitions. [2024-11-09 19:42:26,086 INFO L78 Accepts]: Start accepts. Automaton has 10587 states and 19452 transitions. Word has length 603 [2024-11-09 19:42:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:26,087 INFO L471 AbstractCegarLoop]: Abstraction has 10587 states and 19452 transitions. [2024-11-09 19:42:26,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 19:42:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 10587 states and 19452 transitions. [2024-11-09 19:42:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2024-11-09 19:42:26,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:26,096 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:26,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:42:26,096 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:26,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:26,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1218733688, now seen corresponding path program 1 times [2024-11-09 19:42:26,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:26,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476103779] [2024-11-09 19:42:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:26,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-11-09 19:42:27,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476103779] [2024-11-09 19:42:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476103779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:27,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:27,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804450816] [2024-11-09 19:42:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:27,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:27,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:27,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:27,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:27,010 INFO L87 Difference]: Start difference. First operand 10587 states and 19452 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 19:42:28,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:28,257 INFO L93 Difference]: Finished difference Result 21178 states and 38909 transitions. [2024-11-09 19:42:28,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:28,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 623 [2024-11-09 19:42:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:28,272 INFO L225 Difference]: With dead ends: 21178 [2024-11-09 19:42:28,273 INFO L226 Difference]: Without dead ends: 10593 [2024-11-09 19:42:28,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 19:42:28,283 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 590 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:28,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 143 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:42:28,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10593 states. [2024-11-09 19:42:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10593 to 9987. [2024-11-09 19:42:28,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9987 states, 9986 states have (on average 1.8229521329861806) internal successors, (18204), 9986 states have internal predecessors, (18204), 0 states have call successors, (0), 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 19:42:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 18204 transitions. [2024-11-09 19:42:28,405 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 18204 transitions. Word has length 623 [2024-11-09 19:42:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:28,406 INFO L471 AbstractCegarLoop]: Abstraction has 9987 states and 18204 transitions. [2024-11-09 19:42:28,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 19:42:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 18204 transitions. [2024-11-09 19:42:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2024-11-09 19:42:28,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:28,413 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:42:28,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:42:28,414 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:28,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash 938988634, now seen corresponding path program 1 times [2024-11-09 19:42:28,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:28,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83053548] [2024-11-09 19:42:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2024-11-09 19:42:28,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:28,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83053548] [2024-11-09 19:42:28,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83053548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:28,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:28,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:28,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246391895] [2024-11-09 19:42:28,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:28,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:28,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:28,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:28,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:28,777 INFO L87 Difference]: Start difference. First operand 9987 states and 18204 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 19:42:30,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:30,138 INFO L93 Difference]: Finished difference Result 22970 states and 41934 transitions. [2024-11-09 19:42:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:30,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 647 [2024-11-09 19:42:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:30,154 INFO L225 Difference]: With dead ends: 22970 [2024-11-09 19:42:30,154 INFO L226 Difference]: Without dead ends: 12985 [2024-11-09 19:42:30,163 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 19:42:30,164 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 551 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:30,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 187 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:42:30,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12985 states. [2024-11-09 19:42:30,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12985 to 11785. [2024-11-09 19:42:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11785 states, 11784 states have (on average 1.8178886625933468) internal successors, (21422), 11784 states have internal predecessors, (21422), 0 states have call successors, (0), 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 19:42:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11785 states to 11785 states and 21422 transitions. [2024-11-09 19:42:30,306 INFO L78 Accepts]: Start accepts. Automaton has 11785 states and 21422 transitions. Word has length 647 [2024-11-09 19:42:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:30,307 INFO L471 AbstractCegarLoop]: Abstraction has 11785 states and 21422 transitions. [2024-11-09 19:42:30,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 19:42:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 11785 states and 21422 transitions. [2024-11-09 19:42:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2024-11-09 19:42:30,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:30,315 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:30,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:42:30,315 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:30,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:30,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1325999174, now seen corresponding path program 1 times [2024-11-09 19:42:30,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:30,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493754152] [2024-11-09 19:42:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:30,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:31,143 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 495 proven. 192 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 19:42:31,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:31,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493754152] [2024-11-09 19:42:31,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493754152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:31,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285206097] [2024-11-09 19:42:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:31,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:31,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:42:31,146 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 19:42:31,147 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 19:42:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:31,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:42:31,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:42:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2024-11-09 19:42:31,638 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:42:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285206097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:31,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:42:31,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:42:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680624148] [2024-11-09 19:42:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:31,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:31,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:42:31,640 INFO L87 Difference]: Start difference. First operand 11785 states and 21422 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 19:42:33,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:33,149 INFO L93 Difference]: Finished difference Result 28091 states and 51142 transitions. [2024-11-09 19:42:33,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:33,149 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 655 [2024-11-09 19:42:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:33,168 INFO L225 Difference]: With dead ends: 28091 [2024-11-09 19:42:33,169 INFO L226 Difference]: Without dead ends: 16308 [2024-11-09 19:42:33,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:42:33,179 INFO L432 NwaCegarLoop]: 688 mSDtfsCounter, 555 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:33,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 718 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 19:42:33,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16308 states. [2024-11-09 19:42:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16308 to 16297. [2024-11-09 19:42:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16297 states, 16296 states have (on average 1.817685321551301) internal successors, (29621), 16296 states have internal predecessors, (29621), 0 states have call successors, (0), 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 19:42:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16297 states to 16297 states and 29621 transitions. [2024-11-09 19:42:33,378 INFO L78 Accepts]: Start accepts. Automaton has 16297 states and 29621 transitions. Word has length 655 [2024-11-09 19:42:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:33,379 INFO L471 AbstractCegarLoop]: Abstraction has 16297 states and 29621 transitions. [2024-11-09 19:42:33,379 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 19:42:33,379 INFO L276 IsEmpty]: Start isEmpty. Operand 16297 states and 29621 transitions. [2024-11-09 19:42:33,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2024-11-09 19:42:33,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:33,391 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:42:33,409 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 19:42:33,591 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,SelfDestructingSolverStorable15 [2024-11-09 19:42:33,592 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:33,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:33,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1655671268, now seen corresponding path program 1 times [2024-11-09 19:42:33,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:33,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555808929] [2024-11-09 19:42:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:33,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-09 19:42:34,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:34,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555808929] [2024-11-09 19:42:34,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555808929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:34,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:34,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:34,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628635091] [2024-11-09 19:42:34,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:34,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:34,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:34,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:34,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:34,209 INFO L87 Difference]: Start difference. First operand 16297 states and 29621 transitions. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 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 19:42:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:35,623 INFO L93 Difference]: Finished difference Result 37993 states and 69194 transitions. [2024-11-09 19:42:35,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:35,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 688 [2024-11-09 19:42:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:35,646 INFO L225 Difference]: With dead ends: 37993 [2024-11-09 19:42:35,646 INFO L226 Difference]: Without dead ends: 21998 [2024-11-09 19:42:35,657 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 19:42:35,658 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 299 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:35,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 159 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:42:35,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21998 states. [2024-11-09 19:42:35,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21998 to 19898. [2024-11-09 19:42:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19898 states, 19897 states have (on average 1.820224154395135) internal successors, (36217), 19897 states have internal predecessors, (36217), 0 states have call successors, (0), 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 19:42:36,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19898 states to 19898 states and 36217 transitions. [2024-11-09 19:42:36,008 INFO L78 Accepts]: Start accepts. Automaton has 19898 states and 36217 transitions. Word has length 688 [2024-11-09 19:42:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:36,010 INFO L471 AbstractCegarLoop]: Abstraction has 19898 states and 36217 transitions. [2024-11-09 19:42:36,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 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 19:42:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 19898 states and 36217 transitions. [2024-11-09 19:42:36,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2024-11-09 19:42:36,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:36,028 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:36,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:42:36,028 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:36,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:36,029 INFO L85 PathProgramCache]: Analyzing trace with hash 580707338, now seen corresponding path program 1 times [2024-11-09 19:42:36,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:36,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143094368] [2024-11-09 19:42:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:36,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2024-11-09 19:42:36,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:36,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143094368] [2024-11-09 19:42:36,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143094368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:36,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:36,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:36,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068081815] [2024-11-09 19:42:36,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:36,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:36,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:36,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:36,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:36,442 INFO L87 Difference]: Start difference. First operand 19898 states and 36217 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 19:42:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:37,630 INFO L93 Difference]: Finished difference Result 42491 states and 77443 transitions. [2024-11-09 19:42:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:37,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 705 [2024-11-09 19:42:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:37,661 INFO L225 Difference]: With dead ends: 42491 [2024-11-09 19:42:37,661 INFO L226 Difference]: Without dead ends: 22595 [2024-11-09 19:42:37,675 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 19:42:37,676 INFO L432 NwaCegarLoop]: 723 mSDtfsCounter, 531 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:37,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 763 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:42:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22595 states. [2024-11-09 19:42:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22595 to 21094. [2024-11-09 19:42:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21094 states, 21093 states have (on average 1.8142985824681175) internal successors, (38269), 21093 states have internal predecessors, (38269), 0 states have call successors, (0), 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 19:42:37,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21094 states to 21094 states and 38269 transitions. [2024-11-09 19:42:37,899 INFO L78 Accepts]: Start accepts. Automaton has 21094 states and 38269 transitions. Word has length 705 [2024-11-09 19:42:37,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:37,899 INFO L471 AbstractCegarLoop]: Abstraction has 21094 states and 38269 transitions. [2024-11-09 19:42:37,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 19:42:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 21094 states and 38269 transitions. [2024-11-09 19:42:37,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2024-11-09 19:42:37,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:37,913 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:42:37,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 19:42:37,914 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:37,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:37,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1758810384, now seen corresponding path program 1 times [2024-11-09 19:42:37,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:37,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822303955] [2024-11-09 19:42:37,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:37,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-09 19:42:38,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:38,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822303955] [2024-11-09 19:42:38,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822303955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:42:38,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:42:38,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:42:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34310250] [2024-11-09 19:42:38,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:38,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:38,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:38,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:42:38,333 INFO L87 Difference]: Start difference. First operand 21094 states and 38269 transitions. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 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 19:42:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:39,499 INFO L93 Difference]: Finished difference Result 42484 states and 77146 transitions. [2024-11-09 19:42:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:39,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 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 752 [2024-11-09 19:42:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:39,521 INFO L225 Difference]: With dead ends: 42484 [2024-11-09 19:42:39,522 INFO L226 Difference]: Without dead ends: 21692 [2024-11-09 19:42:39,534 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 19:42:39,534 INFO L432 NwaCegarLoop]: 667 mSDtfsCounter, 574 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:39,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 694 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:42:39,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21692 states. [2024-11-09 19:42:39,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21692 to 21092. [2024-11-09 19:42:39,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21092 states, 21091 states have (on average 1.8100611635294674) internal successors, (38176), 21091 states have internal predecessors, (38176), 0 states have call successors, (0), 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 19:42:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21092 states to 21092 states and 38176 transitions. [2024-11-09 19:42:39,717 INFO L78 Accepts]: Start accepts. Automaton has 21092 states and 38176 transitions. Word has length 752 [2024-11-09 19:42:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:39,717 INFO L471 AbstractCegarLoop]: Abstraction has 21092 states and 38176 transitions. [2024-11-09 19:42:39,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 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 19:42:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 21092 states and 38176 transitions. [2024-11-09 19:42:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2024-11-09 19:42:39,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:39,729 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:42:39,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 19:42:39,730 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:39,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1745708068, now seen corresponding path program 1 times [2024-11-09 19:42:39,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:39,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711516415] [2024-11-09 19:42:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:39,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 644 proven. 189 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-09 19:42:41,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:41,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711516415] [2024-11-09 19:42:41,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711516415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:41,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190463141] [2024-11-09 19:42:41,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:41,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:41,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:42:41,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:42:41,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:42:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:41,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 19:42:41,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:42:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 676 proven. 77 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-09 19:42:42,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:42:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-09 19:42:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190463141] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:44,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:42:44,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 8 [2024-11-09 19:42:44,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966500084] [2024-11-09 19:42:44,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:42:44,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:42:44,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:44,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:42:44,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:42:44,323 INFO L87 Difference]: Start difference. First operand 21092 states and 38176 transitions. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 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 19:42:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:42:45,680 INFO L93 Difference]: Finished difference Result 42786 states and 77441 transitions. [2024-11-09 19:42:45,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:42:45,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 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 847 [2024-11-09 19:42:45,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:42:45,702 INFO L225 Difference]: With dead ends: 42786 [2024-11-09 19:42:45,703 INFO L226 Difference]: Without dead ends: 21996 [2024-11-09 19:42:45,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1696 GetRequests, 1690 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:42:45,715 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 298 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:42:45,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 74 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:42:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21996 states. [2024-11-09 19:42:45,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21996 to 21992. [2024-11-09 19:42:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21992 states, 21991 states have (on average 1.806147969623937) internal successors, (39719), 21991 states have internal predecessors, (39719), 0 states have call successors, (0), 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 19:42:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21992 states to 21992 states and 39719 transitions. [2024-11-09 19:42:45,893 INFO L78 Accepts]: Start accepts. Automaton has 21992 states and 39719 transitions. Word has length 847 [2024-11-09 19:42:45,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:42:45,893 INFO L471 AbstractCegarLoop]: Abstraction has 21992 states and 39719 transitions. [2024-11-09 19:42:45,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 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 19:42:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 21992 states and 39719 transitions. [2024-11-09 19:42:45,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2024-11-09 19:42:45,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:42:45,904 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:42:45,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 19:42:46,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:46,105 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:42:46,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:42:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1703069486, now seen corresponding path program 1 times [2024-11-09 19:42:46,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:42:46,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106641119] [2024-11-09 19:42:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:46,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:42:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 657 proven. 230 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 19:42:48,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:42:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106641119] [2024-11-09 19:42:48,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106641119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:42:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291831304] [2024-11-09 19:42:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:42:48,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:42:48,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:42:48,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:42:48,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:42:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:42:48,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:42:48,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:42:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 687 proven. 107 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-09 19:42:49,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:42:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 687 proven. 107 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-09 19:42:51,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291831304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:42:51,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:42:51,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-09 19:42:51,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705259991] [2024-11-09 19:42:51,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:42:51,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 19:42:51,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:42:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 19:42:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:42:51,896 INFO L87 Difference]: Start difference. First operand 21992 states and 39719 transitions. Second operand has 9 states, 9 states have (on average 169.77777777777777) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)