./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label45.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/Problem13_label45.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 2e210509e505e706510a09c6375318a552974bcae2c812476edd01f44c4d9064 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:01:59,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:01:59,479 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:01:59,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:01:59,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:01:59,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:01:59,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:01:59,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:01:59,516 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:01:59,517 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:01:59,517 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:01:59,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:01:59,518 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:01:59,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:01:59,520 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:01:59,520 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:01:59,521 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:01:59,521 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:01:59,521 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:01:59,521 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:01:59,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:01:59,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:01:59,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:01:59,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:01:59,526 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:01:59,526 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:01:59,527 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:01:59,527 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:01:59,527 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:01:59,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:01:59,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:01:59,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:01:59,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:01:59,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:01:59,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:01:59,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:01:59,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:01:59,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:01:59,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:01:59,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:01:59,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:01:59,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:01:59,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e210509e505e706510a09c6375318a552974bcae2c812476edd01f44c4d9064 [2024-11-16 04:01:59,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:01:59,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:01:59,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:01:59,841 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:01:59,842 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:01:59,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label45.c [2024-11-16 04:02:01,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:02:01,790 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:02:01,792 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label45.c [2024-11-16 04:02:01,843 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/970b8af36/1b9f1064f57a4085bc396179a705c2a8/FLAG6ea7d3815 [2024-11-16 04:02:01,860 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/970b8af36/1b9f1064f57a4085bc396179a705c2a8 [2024-11-16 04:02:01,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:02:01,864 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:02:01,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:02:01,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:02:01,873 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:02:01,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:02:01" (1/1) ... [2024-11-16 04:02:01,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e335f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:01, skipping insertion in model container [2024-11-16 04:02:01,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:02:01" (1/1) ... [2024-11-16 04:02:01,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:02:02,237 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/Problem13_label45.c[1393,1406] [2024-11-16 04:02:03,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:02:03,094 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:02:03,107 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/Problem13_label45.c[1393,1406] [2024-11-16 04:02:03,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:02:03,643 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:02:03,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03 WrapperNode [2024-11-16 04:02:03,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:02:03,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:02:03,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:02:03,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:02:03,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:03,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:04,368 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-16 04:02:04,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:02:04,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:02:04,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:02:04,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:02:04,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:04,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:04,537 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:04,925 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]. [2024-11-16 04:02:04,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:04,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:05,124 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:05,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:05,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:05,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:05,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:02:05,256 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:02:05,256 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:02:05,257 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:02:05,258 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (1/1) ... [2024-11-16 04:02:05,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:02:05,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:02:05,290 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) [2024-11-16 04:02:05,295 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 [2024-11-16 04:02:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:02:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:02:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:02:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:02:05,391 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:02:05,392 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:02:10,353 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-16 04:02:10,353 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-16 04:02:10,353 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-16 04:02:10,648 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-16 04:02:10,649 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:02:10,693 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:02:10,693 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:02:10,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:02:10 BoogieIcfgContainer [2024-11-16 04:02:10,694 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:02:10,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:02:10,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:02:10,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:02:10,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:02:01" (1/3) ... [2024-11-16 04:02:10,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56541df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:02:10, skipping insertion in model container [2024-11-16 04:02:10,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:02:03" (2/3) ... [2024-11-16 04:02:10,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56541df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:02:10, skipping insertion in model container [2024-11-16 04:02:10,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:02:10" (3/3) ... [2024-11-16 04:02:10,703 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label45.c [2024-11-16 04:02:10,718 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:02:10,719 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:02:10,813 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:02:10,820 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;@12c29d27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:02:10,820 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:02:10,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 1099 states have (on average 1.8252957233848954) internal successors, (2006), 1100 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:10,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-16 04:02:10,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:10,835 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:10,836 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:10,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:10,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2082736180, now seen corresponding path program 1 times [2024-11-16 04:02:10,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:10,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216298664] [2024-11-16 04:02:10,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:10,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:02:11,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:11,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216298664] [2024-11-16 04:02:11,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216298664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:11,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:11,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:02:11,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831663022] [2024-11-16 04:02:11,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:11,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:11,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:11,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:11,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:11,069 INFO L87 Difference]: Start difference. First operand has 1101 states, 1099 states have (on average 1.8252957233848954) internal successors, (2006), 1100 states have internal predecessors, (2006), 0 states have call successors, (0), 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 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:14,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:14,755 INFO L93 Difference]: Finished difference Result 3041 states and 5649 transitions. [2024-11-16 04:02:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:14,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-16 04:02:14,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:14,788 INFO L225 Difference]: With dead ends: 3041 [2024-11-16 04:02:14,789 INFO L226 Difference]: Without dead ends: 1876 [2024-11-16 04:02:14,799 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 [2024-11-16 04:02:14,804 INFO L432 NwaCegarLoop]: 993 mSDtfsCounter, 898 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:14,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1149 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-16 04:02:14,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2024-11-16 04:02:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1862. [2024-11-16 04:02:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 1.5432563138097797) internal successors, (2872), 1861 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2872 transitions. [2024-11-16 04:02:14,937 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2872 transitions. Word has length 9 [2024-11-16 04:02:14,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:14,938 INFO L471 AbstractCegarLoop]: Abstraction has 1862 states and 2872 transitions. [2024-11-16 04:02:14,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:14,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2872 transitions. [2024-11-16 04:02:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 04:02:14,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:14,941 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:14,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:02:14,942 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:14,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash -81504380, now seen corresponding path program 1 times [2024-11-16 04:02:14,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:14,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811917952] [2024-11-16 04:02:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:14,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:02:15,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:15,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811917952] [2024-11-16 04:02:15,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811917952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:15,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:15,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:02:15,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595847357] [2024-11-16 04:02:15,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:15,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:15,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:15,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:15,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:15,260 INFO L87 Difference]: Start difference. First operand 1862 states and 2872 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:18,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:18,895 INFO L93 Difference]: Finished difference Result 5325 states and 8237 transitions. [2024-11-16 04:02:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:18,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2024-11-16 04:02:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:18,908 INFO L225 Difference]: With dead ends: 5325 [2024-11-16 04:02:18,909 INFO L226 Difference]: Without dead ends: 3465 [2024-11-16 04:02:18,911 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 [2024-11-16 04:02:18,912 INFO L432 NwaCegarLoop]: 1041 mSDtfsCounter, 827 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:18,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1195 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-16 04:02:18,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2024-11-16 04:02:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3464. [2024-11-16 04:02:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3464 states, 3463 states have (on average 1.3800173260179036) internal successors, (4779), 3463 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3464 states to 3464 states and 4779 transitions. [2024-11-16 04:02:18,982 INFO L78 Accepts]: Start accepts. Automaton has 3464 states and 4779 transitions. Word has length 82 [2024-11-16 04:02:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:18,983 INFO L471 AbstractCegarLoop]: Abstraction has 3464 states and 4779 transitions. [2024-11-16 04:02:18,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3464 states and 4779 transitions. [2024-11-16 04:02:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-16 04:02:18,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:18,987 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:18,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:02:18,987 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:18,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:18,988 INFO L85 PathProgramCache]: Analyzing trace with hash -492032644, now seen corresponding path program 1 times [2024-11-16 04:02:18,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:18,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640761809] [2024-11-16 04:02:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:18,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:02:19,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:19,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640761809] [2024-11-16 04:02:19,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640761809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:19,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:19,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:02:19,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935124734] [2024-11-16 04:02:19,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:19,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:19,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:19,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:19,221 INFO L87 Difference]: Start difference. First operand 3464 states and 4779 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:22,537 INFO L93 Difference]: Finished difference Result 10112 states and 13955 transitions. [2024-11-16 04:02:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:22,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-11-16 04:02:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:22,561 INFO L225 Difference]: With dead ends: 10112 [2024-11-16 04:02:22,561 INFO L226 Difference]: Without dead ends: 6650 [2024-11-16 04:02:22,566 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 [2024-11-16 04:02:22,567 INFO L432 NwaCegarLoop]: 773 mSDtfsCounter, 933 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:22,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 908 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-16 04:02:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6650 states. [2024-11-16 04:02:22,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6650 to 6640. [2024-11-16 04:02:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6640 states, 6639 states have (on average 1.2718782949239342) internal successors, (8444), 6639 states have internal predecessors, (8444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:22,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6640 states to 6640 states and 8444 transitions. [2024-11-16 04:02:22,674 INFO L78 Accepts]: Start accepts. Automaton has 6640 states and 8444 transitions. Word has length 96 [2024-11-16 04:02:22,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:22,675 INFO L471 AbstractCegarLoop]: Abstraction has 6640 states and 8444 transitions. [2024-11-16 04:02:22,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:22,675 INFO L276 IsEmpty]: Start isEmpty. Operand 6640 states and 8444 transitions. [2024-11-16 04:02:22,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-16 04:02:22,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:22,677 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:22,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:02:22,677 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:22,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:22,678 INFO L85 PathProgramCache]: Analyzing trace with hash 482230216, now seen corresponding path program 1 times [2024-11-16 04:02:22,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:22,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774576611] [2024-11-16 04:02:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:22,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:02:22,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774576611] [2024-11-16 04:02:22,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774576611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:22,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:22,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:22,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742946647] [2024-11-16 04:02:22,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:22,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:22,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:22,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:22,823 INFO L87 Difference]: Start difference. First operand 6640 states and 8444 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:25,896 INFO L93 Difference]: Finished difference Result 16443 states and 21422 transitions. [2024-11-16 04:02:25,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:25,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2024-11-16 04:02:25,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:25,928 INFO L225 Difference]: With dead ends: 16443 [2024-11-16 04:02:25,929 INFO L226 Difference]: Without dead ends: 9805 [2024-11-16 04:02:25,937 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 [2024-11-16 04:02:25,938 INFO L432 NwaCegarLoop]: 1595 mSDtfsCounter, 990 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 812 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:25,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1695 Invalid, 3368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [812 Valid, 2556 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 04:02:25,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9805 states. [2024-11-16 04:02:26,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9805 to 9796. [2024-11-16 04:02:26,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9796 states, 9795 states have (on average 1.2755487493619193) internal successors, (12494), 9795 states have internal predecessors, (12494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:26,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9796 states to 9796 states and 12494 transitions. [2024-11-16 04:02:26,091 INFO L78 Accepts]: Start accepts. Automaton has 9796 states and 12494 transitions. Word has length 99 [2024-11-16 04:02:26,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:26,092 INFO L471 AbstractCegarLoop]: Abstraction has 9796 states and 12494 transitions. [2024-11-16 04:02:26,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:26,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9796 states and 12494 transitions. [2024-11-16 04:02:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-16 04:02:26,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:26,097 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 04:02:26,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:02:26,097 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:26,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:26,098 INFO L85 PathProgramCache]: Analyzing trace with hash -405955770, now seen corresponding path program 1 times [2024-11-16 04:02:26,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:26,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61041543] [2024-11-16 04:02:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:26,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:02:26,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:26,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61041543] [2024-11-16 04:02:26,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61041543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:02:26,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147692734] [2024-11-16 04:02:26,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:26,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:02:26,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:02:26,540 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) [2024-11-16 04:02:26,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 04:02:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:26,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:02:26,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:02:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 04:02:26,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:02:26,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147692734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:26,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:02:26,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-16 04:02:26,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434441072] [2024-11-16 04:02:26,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:26,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:26,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:26,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:02:26,754 INFO L87 Difference]: Start difference. First operand 9796 states and 12494 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:33,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-16 04:02:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:34,119 INFO L93 Difference]: Finished difference Result 29185 states and 37229 transitions. [2024-11-16 04:02:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:34,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 106 [2024-11-16 04:02:34,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:34,164 INFO L225 Difference]: With dead ends: 29185 [2024-11-16 04:02:34,165 INFO L226 Difference]: Without dead ends: 19391 [2024-11-16 04:02:34,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:02:34,182 INFO L432 NwaCegarLoop]: 700 mSDtfsCounter, 1045 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 2628 mSolverCounterSat, 544 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 3173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2628 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:34,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 911 Invalid, 3173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2628 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2024-11-16 04:02:34,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19391 states. [2024-11-16 04:02:34,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19391 to 19374. [2024-11-16 04:02:34,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19374 states, 19373 states have (on average 1.2196355752851906) internal successors, (23628), 19373 states have internal predecessors, (23628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19374 states to 19374 states and 23628 transitions. [2024-11-16 04:02:34,456 INFO L78 Accepts]: Start accepts. Automaton has 19374 states and 23628 transitions. Word has length 106 [2024-11-16 04:02:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:34,457 INFO L471 AbstractCegarLoop]: Abstraction has 19374 states and 23628 transitions. [2024-11-16 04:02:34,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 19374 states and 23628 transitions. [2024-11-16 04:02:34,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-16 04:02:34,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:34,464 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:34,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:02:34,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:02:34,665 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:34,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:34,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1894095641, now seen corresponding path program 1 times [2024-11-16 04:02:34,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:34,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897120059] [2024-11-16 04:02:34,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:34,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:02:34,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:34,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897120059] [2024-11-16 04:02:34,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897120059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:34,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:34,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:34,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153196176] [2024-11-16 04:02:34,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:34,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:34,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:34,927 INFO L87 Difference]: Start difference. First operand 19374 states and 23628 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:37,733 INFO L93 Difference]: Finished difference Result 38616 states and 47078 transitions. [2024-11-16 04:02:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:37,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2024-11-16 04:02:37,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:37,768 INFO L225 Difference]: With dead ends: 38616 [2024-11-16 04:02:37,768 INFO L226 Difference]: Without dead ends: 19244 [2024-11-16 04:02:37,791 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 [2024-11-16 04:02:37,793 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 1024 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:37,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1652 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-16 04:02:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19244 states. [2024-11-16 04:02:37,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19244 to 18453. [2024-11-16 04:02:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18453 states, 18452 states have (on average 1.1533167136353784) internal successors, (21281), 18452 states have internal predecessors, (21281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18453 states to 18453 states and 21281 transitions. [2024-11-16 04:02:38,031 INFO L78 Accepts]: Start accepts. Automaton has 18453 states and 21281 transitions. Word has length 232 [2024-11-16 04:02:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:38,032 INFO L471 AbstractCegarLoop]: Abstraction has 18453 states and 21281 transitions. [2024-11-16 04:02:38,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:38,033 INFO L276 IsEmpty]: Start isEmpty. Operand 18453 states and 21281 transitions. [2024-11-16 04:02:38,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-16 04:02:38,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:38,037 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:38,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:02:38,038 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:38,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:38,038 INFO L85 PathProgramCache]: Analyzing trace with hash 188754467, now seen corresponding path program 1 times [2024-11-16 04:02:38,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:38,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012488961] [2024-11-16 04:02:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:38,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 04:02:38,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:38,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012488961] [2024-11-16 04:02:38,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012488961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:38,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:38,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:02:38,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993057197] [2024-11-16 04:02:38,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:38,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:38,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:38,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:38,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:38,524 INFO L87 Difference]: Start difference. First operand 18453 states and 21281 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:41,219 INFO L93 Difference]: Finished difference Result 37692 states and 43363 transitions. [2024-11-16 04:02:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 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 245 [2024-11-16 04:02:41,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:41,249 INFO L225 Difference]: With dead ends: 37692 [2024-11-16 04:02:41,249 INFO L226 Difference]: Without dead ends: 19241 [2024-11-16 04:02:41,268 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 [2024-11-16 04:02:41,269 INFO L432 NwaCegarLoop]: 1052 mSDtfsCounter, 700 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:41,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1183 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 04:02:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19241 states. [2024-11-16 04:02:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19241 to 19241. [2024-11-16 04:02:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19241 states, 19240 states have (on average 1.1472972972972972) internal successors, (22074), 19240 states have internal predecessors, (22074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19241 states to 19241 states and 22074 transitions. [2024-11-16 04:02:41,516 INFO L78 Accepts]: Start accepts. Automaton has 19241 states and 22074 transitions. Word has length 245 [2024-11-16 04:02:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:41,517 INFO L471 AbstractCegarLoop]: Abstraction has 19241 states and 22074 transitions. [2024-11-16 04:02:41,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 19241 states and 22074 transitions. [2024-11-16 04:02:41,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-16 04:02:41,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:41,521 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:41,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:02:41,521 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:41,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:41,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1881997857, now seen corresponding path program 1 times [2024-11-16 04:02:41,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:41,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969840911] [2024-11-16 04:02:41,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:41,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 04:02:41,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:41,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969840911] [2024-11-16 04:02:41,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969840911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:41,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:41,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:41,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54721804] [2024-11-16 04:02:41,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:41,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:02:41,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:41,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:02:41,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:02:41,774 INFO L87 Difference]: Start difference. First operand 19241 states and 22074 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:47,990 INFO L93 Difference]: Finished difference Result 70993 states and 81648 transitions. [2024-11-16 04:02:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:02:47,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 252 [2024-11-16 04:02:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:48,059 INFO L225 Difference]: With dead ends: 70993 [2024-11-16 04:02:48,061 INFO L226 Difference]: Without dead ends: 52542 [2024-11-16 04:02:48,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:02:48,078 INFO L432 NwaCegarLoop]: 678 mSDtfsCounter, 1734 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 6790 mSolverCounterSat, 1026 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 7816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1026 IncrementalHoareTripleChecker+Valid, 6790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:48,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 921 Invalid, 7816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1026 Valid, 6790 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-16 04:02:48,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52542 states. [2024-11-16 04:02:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52542 to 50844. [2024-11-16 04:02:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50844 states, 50843 states have (on average 1.1287689554117577) internal successors, (57390), 50843 states have internal predecessors, (57390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50844 states to 50844 states and 57390 transitions. [2024-11-16 04:02:48,582 INFO L78 Accepts]: Start accepts. Automaton has 50844 states and 57390 transitions. Word has length 252 [2024-11-16 04:02:48,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:48,583 INFO L471 AbstractCegarLoop]: Abstraction has 50844 states and 57390 transitions. [2024-11-16 04:02:48,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 50844 states and 57390 transitions. [2024-11-16 04:02:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-16 04:02:48,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:48,592 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:48,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:02:48,593 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:48,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:48,594 INFO L85 PathProgramCache]: Analyzing trace with hash 747039163, now seen corresponding path program 1 times [2024-11-16 04:02:48,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:48,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991057084] [2024-11-16 04:02:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:48,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 04:02:48,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:48,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991057084] [2024-11-16 04:02:48,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991057084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:48,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:48,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:48,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099026323] [2024-11-16 04:02:48,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:48,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:48,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:48,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:48,816 INFO L87 Difference]: Start difference. First operand 50844 states and 57390 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:52,534 INFO L93 Difference]: Finished difference Result 102480 states and 115581 transitions. [2024-11-16 04:02:52,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:52,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 310 [2024-11-16 04:02:52,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:52,592 INFO L225 Difference]: With dead ends: 102480 [2024-11-16 04:02:52,592 INFO L226 Difference]: Without dead ends: 52426 [2024-11-16 04:02:52,616 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 [2024-11-16 04:02:52,617 INFO L432 NwaCegarLoop]: 796 mSDtfsCounter, 829 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 3130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:52,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 910 Invalid, 3130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-16 04:02:52,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52426 states. [2024-11-16 04:02:52,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52426 to 50840. [2024-11-16 04:02:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50840 states, 50839 states have (on average 1.0956352406616967) internal successors, (55701), 50839 states have internal predecessors, (55701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50840 states to 50840 states and 55701 transitions. [2024-11-16 04:02:53,077 INFO L78 Accepts]: Start accepts. Automaton has 50840 states and 55701 transitions. Word has length 310 [2024-11-16 04:02:53,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:53,078 INFO L471 AbstractCegarLoop]: Abstraction has 50840 states and 55701 transitions. [2024-11-16 04:02:53,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 50840 states and 55701 transitions. [2024-11-16 04:02:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-16 04:02:53,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:53,083 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 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] [2024-11-16 04:02:53,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:02:53,083 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:53,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:53,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1065586333, now seen corresponding path program 1 times [2024-11-16 04:02:53,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:53,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890903572] [2024-11-16 04:02:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:53,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 232 proven. 6 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-16 04:02:55,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:55,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890903572] [2024-11-16 04:02:55,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890903572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:02:55,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687127111] [2024-11-16 04:02:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:55,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:02:55,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:02:55,616 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) [2024-11-16 04:02:55,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 04:02:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:55,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:02:55,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:02:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 04:02:56,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:02:56,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687127111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:56,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:02:56,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 04:02:56,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958405959] [2024-11-16 04:02:56,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:56,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:02:56,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:56,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:02:56,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:02:56,240 INFO L87 Difference]: Start difference. First operand 50840 states and 55701 transitions. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:03:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:03:01,697 INFO L93 Difference]: Finished difference Result 131010 states and 143624 transitions. [2024-11-16 04:03:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:03:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 342 [2024-11-16 04:03:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:03:01,780 INFO L225 Difference]: With dead ends: 131010 [2024-11-16 04:03:01,781 INFO L226 Difference]: Without dead ends: 80960 [2024-11-16 04:03:01,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:03:01,802 INFO L432 NwaCegarLoop]: 604 mSDtfsCounter, 1692 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 5877 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 6657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 5877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:03:01,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 791 Invalid, 6657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 5877 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-16 04:03:01,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80960 states. [2024-11-16 04:03:02,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80960 to 80062. [2024-11-16 04:03:02,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80062 states, 80061 states have (on average 1.0946528272192453) internal successors, (87639), 80061 states have internal predecessors, (87639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:03:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80062 states to 80062 states and 87639 transitions. [2024-11-16 04:03:02,497 INFO L78 Accepts]: Start accepts. Automaton has 80062 states and 87639 transitions. Word has length 342 [2024-11-16 04:03:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:03:02,497 INFO L471 AbstractCegarLoop]: Abstraction has 80062 states and 87639 transitions. [2024-11-16 04:03:02,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:03:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 80062 states and 87639 transitions. [2024-11-16 04:03:02,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-16 04:03:02,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:03:02,503 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-16 04:03:02,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 04:03:02,703 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,SelfDestructingSolverStorable9 [2024-11-16 04:03:02,704 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:03:02,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:03:02,705 INFO L85 PathProgramCache]: Analyzing trace with hash 209147397, now seen corresponding path program 1 times [2024-11-16 04:03:02,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:03:02,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089328154] [2024-11-16 04:03:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:03:02,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:03:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:03:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 04:03:03,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:03:03,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089328154] [2024-11-16 04:03:03,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089328154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:03:03,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:03:03,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:03:03,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050899053] [2024-11-16 04:03:03,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:03:03,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:03:03,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:03:03,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:03:03,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:03:03,507 INFO L87 Difference]: Start difference. First operand 80062 states and 87639 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:03:06,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:03:06,526 INFO L93 Difference]: Finished difference Result 160946 states and 176124 transitions. [2024-11-16 04:03:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:03:06,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 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 345 [2024-11-16 04:03:06,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:03:06,776 INFO L225 Difference]: With dead ends: 160946 [2024-11-16 04:03:06,776 INFO L226 Difference]: Without dead ends: 80096 [2024-11-16 04:03:06,800 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 [2024-11-16 04:03:06,801 INFO L432 NwaCegarLoop]: 1772 mSDtfsCounter, 721 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:03:06,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1910 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 04:03:06,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80096 states. [2024-11-16 04:03:07,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80096 to 79269. [2024-11-16 04:03:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79269 states, 79268 states have (on average 1.0837790785689054) internal successors, (85909), 79268 states have internal predecessors, (85909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:03:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79269 states to 79269 states and 85909 transitions. [2024-11-16 04:03:07,692 INFO L78 Accepts]: Start accepts. Automaton has 79269 states and 85909 transitions. Word has length 345 [2024-11-16 04:03:07,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:03:07,692 INFO L471 AbstractCegarLoop]: Abstraction has 79269 states and 85909 transitions. [2024-11-16 04:03:07,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:03:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 79269 states and 85909 transitions. [2024-11-16 04:03:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-16 04:03:07,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:03:07,697 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:03:07,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:03:07,697 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:03:07,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:03:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash -70938464, now seen corresponding path program 1 times [2024-11-16 04:03:07,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:03:07,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457849543] [2024-11-16 04:03:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:03:07,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:03:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:03:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-16 04:03:08,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:03:08,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457849543] [2024-11-16 04:03:08,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457849543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:03:08,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:03:08,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:03:08,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937832596] [2024-11-16 04:03:08,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:03:08,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:03:08,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:03:08,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:03:08,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:03:08,479 INFO L87 Difference]: Start difference. First operand 79269 states and 85909 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:03:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:03:11,905 INFO L93 Difference]: Finished difference Result 182971 states and 199505 transitions. [2024-11-16 04:03:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:03:11,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2024-11-16 04:03:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:03:12,025 INFO L225 Difference]: With dead ends: 182971 [2024-11-16 04:03:12,026 INFO L226 Difference]: Without dead ends: 104492 [2024-11-16 04:03:12,063 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 [2024-11-16 04:03:12,064 INFO L432 NwaCegarLoop]: 1760 mSDtfsCounter, 791 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2519 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 2997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:03:12,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1902 Invalid, 2997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 2519 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 04:03:12,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104492 states. [2024-11-16 04:03:13,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104492 to 99751. [2024-11-16 04:03:13,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99751 states, 99750 states have (on average 1.0788671679197994) internal successors, (107617), 99750 states have internal predecessors, (107617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:03:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99751 states to 99751 states and 107617 transitions. [2024-11-16 04:03:13,714 INFO L78 Accepts]: Start accepts. Automaton has 99751 states and 107617 transitions. Word has length 374 [2024-11-16 04:03:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:03:13,714 INFO L471 AbstractCegarLoop]: Abstraction has 99751 states and 107617 transitions. [2024-11-16 04:03:13,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:03:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 99751 states and 107617 transitions. [2024-11-16 04:03:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-16 04:03:13,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:03:13,720 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:03:13,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 04:03:13,720 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:03:13,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:03:13,721 INFO L85 PathProgramCache]: Analyzing trace with hash -746800076, now seen corresponding path program 1 times [2024-11-16 04:03:13,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:03:13,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957991526] [2024-11-16 04:03:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:03:13,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:03:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:03:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 336 proven. 111 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-16 04:03:15,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:03:15,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957991526] [2024-11-16 04:03:15,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957991526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:03:15,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733194542] [2024-11-16 04:03:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:03:15,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:03:15,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:03:15,080 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) [2024-11-16 04:03:15,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 04:03:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:03:15,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:03:15,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:03:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2024-11-16 04:03:15,331 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:03:15,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733194542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:03:15,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:03:15,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 04:03:15,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562963782] [2024-11-16 04:03:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:03:15,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:03:15,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:03:15,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:03:15,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:03:15,333 INFO L87 Difference]: Start difference. First operand 99751 states and 107617 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)