./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem14_label42.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a5efd35608b2274a82684e59fb25c4995783dd9fff74f1e981ddde01ab75357 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:38:44,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:38:44,353 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:38:44,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:38:44,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:38:44,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:38:44,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:38:44,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:38:44,393 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:38:44,394 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:38:44,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:38:44,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:38:44,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:38:44,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:38:44,395 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:38:44,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:38:44,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:38:44,396 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:38:44,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:38:44,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:38:44,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:38:44,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:38:44,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:38:44,401 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:38:44,401 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:38:44,402 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:38:44,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:38:44,402 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:38:44,402 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:38:44,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:38:44,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:38:44,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:38:44,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:38:44,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:38:44,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:38:44,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:38:44,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:38:44,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:38:44,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:38:44,405 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:38:44,406 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:38:44,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:38:44,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a5efd35608b2274a82684e59fb25c4995783dd9fff74f1e981ddde01ab75357 [2024-11-09 19:38:44,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:38:44,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:38:44,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:38:44,635 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:38:44,635 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:38:44,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label42.c [2024-11-09 19:38:46,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:38:46,276 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:38:46,276 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label42.c [2024-11-09 19:38:46,304 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4632a6124/6f4536906a4f49439dc24094caf746a5/FLAGf312be2ba [2024-11-09 19:38:46,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4632a6124/6f4536906a4f49439dc24094caf746a5 [2024-11-09 19:38:46,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:38:46,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:38:46,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:38:46,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:38:46,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:38:46,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:46,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a75f8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46, skipping insertion in model container [2024-11-09 19:38:46,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:46,389 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:38:46,568 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/Problem14_label42.c[4428,4441] [2024-11-09 19:38:46,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:38:46,694 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:38:46,712 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/Problem14_label42.c[4428,4441] [2024-11-09 19:38:46,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:38:46,900 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:38:46,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46 WrapperNode [2024-11-09 19:38:46,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:38:46,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:38:46,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:38:46,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:38:46,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:46,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:47,006 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2024-11-09 19:38:47,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:38:47,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:38:47,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:38:47,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:38:47,016 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:47,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:47,025 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:47,054 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:38:47,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:47,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:47,081 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:47,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:47,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:47,089 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:47,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:38:47,095 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:38:47,095 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:38:47,095 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:38:47,096 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (1/1) ... [2024-11-09 19:38:47,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:38:47,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:47,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:38:47,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:38:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:38:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:38:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:38:47,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:38:47,219 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:38:47,220 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:38:48,253 INFO L? ?]: Removed 236 outVars from TransFormulas that were not future-live. [2024-11-09 19:38:48,254 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:38:48,272 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:38:48,274 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:38:48,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:38:48 BoogieIcfgContainer [2024-11-09 19:38:48,274 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:38:48,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:38:48,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:38:48,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:38:48,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:38:46" (1/3) ... [2024-11-09 19:38:48,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73105810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:38:48, skipping insertion in model container [2024-11-09 19:38:48,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:38:46" (2/3) ... [2024-11-09 19:38:48,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73105810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:38:48, skipping insertion in model container [2024-11-09 19:38:48,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:38:48" (3/3) ... [2024-11-09 19:38:48,281 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label42.c [2024-11-09 19:38:48,293 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:38:48,293 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:38:48,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:38:48,354 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;@e3b62f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:38:48,354 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:38:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 246 states have (on average 2.186991869918699) internal successors, (538), 247 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 19:38:48,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:48,367 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:48,368 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:48,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1696294594, now seen corresponding path program 1 times [2024-11-09 19:38:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:48,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007745531] [2024-11-09 19:38:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:48,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:38:48,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007745531] [2024-11-09 19:38:48,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007745531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:48,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:48,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:38:48,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111622693] [2024-11-09 19:38:48,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:48,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:38:48,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:48,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:38:48,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:38:48,781 INFO L87 Difference]: Start difference. First operand has 248 states, 246 states have (on average 2.186991869918699) internal successors, (538), 247 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:50,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:50,292 INFO L93 Difference]: Finished difference Result 859 states and 2019 transitions. [2024-11-09 19:38:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:38:50,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-11-09 19:38:50,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:50,305 INFO L225 Difference]: With dead ends: 859 [2024-11-09 19:38:50,305 INFO L226 Difference]: Without dead ends: 542 [2024-11-09 19:38:50,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:38:50,310 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 891 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:50,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 50 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 19:38:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-09 19:38:50,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-09 19:38:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 2.0720887245841033) internal successors, (1121), 541 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1121 transitions. [2024-11-09 19:38:50,374 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1121 transitions. Word has length 44 [2024-11-09 19:38:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:50,374 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 1121 transitions. [2024-11-09 19:38:50,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1121 transitions. [2024-11-09 19:38:50,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-09 19:38:50,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:50,380 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:50,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:38:50,381 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:50,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1859863570, now seen corresponding path program 1 times [2024-11-09 19:38:50,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:50,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497319658] [2024-11-09 19:38:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:50,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-09 19:38:50,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:50,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497319658] [2024-11-09 19:38:50,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497319658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:50,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:50,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:38:50,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943216512] [2024-11-09 19:38:50,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:50,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:50,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:50,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:50,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:50,529 INFO L87 Difference]: Start difference. First operand 542 states and 1121 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:51,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:51,235 INFO L93 Difference]: Finished difference Result 1082 states and 2342 transitions. [2024-11-09 19:38:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:51,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2024-11-09 19:38:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:51,238 INFO L225 Difference]: With dead ends: 1082 [2024-11-09 19:38:51,238 INFO L226 Difference]: Without dead ends: 721 [2024-11-09 19:38:51,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:51,240 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 239 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:51,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 60 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:38:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-09 19:38:51,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2024-11-09 19:38:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.9791666666666667) internal successors, (1425), 720 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1425 transitions. [2024-11-09 19:38:51,259 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1425 transitions. Word has length 194 [2024-11-09 19:38:51,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:51,260 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1425 transitions. [2024-11-09 19:38:51,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1425 transitions. [2024-11-09 19:38:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-09 19:38:51,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:51,263 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:38:51,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:38:51,263 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:51,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:51,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1193686986, now seen corresponding path program 1 times [2024-11-09 19:38:51,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:51,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170547526] [2024-11-09 19:38:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:51,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 19:38:51,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:51,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170547526] [2024-11-09 19:38:51,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170547526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:51,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:51,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:38:51,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944231813] [2024-11-09 19:38:51,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:51,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:38:51,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:51,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:38:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:38:51,595 INFO L87 Difference]: Start difference. First operand 721 states and 1425 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:52,410 INFO L93 Difference]: Finished difference Result 1652 states and 3299 transitions. [2024-11-09 19:38:52,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:38:52,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 217 [2024-11-09 19:38:52,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:52,414 INFO L225 Difference]: With dead ends: 1652 [2024-11-09 19:38:52,414 INFO L226 Difference]: Without dead ends: 1082 [2024-11-09 19:38:52,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:38:52,416 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 217 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:52,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 125 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:38:52,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2024-11-09 19:38:52,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1079. [2024-11-09 19:38:52,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.7755102040816326) internal successors, (1914), 1078 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1914 transitions. [2024-11-09 19:38:52,444 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1914 transitions. Word has length 217 [2024-11-09 19:38:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:52,444 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1914 transitions. [2024-11-09 19:38:52,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1914 transitions. [2024-11-09 19:38:52,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-09 19:38:52,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:52,448 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:52,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:38:52,448 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:52,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:52,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1236176480, now seen corresponding path program 1 times [2024-11-09 19:38:52,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:52,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84700035] [2024-11-09 19:38:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:52,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 254 proven. 102 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 19:38:52,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84700035] [2024-11-09 19:38:52,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84700035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794300084] [2024-11-09 19:38:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:52,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:52,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:52,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:53,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:38:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:53,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:53,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-09 19:38:53,229 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:53,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794300084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:53,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:53,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:38:53,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228522733] [2024-11-09 19:38:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:53,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:53,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:53,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:53,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:53,234 INFO L87 Difference]: Start difference. First operand 1079 states and 1914 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:53,852 INFO L93 Difference]: Finished difference Result 2514 states and 4559 transitions. [2024-11-09 19:38:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:53,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 349 [2024-11-09 19:38:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:53,858 INFO L225 Difference]: With dead ends: 2514 [2024-11-09 19:38:53,858 INFO L226 Difference]: Without dead ends: 1616 [2024-11-09 19:38:53,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:53,860 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 252 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:53,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 383 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:38:53,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2024-11-09 19:38:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1437. [2024-11-09 19:38:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 1.7688022284122562) internal successors, (2540), 1436 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2540 transitions. [2024-11-09 19:38:53,877 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2540 transitions. Word has length 349 [2024-11-09 19:38:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:53,877 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 2540 transitions. [2024-11-09 19:38:53,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2540 transitions. [2024-11-09 19:38:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-09 19:38:53,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:53,882 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:53,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:38:54,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:54,087 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:54,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:54,088 INFO L85 PathProgramCache]: Analyzing trace with hash -642794976, now seen corresponding path program 1 times [2024-11-09 19:38:54,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:54,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488867749] [2024-11-09 19:38:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:54,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 582 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-09 19:38:54,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:54,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488867749] [2024-11-09 19:38:54,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488867749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:54,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:54,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:38:54,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32988328] [2024-11-09 19:38:54,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:54,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:54,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:54,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:54,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:54,557 INFO L87 Difference]: Start difference. First operand 1437 states and 2540 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) [2024-11-09 19:38:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:55,161 INFO L93 Difference]: Finished difference Result 3230 states and 5811 transitions. [2024-11-09 19:38:55,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:55,162 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 449 [2024-11-09 19:38:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:55,167 INFO L225 Difference]: With dead ends: 3230 [2024-11-09 19:38:55,167 INFO L226 Difference]: Without dead ends: 1974 [2024-11-09 19:38:55,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:55,169 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 185 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:55,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 81 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:38:55,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-11-09 19:38:55,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1795. [2024-11-09 19:38:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 1.7630992196209587) internal successors, (3163), 1794 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3163 transitions. [2024-11-09 19:38:55,190 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3163 transitions. Word has length 449 [2024-11-09 19:38:55,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:55,191 INFO L471 AbstractCegarLoop]: Abstraction has 1795 states and 3163 transitions. [2024-11-09 19:38:55,191 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) [2024-11-09 19:38:55,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3163 transitions. [2024-11-09 19:38:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-11-09 19:38:55,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:55,197 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:55,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:38:55,197 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:55,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:55,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1105312472, now seen corresponding path program 1 times [2024-11-09 19:38:55,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:55,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540972406] [2024-11-09 19:38:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:55,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 544 proven. 23 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-09 19:38:55,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:55,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540972406] [2024-11-09 19:38:55,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540972406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:55,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470124243] [2024-11-09 19:38:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:55,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:55,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:55,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:55,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:38:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:55,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:55,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-11-09 19:38:55,776 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:55,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470124243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:55,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:55,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:38:55,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697438488] [2024-11-09 19:38:55,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:55,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:55,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:55,778 INFO L87 Difference]: Start difference. First operand 1795 states and 3163 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:56,495 INFO L93 Difference]: Finished difference Result 4125 states and 7352 transitions. [2024-11-09 19:38:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:56,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 473 [2024-11-09 19:38:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:56,504 INFO L225 Difference]: With dead ends: 4125 [2024-11-09 19:38:56,504 INFO L226 Difference]: Without dead ends: 2511 [2024-11-09 19:38:56,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:56,509 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 252 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:56,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 363 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:38:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2024-11-09 19:38:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2332. [2024-11-09 19:38:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2331 states have (on average 1.7571857571857572) internal successors, (4096), 2331 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 4096 transitions. [2024-11-09 19:38:56,557 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 4096 transitions. Word has length 473 [2024-11-09 19:38:56,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:56,559 INFO L471 AbstractCegarLoop]: Abstraction has 2332 states and 4096 transitions. [2024-11-09 19:38:56,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:56,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 4096 transitions. [2024-11-09 19:38:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-11-09 19:38:56,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:56,568 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:56,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 19:38:56,769 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,SelfDestructingSolverStorable5 [2024-11-09 19:38:56,769 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:56,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:56,772 INFO L85 PathProgramCache]: Analyzing trace with hash 296965904, now seen corresponding path program 1 times [2024-11-09 19:38:56,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:56,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314448406] [2024-11-09 19:38:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:56,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 582 proven. 23 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 19:38:57,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:57,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314448406] [2024-11-09 19:38:57,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314448406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:57,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352046968] [2024-11-09 19:38:57,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:57,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:57,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:57,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:57,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:38:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:57,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:57,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2024-11-09 19:38:57,539 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:57,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352046968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:57,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:57,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:38:57,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610573392] [2024-11-09 19:38:57,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:57,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:57,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:57,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:57,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:57,541 INFO L87 Difference]: Start difference. First operand 2332 states and 4096 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:58,107 INFO L93 Difference]: Finished difference Result 5020 states and 8923 transitions. [2024-11-09 19:38:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:58,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 492 [2024-11-09 19:38:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:58,116 INFO L225 Difference]: With dead ends: 5020 [2024-11-09 19:38:58,116 INFO L226 Difference]: Without dead ends: 2869 [2024-11-09 19:38:58,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:58,120 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 253 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:58,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 81 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:38:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2024-11-09 19:38:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2690. [2024-11-09 19:38:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2689 states have (on average 1.7753811825957606) internal successors, (4774), 2689 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 4774 transitions. [2024-11-09 19:38:58,162 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 4774 transitions. Word has length 492 [2024-11-09 19:38:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:58,162 INFO L471 AbstractCegarLoop]: Abstraction has 2690 states and 4774 transitions. [2024-11-09 19:38:58,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 4774 transitions. [2024-11-09 19:38:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-09 19:38:58,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:58,167 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:58,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:38:58,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:58,368 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:58,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1997864382, now seen corresponding path program 1 times [2024-11-09 19:38:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:58,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834147615] [2024-11-09 19:38:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 593 proven. 23 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 19:38:58,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:58,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834147615] [2024-11-09 19:38:58,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834147615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:58,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148370482] [2024-11-09 19:38:58,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:58,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:58,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:58,771 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:58,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:38:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:58,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:38:58,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 19:38:59,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:59,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148370482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:59,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:59,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:38:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358260847] [2024-11-09 19:38:59,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:59,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:38:59,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:59,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:38:59,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:59,487 INFO L87 Difference]: Start difference. First operand 2690 states and 4774 transitions. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:00,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:00,367 INFO L93 Difference]: Finished difference Result 5736 states and 10203 transitions. [2024-11-09 19:39:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:39:00,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 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 498 [2024-11-09 19:39:00,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:00,376 INFO L225 Difference]: With dead ends: 5736 [2024-11-09 19:39:00,376 INFO L226 Difference]: Without dead ends: 3048 [2024-11-09 19:39:00,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:39:00,380 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 362 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:00,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 54 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:39:00,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2024-11-09 19:39:00,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 3048. [2024-11-09 19:39:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 3047 states have (on average 1.7679684936002626) internal successors, (5387), 3047 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:00,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 5387 transitions. [2024-11-09 19:39:00,420 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 5387 transitions. Word has length 498 [2024-11-09 19:39:00,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:00,420 INFO L471 AbstractCegarLoop]: Abstraction has 3048 states and 5387 transitions. [2024-11-09 19:39:00,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 5387 transitions. [2024-11-09 19:39:00,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2024-11-09 19:39:00,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:00,425 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:00,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 19:39:00,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:39:00,630 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:00,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:00,631 INFO L85 PathProgramCache]: Analyzing trace with hash 802572636, now seen corresponding path program 1 times [2024-11-09 19:39:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:00,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174252367] [2024-11-09 19:39:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 768 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-09 19:39:01,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:01,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174252367] [2024-11-09 19:39:01,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174252367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:01,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:01,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:01,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702911321] [2024-11-09 19:39:01,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:01,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:39:01,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:01,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:39:01,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:39:01,052 INFO L87 Difference]: Start difference. First operand 3048 states and 5387 transitions. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:01,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:01,711 INFO L93 Difference]: Finished difference Result 5945 states and 10509 transitions. [2024-11-09 19:39:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:39:01,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 555 [2024-11-09 19:39:01,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:01,719 INFO L225 Difference]: With dead ends: 5945 [2024-11-09 19:39:01,719 INFO L226 Difference]: Without dead ends: 3048 [2024-11-09 19:39:01,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:39:01,722 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 254 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:01,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 23 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:39:01,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2024-11-09 19:39:01,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 3048. [2024-11-09 19:39:01,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 3047 states have (on average 1.7256317689530687) internal successors, (5258), 3047 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 5258 transitions. [2024-11-09 19:39:01,794 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 5258 transitions. Word has length 555 [2024-11-09 19:39:01,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:01,794 INFO L471 AbstractCegarLoop]: Abstraction has 3048 states and 5258 transitions. [2024-11-09 19:39:01,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 5258 transitions. [2024-11-09 19:39:01,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2024-11-09 19:39:01,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:01,801 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:01,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:39:01,802 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:01,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1145538282, now seen corresponding path program 1 times [2024-11-09 19:39:01,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:01,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710357451] [2024-11-09 19:39:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:01,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 898 proven. 11 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2024-11-09 19:39:02,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710357451] [2024-11-09 19:39:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710357451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:39:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476061271] [2024-11-09 19:39:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:02,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:39:02,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:39:02,239 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:39:02,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 19:39:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:02,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:39:02,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:39:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2024-11-09 19:39:02,741 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:39:02,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476061271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:02,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:39:02,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 19:39:02,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339819597] [2024-11-09 19:39:02,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:02,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:02,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:02,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:02,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:39:02,743 INFO L87 Difference]: Start difference. First operand 3048 states and 5258 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:03,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:03,257 INFO L93 Difference]: Finished difference Result 6810 states and 11756 transitions. [2024-11-09 19:39:03,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:03,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 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 581 [2024-11-09 19:39:03,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:03,267 INFO L225 Difference]: With dead ends: 6810 [2024-11-09 19:39:03,267 INFO L226 Difference]: Without dead ends: 3943 [2024-11-09 19:39:03,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:39:03,269 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 191 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:03,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 53 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:39:03,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2024-11-09 19:39:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3585. [2024-11-09 19:39:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 1.72265625) internal successors, (6174), 3584 states have internal predecessors, (6174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6174 transitions. [2024-11-09 19:39:03,306 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6174 transitions. Word has length 581 [2024-11-09 19:39:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:03,307 INFO L471 AbstractCegarLoop]: Abstraction has 3585 states and 6174 transitions. [2024-11-09 19:39:03,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6174 transitions. [2024-11-09 19:39:03,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2024-11-09 19:39:03,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:03,312 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:03,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 19:39:03,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 19:39:03,517 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:03,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:03,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1408997850, now seen corresponding path program 1 times [2024-11-09 19:39:03,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:03,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555535788] [2024-11-09 19:39:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:03,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 1153 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-09 19:39:03,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:03,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555535788] [2024-11-09 19:39:03,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555535788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:03,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:03,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:03,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697076310] [2024-11-09 19:39:03,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:03,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:03,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:03,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:03,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:03,844 INFO L87 Difference]: Start difference. First operand 3585 states and 6174 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:04,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:04,381 INFO L93 Difference]: Finished difference Result 6989 states and 12053 transitions. [2024-11-09 19:39:04,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:04,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 658 [2024-11-09 19:39:04,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:04,390 INFO L225 Difference]: With dead ends: 6989 [2024-11-09 19:39:04,390 INFO L226 Difference]: Without dead ends: 3585 [2024-11-09 19:39:04,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:04,393 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 229 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:04,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 341 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:39:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2024-11-09 19:39:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3048. [2024-11-09 19:39:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 3047 states have (on average 1.7105349524122087) internal successors, (5212), 3047 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 5212 transitions. [2024-11-09 19:39:04,422 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 5212 transitions. Word has length 658 [2024-11-09 19:39:04,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:04,423 INFO L471 AbstractCegarLoop]: Abstraction has 3048 states and 5212 transitions. [2024-11-09 19:39:04,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:04,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 5212 transitions. [2024-11-09 19:39:04,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2024-11-09 19:39:04,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:04,452 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:04,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:39:04,452 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:04,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:04,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2102952574, now seen corresponding path program 1 times [2024-11-09 19:39:04,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:04,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374059222] [2024-11-09 19:39:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:04,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:04,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1851 backedges. 1344 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-09 19:39:04,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:04,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374059222] [2024-11-09 19:39:04,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374059222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:04,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:04,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:04,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191187237] [2024-11-09 19:39:04,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:04,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:04,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:04,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:04,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:04,785 INFO L87 Difference]: Start difference. First operand 3048 states and 5212 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:05,333 INFO L93 Difference]: Finished difference Result 7168 states and 12286 transitions. [2024-11-09 19:39:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:05,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 699 [2024-11-09 19:39:05,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:05,340 INFO L225 Difference]: With dead ends: 7168 [2024-11-09 19:39:05,340 INFO L226 Difference]: Without dead ends: 4301 [2024-11-09 19:39:05,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:05,343 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 187 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:05,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 53 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:39:05,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2024-11-09 19:39:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 4301. [2024-11-09 19:39:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4301 states, 4300 states have (on average 1.703953488372093) internal successors, (7327), 4300 states have internal predecessors, (7327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 7327 transitions. [2024-11-09 19:39:05,384 INFO L78 Accepts]: Start accepts. Automaton has 4301 states and 7327 transitions. Word has length 699 [2024-11-09 19:39:05,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:05,385 INFO L471 AbstractCegarLoop]: Abstraction has 4301 states and 7327 transitions. [2024-11-09 19:39:05,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4301 states and 7327 transitions. [2024-11-09 19:39:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2024-11-09 19:39:05,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:05,390 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:05,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:39:05,391 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:05,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1279617250, now seen corresponding path program 1 times [2024-11-09 19:39:05,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:05,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679431236] [2024-11-09 19:39:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:05,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1653 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-09 19:39:05,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:05,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679431236] [2024-11-09 19:39:05,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679431236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:05,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:05,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:39:05,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332012960] [2024-11-09 19:39:05,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:05,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:39:05,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:05,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:39:05,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:39:05,890 INFO L87 Difference]: Start difference. First operand 4301 states and 7327 transitions. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:06,713 INFO L93 Difference]: Finished difference Result 8600 states and 14652 transitions. [2024-11-09 19:39:06,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:39:06,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 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 736 [2024-11-09 19:39:06,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:06,721 INFO L225 Difference]: With dead ends: 8600 [2024-11-09 19:39:06,721 INFO L226 Difference]: Without dead ends: 4480 [2024-11-09 19:39:06,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:39:06,725 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 442 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:06,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 73 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:39:06,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2024-11-09 19:39:06,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 4122. [2024-11-09 19:39:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 4121 states have (on average 1.7008007765105557) internal successors, (7009), 4121 states have internal predecessors, (7009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 7009 transitions. [2024-11-09 19:39:06,772 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 7009 transitions. Word has length 736 [2024-11-09 19:39:06,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:06,772 INFO L471 AbstractCegarLoop]: Abstraction has 4122 states and 7009 transitions. [2024-11-09 19:39:06,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 7009 transitions. [2024-11-09 19:39:06,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2024-11-09 19:39:06,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:06,779 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:06,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:39:06,779 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:06,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:06,780 INFO L85 PathProgramCache]: Analyzing trace with hash -135181364, now seen corresponding path program 1 times [2024-11-09 19:39:06,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:06,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527101943] [2024-11-09 19:39:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:06,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2314 backedges. 1481 proven. 0 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2024-11-09 19:39:07,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:07,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527101943] [2024-11-09 19:39:07,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527101943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:07,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:07,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:07,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333025923] [2024-11-09 19:39:07,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:07,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:07,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:07,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:07,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:07,196 INFO L87 Difference]: Start difference. First operand 4122 states and 7009 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:07,685 INFO L93 Difference]: Finished difference Result 8063 states and 13723 transitions. [2024-11-09 19:39:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:07,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 814 [2024-11-09 19:39:07,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:07,696 INFO L225 Difference]: With dead ends: 8063 [2024-11-09 19:39:07,697 INFO L226 Difference]: Without dead ends: 4122 [2024-11-09 19:39:07,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:07,699 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 223 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:07,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 345 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 19:39:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2024-11-09 19:39:07,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3943. [2024-11-09 19:39:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3943 states, 3942 states have (on average 1.6884830035514966) internal successors, (6656), 3942 states have internal predecessors, (6656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 6656 transitions. [2024-11-09 19:39:07,735 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 6656 transitions. Word has length 814 [2024-11-09 19:39:07,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:07,735 INFO L471 AbstractCegarLoop]: Abstraction has 3943 states and 6656 transitions. [2024-11-09 19:39:07,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 6656 transitions. [2024-11-09 19:39:07,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2024-11-09 19:39:07,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:07,742 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:07,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:39:07,742 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:07,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:07,743 INFO L85 PathProgramCache]: Analyzing trace with hash 230237136, now seen corresponding path program 1 times [2024-11-09 19:39:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:07,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037666569] [2024-11-09 19:39:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:07,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2546 backedges. 1928 proven. 111 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-09 19:39:08,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:08,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037666569] [2024-11-09 19:39:08,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037666569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:39:08,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814402266] [2024-11-09 19:39:08,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:08,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:39:08,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:39:08,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:39:08,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 19:39:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:08,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:39:08,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:39:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2546 backedges. 1928 proven. 111 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-09 19:39:08,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:39:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2546 backedges. 1928 proven. 111 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-09 19:39:09,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814402266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:39:09,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:39:09,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-09 19:39:09,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264033216] [2024-11-09 19:39:09,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:39:09,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 19:39:09,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:09,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 19:39:09,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:39:09,101 INFO L87 Difference]: Start difference. First operand 3943 states and 6656 transitions. Second operand has 6 states, 6 states have (on average 127.66666666666667) internal successors, (766), 6 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:10,176 INFO L93 Difference]: Finished difference Result 9853 states and 16652 transitions. [2024-11-09 19:39:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 19:39:10,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 127.66666666666667) internal successors, (766), 6 states have internal predecessors, (766), 0 states have call successors, (0), 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 855 [2024-11-09 19:39:10,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:10,185 INFO L225 Difference]: With dead ends: 9853 [2024-11-09 19:39:10,185 INFO L226 Difference]: Without dead ends: 6091 [2024-11-09 19:39:10,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1712 GetRequests, 1708 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:39:10,189 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 834 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:10,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 69 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:39:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6091 states. [2024-11-09 19:39:10,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6091 to 5017. [2024-11-09 19:39:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 5016 states have (on average 1.6858054226475279) internal successors, (8456), 5016 states have internal predecessors, (8456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 8456 transitions. [2024-11-09 19:39:10,238 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 8456 transitions. Word has length 855 [2024-11-09 19:39:10,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:10,239 INFO L471 AbstractCegarLoop]: Abstraction has 5017 states and 8456 transitions. [2024-11-09 19:39:10,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.66666666666667) internal successors, (766), 6 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:10,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 8456 transitions. [2024-11-09 19:39:10,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2024-11-09 19:39:10,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:10,246 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:10,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 19:39:10,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 19:39:10,447 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:10,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash -32044696, now seen corresponding path program 1 times [2024-11-09 19:39:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:10,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451031602] [2024-11-09 19:39:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:10,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3124 backedges. 1552 proven. 0 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2024-11-09 19:39:11,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:11,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451031602] [2024-11-09 19:39:11,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451031602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:11,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:11,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 19:39:11,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961685221] [2024-11-09 19:39:11,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:11,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 19:39:11,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 19:39:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:39:11,084 INFO L87 Difference]: Start difference. First operand 5017 states and 8456 transitions. Second operand has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:11,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:11,750 INFO L93 Difference]: Finished difference Result 9955 states and 16719 transitions. [2024-11-09 19:39:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 19:39:11,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 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 984 [2024-11-09 19:39:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:11,757 INFO L225 Difference]: With dead ends: 9955 [2024-11-09 19:39:11,757 INFO L226 Difference]: Without dead ends: 5017 [2024-11-09 19:39:11,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:39:11,760 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 170 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:11,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 27 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:39:11,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5017 states. [2024-11-09 19:39:11,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5017 to 4659. [2024-11-09 19:39:11,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 4658 states have (on average 1.6749677973379133) internal successors, (7802), 4658 states have internal predecessors, (7802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 7802 transitions. [2024-11-09 19:39:11,799 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 7802 transitions. Word has length 984 [2024-11-09 19:39:11,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:11,799 INFO L471 AbstractCegarLoop]: Abstraction has 4659 states and 7802 transitions. [2024-11-09 19:39:11,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:11,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 7802 transitions. [2024-11-09 19:39:11,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2024-11-09 19:39:11,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:11,850 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:11,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:39:11,850 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:11,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:11,851 INFO L85 PathProgramCache]: Analyzing trace with hash 327071320, now seen corresponding path program 1 times [2024-11-09 19:39:11,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:11,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849921362] [2024-11-09 19:39:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:11,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3117 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2024-11-09 19:39:12,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:12,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849921362] [2024-11-09 19:39:12,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849921362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:12,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:12,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:12,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356480980] [2024-11-09 19:39:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:12,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:39:12,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:12,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:39:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:39:12,512 INFO L87 Difference]: Start difference. First operand 4659 states and 7802 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:13,188 INFO L93 Difference]: Finished difference Result 8979 states and 15033 transitions. [2024-11-09 19:39:13,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:39:13,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 1044 [2024-11-09 19:39:13,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:13,194 INFO L225 Difference]: With dead ends: 8979 [2024-11-09 19:39:13,194 INFO L226 Difference]: Without dead ends: 4480 [2024-11-09 19:39:13,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:39:13,197 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 154 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:13,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 23 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:39:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2024-11-09 19:39:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 4480. [2024-11-09 19:39:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4479 states have (on average 1.6747041750390712) internal successors, (7501), 4479 states have internal predecessors, (7501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 7501 transitions. [2024-11-09 19:39:13,233 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 7501 transitions. Word has length 1044 [2024-11-09 19:39:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:13,233 INFO L471 AbstractCegarLoop]: Abstraction has 4480 states and 7501 transitions. [2024-11-09 19:39:13,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 7501 transitions. [2024-11-09 19:39:13,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2024-11-09 19:39:13,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:13,240 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:13,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:39:13,241 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:13,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash 296482646, now seen corresponding path program 1 times [2024-11-09 19:39:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:13,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333913769] [2024-11-09 19:39:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3628 backedges. 1131 proven. 0 refuted. 0 times theorem prover too weak. 2497 trivial. 0 not checked. [2024-11-09 19:39:13,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:13,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333913769] [2024-11-09 19:39:13,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333913769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:13,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:13,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:13,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165009966] [2024-11-09 19:39:13,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:13,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:13,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:13,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:13,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:13,662 INFO L87 Difference]: Start difference. First operand 4480 states and 7501 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:14,209 INFO L93 Difference]: Finished difference Result 9492 states and 15913 transitions. [2024-11-09 19:39:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:14,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 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 1056 [2024-11-09 19:39:14,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:14,211 INFO L225 Difference]: With dead ends: 9492 [2024-11-09 19:39:14,211 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 19:39:14,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:14,217 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 189 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:14,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 335 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:39:14,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 19:39:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 19:39:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 19:39:14,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1056 [2024-11-09 19:39:14,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:14,219 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 19:39:14,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 19:39:14,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 19:39:14,222 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 19:39:14,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 19:39:14,225 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:14,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 19:39:14,700 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 19:39:14,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:39:14 BoogieIcfgContainer [2024-11-09 19:39:14,710 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 19:39:14,710 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 19:39:14,710 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 19:39:14,710 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 19:39:14,711 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:38:48" (3/4) ... [2024-11-09 19:39:14,713 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-09 19:39:14,728 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-09 19:39:14,729 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 19:39:14,730 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 19:39:14,731 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 19:39:14,862 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 19:39:14,863 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 19:39:14,863 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 19:39:14,864 INFO L158 Benchmark]: Toolchain (without parser) took 28538.98ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 926.9MB). Free memory was 116.9MB in the beginning and 820.9MB in the end (delta: -704.0MB). Peak memory consumption was 224.5MB. Max. memory is 16.1GB. [2024-11-09 19:39:14,864 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 188.7MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 19:39:14,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.70ms. Allocated memory is still 188.7MB. Free memory was 116.7MB in the beginning and 153.9MB in the end (delta: -37.2MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2024-11-09 19:39:14,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.64ms. Allocated memory is still 188.7MB. Free memory was 153.9MB in the beginning and 144.3MB in the end (delta: 9.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 19:39:14,865 INFO L158 Benchmark]: Boogie Preprocessor took 86.22ms. Allocated memory is still 188.7MB. Free memory was 144.3MB in the beginning and 131.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 19:39:14,866 INFO L158 Benchmark]: IcfgBuilder took 1180.00ms. Allocated memory is still 188.7MB. Free memory was 131.9MB in the beginning and 77.0MB in the end (delta: 54.9MB). Peak memory consumption was 84.1MB. Max. memory is 16.1GB. [2024-11-09 19:39:14,868 INFO L158 Benchmark]: TraceAbstraction took 26433.56ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 926.9MB). Free memory was 77.0MB in the beginning and 837.7MB in the end (delta: -760.7MB). Peak memory consumption was 166.3MB. Max. memory is 16.1GB. [2024-11-09 19:39:14,868 INFO L158 Benchmark]: Witness Printer took 153.12ms. Allocated memory is still 1.1GB. Free memory was 837.7MB in the beginning and 820.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 19:39:14,869 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 188.7MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 577.70ms. Allocated memory is still 188.7MB. Free memory was 116.7MB in the beginning and 153.9MB in the end (delta: -37.2MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.64ms. Allocated memory is still 188.7MB. Free memory was 153.9MB in the beginning and 144.3MB in the end (delta: 9.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.22ms. Allocated memory is still 188.7MB. Free memory was 144.3MB in the beginning and 131.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * IcfgBuilder took 1180.00ms. Allocated memory is still 188.7MB. Free memory was 131.9MB in the beginning and 77.0MB in the end (delta: 54.9MB). Peak memory consumption was 84.1MB. Max. memory is 16.1GB. * TraceAbstraction took 26433.56ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 926.9MB). Free memory was 77.0MB in the beginning and 837.7MB in the end (delta: -760.7MB). Peak memory consumption was 166.3MB. Max. memory is 16.1GB. * Witness Printer took 153.12ms. Allocated memory is still 1.1GB. Free memory was 837.7MB in the beginning and 820.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 140]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 248 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.9s, OverallIterations: 18, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5524 SdHoareTripleChecker+Valid, 12.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5524 mSDsluCounter, 2539 SdHoareTripleChecker+Invalid, 10.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 158 mSDsCounter, 1441 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15477 IncrementalHoareTripleChecker+Invalid, 16918 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1441 mSolverCounterUnsat, 2381 mSDtfsCounter, 15477 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4161 GetRequests, 4113 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5017occurred in iteration=15, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 18 MinimizatonAttempts, 3583 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 13946 NumberOfCodeBlocks, 13946 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 14776 ConstructedInterpolants, 0 QuantifiedInterpolants, 39799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4128 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 25 InterpolantComputations, 17 PerfectInterpolantSequences, 35185/35700 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-09 19:39:14,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE