./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label01.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 a4e6e263a6fe01660f2ecabfa1a654296517a773a2b8a9b458da8809aa3aafd8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 22:29:46,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 22:29:46,137 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 22:29:46,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 22:29:46,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 22:29:46,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 22:29:46,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 22:29:46,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 22:29:46,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 22:29:46,183 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 22:29:46,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 22:29:46,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 22:29:46,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 22:29:46,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 22:29:46,184 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 22:29:46,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 22:29:46,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 22:29:46,187 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 22:29:46,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 22:29:46,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 22:29:46,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 22:29:46,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 22:29:46,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 22:29:46,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 22:29:46,189 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 22:29:46,189 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 22:29:46,190 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 22:29:46,190 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 22:29:46,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 22:29:46,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 22:29:46,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 22:29:46,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 22:29:46,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:29:46,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 22:29:46,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 22:29:46,192 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 22:29:46,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 22:29:46,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 22:29:46,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 22:29:46,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 22:29:46,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 22:29:46,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 22:29:46,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4e6e263a6fe01660f2ecabfa1a654296517a773a2b8a9b458da8809aa3aafd8 [2024-11-21 22:29:46,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 22:29:46,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 22:29:46,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 22:29:46,476 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 22:29:46,476 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 22:29:46,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label01.c [2024-11-21 22:29:47,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 22:29:48,279 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 22:29:48,281 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label01.c [2024-11-21 22:29:48,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a16710642/5792b5834c96434c9a151de43a35abfa/FLAG386a93d03 [2024-11-21 22:29:48,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a16710642/5792b5834c96434c9a151de43a35abfa [2024-11-21 22:29:48,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 22:29:48,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 22:29:48,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 22:29:48,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 22:29:48,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 22:29:48,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:29:48" (1/1) ... [2024-11-21 22:29:48,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466c4bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:48, skipping insertion in model container [2024-11-21 22:29:48,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:29:48" (1/1) ... [2024-11-21 22:29:48,440 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 22:29:48,711 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/Problem17_label01.c[6877,6890] [2024-11-21 22:29:49,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:29:49,182 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 22:29:49,212 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/Problem17_label01.c[6877,6890] [2024-11-21 22:29:49,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:29:49,511 INFO L204 MainTranslator]: Completed translation [2024-11-21 22:29:49,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49 WrapperNode [2024-11-21 22:29:49,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 22:29:49,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 22:29:49,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 22:29:49,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 22:29:49,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:49,564 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:49,791 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-21 22:29:49,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 22:29:49,792 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 22:29:49,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 22:29:49,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 22:29:49,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:49,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:49,935 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:50,069 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]. [2024-11-21 22:29:50,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:50,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:50,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:50,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:50,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:50,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:50,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 22:29:50,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 22:29:50,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 22:29:50,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 22:29:50,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (1/1) ... [2024-11-21 22:29:50,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:29:50,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:29:50,352 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) [2024-11-21 22:29:50,354 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 [2024-11-21 22:29:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 22:29:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 22:29:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 22:29:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 22:29:50,465 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 22:29:50,467 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 22:29:53,642 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-21 22:29:53,643 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 22:29:53,677 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 22:29:53,683 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 22:29:53,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:29:53 BoogieIcfgContainer [2024-11-21 22:29:53,683 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 22:29:53,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 22:29:53,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 22:29:53,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 22:29:53,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:29:48" (1/3) ... [2024-11-21 22:29:53,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375c4614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:29:53, skipping insertion in model container [2024-11-21 22:29:53,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:49" (2/3) ... [2024-11-21 22:29:53,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375c4614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:29:53, skipping insertion in model container [2024-11-21 22:29:53,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:29:53" (3/3) ... [2024-11-21 22:29:53,692 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label01.c [2024-11-21 22:29:53,709 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 22:29:53,709 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 22:29:53,787 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 22:29:53,793 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;@5d360435, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 22:29:53,794 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 22:29:53,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:29:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-21 22:29:53,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:29:53,809 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:29:53,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:29:53,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:29:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash 291089130, now seen corresponding path program 1 times [2024-11-21 22:29:53,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:29:53,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108443954] [2024-11-21 22:29:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:29:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:29:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:29:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:29:54,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:29:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108443954] [2024-11-21 22:29:54,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108443954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:29:54,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:29:54,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:29:54,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192740804] [2024-11-21 22:29:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:29:54,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:29:54,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:29:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:29:54,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:29:54,226 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:29:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:29:56,504 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2024-11-21 22:29:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:29:56,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-21 22:29:56,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:29:56,525 INFO L225 Difference]: With dead ends: 1644 [2024-11-21 22:29:56,525 INFO L226 Difference]: Without dead ends: 977 [2024-11-21 22:29:56,529 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 [2024-11-21 22:29:56,532 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 442 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:29:56,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-21 22:29:56,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-21 22:29:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2024-11-21 22:29:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:29:56,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2024-11-21 22:29:56,620 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 46 [2024-11-21 22:29:56,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:29:56,621 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2024-11-21 22:29:56,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:29:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2024-11-21 22:29:56,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-21 22:29:56,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:29:56,625 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:29:56,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 22:29:56,626 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:29:56,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:29:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash 63229666, now seen corresponding path program 1 times [2024-11-21 22:29:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:29:56,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087166407] [2024-11-21 22:29:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:29:56,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:29:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:29:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:29:56,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:29:56,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087166407] [2024-11-21 22:29:56,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087166407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:29:56,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:29:56,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:29:56,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365785979] [2024-11-21 22:29:56,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:29:56,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:29:56,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:29:56,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:29:56,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:29:56,926 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:29:59,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:29:59,053 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2024-11-21 22:29:59,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:29:59,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-21 22:29:59,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:29:59,061 INFO L225 Difference]: With dead ends: 2813 [2024-11-21 22:29:59,062 INFO L226 Difference]: Without dead ends: 1844 [2024-11-21 22:29:59,064 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 [2024-11-21 22:29:59,065 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:29:59,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-21 22:29:59,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-21 22:29:59,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2024-11-21 22:29:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:29:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2024-11-21 22:29:59,103 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 113 [2024-11-21 22:29:59,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:29:59,105 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2024-11-21 22:29:59,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:29:59,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2024-11-21 22:29:59,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-21 22:29:59,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:29:59,110 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:29:59,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 22:29:59,114 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:29:59,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:29:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1486088630, now seen corresponding path program 1 times [2024-11-21 22:29:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:29:59,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128829287] [2024-11-21 22:29:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:29:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:29:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:29:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:29:59,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:29:59,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128829287] [2024-11-21 22:29:59,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128829287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:29:59,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:29:59,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:29:59,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203220809] [2024-11-21 22:29:59,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:29:59,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:29:59,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:29:59,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:29:59,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:29:59,478 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:02,566 INFO L93 Difference]: Finished difference Result 6765 states and 9258 transitions. [2024-11-21 22:30:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:30:02,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2024-11-21 22:30:02,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:02,587 INFO L225 Difference]: With dead ends: 6765 [2024-11-21 22:30:02,587 INFO L226 Difference]: Without dead ends: 4926 [2024-11-21 22:30:02,592 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 [2024-11-21 22:30:02,595 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 866 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 3383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:02,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 329 Invalid, 3383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-21 22:30:02,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2024-11-21 22:30:02,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 4875. [2024-11-21 22:30:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 4874 states have (on average 1.286417726713172) internal successors, (6270), 4874 states have internal predecessors, (6270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 6270 transitions. [2024-11-21 22:30:02,716 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 6270 transitions. Word has length 116 [2024-11-21 22:30:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:02,718 INFO L471 AbstractCegarLoop]: Abstraction has 4875 states and 6270 transitions. [2024-11-21 22:30:02,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 6270 transitions. [2024-11-21 22:30:02,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-21 22:30:02,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:02,721 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2024-11-21 22:30:02,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 22:30:02,721 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:02,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:02,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1454031604, now seen corresponding path program 1 times [2024-11-21 22:30:02,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:02,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039848904] [2024-11-21 22:30:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:02,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-21 22:30:02,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:02,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039848904] [2024-11-21 22:30:02,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039848904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:30:02,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:30:02,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:30:02,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372182719] [2024-11-21 22:30:02,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:02,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:30:02,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:02,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:30:02,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:30:02,918 INFO L87 Difference]: Start difference. First operand 4875 states and 6270 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:04,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:04,460 INFO L93 Difference]: Finished difference Result 14436 states and 18541 transitions. [2024-11-21 22:30:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:30:04,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2024-11-21 22:30:04,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:04,489 INFO L225 Difference]: With dead ends: 14436 [2024-11-21 22:30:04,489 INFO L226 Difference]: Without dead ends: 8277 [2024-11-21 22:30:04,498 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 [2024-11-21 22:30:04,500 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:04,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 590 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-21 22:30:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2024-11-21 22:30:04,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 6147. [2024-11-21 22:30:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6147 states, 6146 states have (on average 1.1906931337455255) internal successors, (7318), 6146 states have internal predecessors, (7318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 7318 transitions. [2024-11-21 22:30:04,672 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 7318 transitions. Word has length 187 [2024-11-21 22:30:04,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:04,674 INFO L471 AbstractCegarLoop]: Abstraction has 6147 states and 7318 transitions. [2024-11-21 22:30:04,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:04,674 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 7318 transitions. [2024-11-21 22:30:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-21 22:30:04,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:04,677 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2024-11-21 22:30:04,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 22:30:04,678 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:04,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:04,679 INFO L85 PathProgramCache]: Analyzing trace with hash 877442312, now seen corresponding path program 1 times [2024-11-21 22:30:04,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:04,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56726223] [2024-11-21 22:30:04,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:04,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-21 22:30:04,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:04,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56726223] [2024-11-21 22:30:04,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56726223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:30:04,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:30:04,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:30:04,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832736321] [2024-11-21 22:30:04,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:04,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:30:04,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:04,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:30:04,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:30:04,932 INFO L87 Difference]: Start difference. First operand 6147 states and 7318 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:06,647 INFO L93 Difference]: Finished difference Result 15692 states and 18897 transitions. [2024-11-21 22:30:06,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:30:06,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 200 [2024-11-21 22:30:06,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:06,675 INFO L225 Difference]: With dead ends: 15692 [2024-11-21 22:30:06,675 INFO L226 Difference]: Without dead ends: 9547 [2024-11-21 22:30:06,684 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 [2024-11-21 22:30:06,685 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 414 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:06,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 477 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-21 22:30:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9547 states. [2024-11-21 22:30:06,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9547 to 6124. [2024-11-21 22:30:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6124 states, 6123 states have (on average 1.1894496162012085) internal successors, (7283), 6123 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 7283 transitions. [2024-11-21 22:30:06,805 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 7283 transitions. Word has length 200 [2024-11-21 22:30:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:06,805 INFO L471 AbstractCegarLoop]: Abstraction has 6124 states and 7283 transitions. [2024-11-21 22:30:06,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 7283 transitions. [2024-11-21 22:30:06,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-21 22:30:06,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:06,808 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-21 22:30:06,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 22:30:06,809 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:06,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1977830355, now seen corresponding path program 1 times [2024-11-21 22:30:06,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:06,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389234060] [2024-11-21 22:30:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:30:07,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:07,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389234060] [2024-11-21 22:30:07,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389234060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:30:07,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:30:07,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:30:07,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299346814] [2024-11-21 22:30:07,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:07,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:30:07,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:07,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:30:07,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:30:07,045 INFO L87 Difference]: Start difference. First operand 6124 states and 7283 transitions. Second operand has 3 states, 3 states have (on average 69.0) 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) [2024-11-21 22:30:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:08,575 INFO L93 Difference]: Finished difference Result 16078 states and 19444 transitions. [2024-11-21 22:30:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:30:08,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) 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 207 [2024-11-21 22:30:08,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:08,600 INFO L225 Difference]: With dead ends: 16078 [2024-11-21 22:30:08,600 INFO L226 Difference]: Without dead ends: 9956 [2024-11-21 22:30:08,608 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 [2024-11-21 22:30:08,609 INFO L432 NwaCegarLoop]: 734 mSDtfsCounter, 487 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:08,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 788 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-21 22:30:08,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9956 states. [2024-11-21 22:30:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9956 to 9956. [2024-11-21 22:30:08,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9956 states, 9955 states have (on average 1.171672526368659) internal successors, (11664), 9955 states have internal predecessors, (11664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9956 states to 9956 states and 11664 transitions. [2024-11-21 22:30:08,754 INFO L78 Accepts]: Start accepts. Automaton has 9956 states and 11664 transitions. Word has length 207 [2024-11-21 22:30:08,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:08,754 INFO L471 AbstractCegarLoop]: Abstraction has 9956 states and 11664 transitions. [2024-11-21 22:30:08,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) 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) [2024-11-21 22:30:08,755 INFO L276 IsEmpty]: Start isEmpty. Operand 9956 states and 11664 transitions. [2024-11-21 22:30:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-21 22:30:08,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:08,760 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:30:08,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 22:30:08,760 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:08,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:08,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1969648980, now seen corresponding path program 1 times [2024-11-21 22:30:08,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:08,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123289053] [2024-11-21 22:30:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:08,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 226 proven. 70 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-21 22:30:09,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123289053] [2024-11-21 22:30:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123289053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:30:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816098244] [2024-11-21 22:30:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:09,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:30:09,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:30:09,196 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) [2024-11-21 22:30:09,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 22:30:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:09,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 22:30:09,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:30:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 226 proven. 70 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-21 22:30:09,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:30:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-21 22:30:09,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816098244] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:30:09,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:30:09,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-21 22:30:09,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961479647] [2024-11-21 22:30:09,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:09,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:30:09,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:09,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:30:09,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:30:09,884 INFO L87 Difference]: Start difference. First operand 9956 states and 11664 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:12,667 INFO L93 Difference]: Finished difference Result 30575 states and 36167 transitions. [2024-11-21 22:30:12,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:30:12,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 270 [2024-11-21 22:30:12,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:12,701 INFO L225 Difference]: With dead ends: 30575 [2024-11-21 22:30:12,701 INFO L226 Difference]: Without dead ends: 19763 [2024-11-21 22:30:12,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:30:12,714 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 889 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:12,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 162 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-21 22:30:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19763 states. [2024-11-21 22:30:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19763 to 19760. [2024-11-21 22:30:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19760 states, 19759 states have (on average 1.1599777316665822) internal successors, (22920), 19759 states have internal predecessors, (22920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:12,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19760 states to 19760 states and 22920 transitions. [2024-11-21 22:30:12,964 INFO L78 Accepts]: Start accepts. Automaton has 19760 states and 22920 transitions. Word has length 270 [2024-11-21 22:30:12,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:12,964 INFO L471 AbstractCegarLoop]: Abstraction has 19760 states and 22920 transitions. [2024-11-21 22:30:12,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 19760 states and 22920 transitions. [2024-11-21 22:30:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-21 22:30:12,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:12,969 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:30:12,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 22:30:13,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:30:13,171 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:13,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:13,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2103078840, now seen corresponding path program 1 times [2024-11-21 22:30:13,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:13,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566177352] [2024-11-21 22:30:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:13,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 22:30:13,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:13,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566177352] [2024-11-21 22:30:13,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566177352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:30:13,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:30:13,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:30:13,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133392152] [2024-11-21 22:30:13,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:13,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:30:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:13,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:30:13,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:30:13,408 INFO L87 Difference]: Start difference. First operand 19760 states and 22920 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:15,356 INFO L93 Difference]: Finished difference Result 42909 states and 49989 transitions. [2024-11-21 22:30:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:30:15,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 283 [2024-11-21 22:30:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:15,407 INFO L225 Difference]: With dead ends: 42909 [2024-11-21 22:30:15,407 INFO L226 Difference]: Without dead ends: 23151 [2024-11-21 22:30:15,431 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 [2024-11-21 22:30:15,432 INFO L432 NwaCegarLoop]: 826 mSDtfsCounter, 374 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:15,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 896 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-21 22:30:15,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23151 states. [2024-11-21 22:30:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23151 to 22725. [2024-11-21 22:30:15,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22725 states, 22724 states have (on average 1.1456169688435134) internal successors, (26033), 22724 states have internal predecessors, (26033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22725 states to 22725 states and 26033 transitions. [2024-11-21 22:30:15,715 INFO L78 Accepts]: Start accepts. Automaton has 22725 states and 26033 transitions. Word has length 283 [2024-11-21 22:30:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:15,715 INFO L471 AbstractCegarLoop]: Abstraction has 22725 states and 26033 transitions. [2024-11-21 22:30:15,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:15,716 INFO L276 IsEmpty]: Start isEmpty. Operand 22725 states and 26033 transitions. [2024-11-21 22:30:15,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-21 22:30:15,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:15,724 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:30:15,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 22:30:15,724 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:15,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:15,725 INFO L85 PathProgramCache]: Analyzing trace with hash 505503923, now seen corresponding path program 1 times [2024-11-21 22:30:15,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:15,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770194700] [2024-11-21 22:30:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:15,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-21 22:30:16,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:16,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770194700] [2024-11-21 22:30:16,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770194700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:30:16,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:30:16,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:30:16,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571597441] [2024-11-21 22:30:16,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:16,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:30:16,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:16,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:30:16,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:30:16,260 INFO L87 Difference]: Start difference. First operand 22725 states and 26033 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:18,990 INFO L93 Difference]: Finished difference Result 64239 states and 73655 transitions. [2024-11-21 22:30:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:30:18,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2024-11-21 22:30:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:19,040 INFO L225 Difference]: With dead ends: 64239 [2024-11-21 22:30:19,041 INFO L226 Difference]: Without dead ends: 38537 [2024-11-21 22:30:19,066 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 [2024-11-21 22:30:19,067 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 874 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2676 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 2676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:19,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 342 Invalid, 3196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 2676 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-21 22:30:19,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38537 states. [2024-11-21 22:30:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38537 to 38056. [2024-11-21 22:30:19,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38056 states, 38055 states have (on average 1.1408750492707922) internal successors, (43416), 38055 states have internal predecessors, (43416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38056 states to 38056 states and 43416 transitions. [2024-11-21 22:30:19,574 INFO L78 Accepts]: Start accepts. Automaton has 38056 states and 43416 transitions. Word has length 306 [2024-11-21 22:30:19,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:19,575 INFO L471 AbstractCegarLoop]: Abstraction has 38056 states and 43416 transitions. [2024-11-21 22:30:19,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 38056 states and 43416 transitions. [2024-11-21 22:30:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-21 22:30:19,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:19,583 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:30:19,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-21 22:30:19,583 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:19,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:19,584 INFO L85 PathProgramCache]: Analyzing trace with hash 462278318, now seen corresponding path program 1 times [2024-11-21 22:30:19,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:19,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854537515] [2024-11-21 22:30:19,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:19,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-21 22:30:19,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:19,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854537515] [2024-11-21 22:30:19,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854537515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:30:19,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:30:19,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:30:19,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134539594] [2024-11-21 22:30:19,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:19,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:30:19,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:30:19,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:30:19,792 INFO L87 Difference]: Start difference. First operand 38056 states and 43416 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) [2024-11-21 22:30:21,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:21,656 INFO L93 Difference]: Finished difference Result 91844 states and 104584 transitions. [2024-11-21 22:30:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:30:21,657 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 318 [2024-11-21 22:30:21,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:21,703 INFO L225 Difference]: With dead ends: 91844 [2024-11-21 22:30:21,703 INFO L226 Difference]: Without dead ends: 53358 [2024-11-21 22:30:21,718 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 [2024-11-21 22:30:21,719 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 424 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:21,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 431 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-21 22:30:21,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53358 states. [2024-11-21 22:30:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53358 to 49524. [2024-11-21 22:30:22,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49524 states, 49523 states have (on average 1.1243866486279102) internal successors, (55683), 49523 states have internal predecessors, (55683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49524 states to 49524 states and 55683 transitions. [2024-11-21 22:30:22,502 INFO L78 Accepts]: Start accepts. Automaton has 49524 states and 55683 transitions. Word has length 318 [2024-11-21 22:30:22,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:22,503 INFO L471 AbstractCegarLoop]: Abstraction has 49524 states and 55683 transitions. [2024-11-21 22:30:22,503 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) [2024-11-21 22:30:22,503 INFO L276 IsEmpty]: Start isEmpty. Operand 49524 states and 55683 transitions. [2024-11-21 22:30:22,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-21 22:30:22,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:22,512 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:30:22,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 22:30:22,513 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:22,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash -948205666, now seen corresponding path program 1 times [2024-11-21 22:30:22,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:22,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973974024] [2024-11-21 22:30:22,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:22,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-21 22:30:23,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:23,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973974024] [2024-11-21 22:30:23,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973974024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:30:23,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:30:23,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:30:23,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453778069] [2024-11-21 22:30:23,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:23,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:30:23,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:30:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:30:23,026 INFO L87 Difference]: Start difference. First operand 49524 states and 55683 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:24,768 INFO L93 Difference]: Finished difference Result 114397 states and 129047 transitions. [2024-11-21 22:30:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:30:24,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2024-11-21 22:30:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:24,835 INFO L225 Difference]: With dead ends: 114397 [2024-11-21 22:30:24,835 INFO L226 Difference]: Without dead ends: 63173 [2024-11-21 22:30:24,859 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 [2024-11-21 22:30:24,860 INFO L432 NwaCegarLoop]: 745 mSDtfsCounter, 364 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:24,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 816 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-21 22:30:24,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63173 states. [2024-11-21 22:30:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63173 to 61886. [2024-11-21 22:30:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61886 states, 61885 states have (on average 1.1074089036115375) internal successors, (68532), 61885 states have internal predecessors, (68532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61886 states to 61886 states and 68532 transitions. [2024-11-21 22:30:25,682 INFO L78 Accepts]: Start accepts. Automaton has 61886 states and 68532 transitions. Word has length 321 [2024-11-21 22:30:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:25,683 INFO L471 AbstractCegarLoop]: Abstraction has 61886 states and 68532 transitions. [2024-11-21 22:30:25,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:25,683 INFO L276 IsEmpty]: Start isEmpty. Operand 61886 states and 68532 transitions. [2024-11-21 22:30:25,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-21 22:30:25,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:25,688 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:30:25,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-21 22:30:25,689 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:25,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:25,689 INFO L85 PathProgramCache]: Analyzing trace with hash 932540690, now seen corresponding path program 1 times [2024-11-21 22:30:25,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:25,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524723954] [2024-11-21 22:30:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:25,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 340 proven. 214 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-21 22:30:26,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524723954] [2024-11-21 22:30:26,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524723954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:30:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902671245] [2024-11-21 22:30:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:26,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:30:26,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:30:26,460 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) [2024-11-21 22:30:26,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 22:30:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:26,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 22:30:26,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:30:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 367 proven. 73 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-21 22:30:26,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:30:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-21 22:30:27,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902671245] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:30:27,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:30:27,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-11-21 22:30:27,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459921700] [2024-11-21 22:30:27,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:27,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:30:27,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:27,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:30:27,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:30:27,033 INFO L87 Difference]: Start difference. First operand 61886 states and 68532 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:29,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:29,868 INFO L93 Difference]: Finished difference Result 144217 states and 159922 transitions. [2024-11-21 22:30:29,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:30:29,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2024-11-21 22:30:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:29,954 INFO L225 Difference]: With dead ends: 144217 [2024-11-21 22:30:29,954 INFO L226 Difference]: Without dead ends: 82333 [2024-11-21 22:30:29,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:30:29,971 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 849 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:29,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 189 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-21 22:30:30,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82333 states. [2024-11-21 22:30:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82333 to 77653. [2024-11-21 22:30:30,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77653 states, 77652 states have (on average 1.1105702364394994) internal successors, (86238), 77652 states have internal predecessors, (86238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77653 states to 77653 states and 86238 transitions. [2024-11-21 22:30:30,830 INFO L78 Accepts]: Start accepts. Automaton has 77653 states and 86238 transitions. Word has length 344 [2024-11-21 22:30:30,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:30,830 INFO L471 AbstractCegarLoop]: Abstraction has 77653 states and 86238 transitions. [2024-11-21 22:30:30,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:30,831 INFO L276 IsEmpty]: Start isEmpty. Operand 77653 states and 86238 transitions. [2024-11-21 22:30:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-21 22:30:30,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:30,836 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:30:30,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 22:30:31,036 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,SelfDestructingSolverStorable11 [2024-11-21 22:30:31,037 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:31,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1459095844, now seen corresponding path program 1 times [2024-11-21 22:30:31,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:31,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629299971] [2024-11-21 22:30:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-21 22:30:31,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:31,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629299971] [2024-11-21 22:30:31,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629299971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:30:31,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:30:31,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:30:31,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863960614] [2024-11-21 22:30:31,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:31,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:30:31,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:31,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:30:31,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:30:31,595 INFO L87 Difference]: Start difference. First operand 77653 states and 86238 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:33,699 INFO L93 Difference]: Finished difference Result 168920 states and 188110 transitions. [2024-11-21 22:30:33,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:30:33,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2024-11-21 22:30:33,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:33,793 INFO L225 Difference]: With dead ends: 168920 [2024-11-21 22:30:33,793 INFO L226 Difference]: Without dead ends: 90417 [2024-11-21 22:30:33,815 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 [2024-11-21 22:30:33,816 INFO L432 NwaCegarLoop]: 766 mSDtfsCounter, 392 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:33,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 824 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-21 22:30:33,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90417 states. [2024-11-21 22:30:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90417 to 75491. [2024-11-21 22:30:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75491 states, 75490 states have (on average 1.1091932706318717) internal successors, (83733), 75490 states have internal predecessors, (83733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75491 states to 75491 states and 83733 transitions. [2024-11-21 22:30:34,805 INFO L78 Accepts]: Start accepts. Automaton has 75491 states and 83733 transitions. Word has length 374 [2024-11-21 22:30:34,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:34,806 INFO L471 AbstractCegarLoop]: Abstraction has 75491 states and 83733 transitions. [2024-11-21 22:30:34,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:34,806 INFO L276 IsEmpty]: Start isEmpty. Operand 75491 states and 83733 transitions. [2024-11-21 22:30:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-21 22:30:34,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:34,812 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:30:34,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-21 22:30:34,812 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:34,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:34,813 INFO L85 PathProgramCache]: Analyzing trace with hash 581192442, now seen corresponding path program 1 times [2024-11-21 22:30:34,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:34,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445867753] [2024-11-21 22:30:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:34,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-21 22:30:35,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:35,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445867753] [2024-11-21 22:30:35,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445867753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:30:35,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:30:35,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:30:35,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217342858] [2024-11-21 22:30:35,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:35,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:30:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:30:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:30:35,017 INFO L87 Difference]: Start difference. First operand 75491 states and 83733 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:37,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:37,053 INFO L93 Difference]: Finished difference Result 156939 states and 174500 transitions. [2024-11-21 22:30:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:30:37,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 379 [2024-11-21 22:30:37,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:37,147 INFO L225 Difference]: With dead ends: 156939 [2024-11-21 22:30:37,148 INFO L226 Difference]: Without dead ends: 81022 [2024-11-21 22:30:37,200 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 [2024-11-21 22:30:37,201 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 473 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:37,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 269 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-21 22:30:37,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81022 states. [2024-11-21 22:30:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81022 to 78458. [2024-11-21 22:30:38,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78458 states, 78457 states have (on average 1.1072689498706298) internal successors, (86873), 78457 states have internal predecessors, (86873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:38,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78458 states to 78458 states and 86873 transitions. [2024-11-21 22:30:38,361 INFO L78 Accepts]: Start accepts. Automaton has 78458 states and 86873 transitions. Word has length 379 [2024-11-21 22:30:38,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:38,362 INFO L471 AbstractCegarLoop]: Abstraction has 78458 states and 86873 transitions. [2024-11-21 22:30:38,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:38,362 INFO L276 IsEmpty]: Start isEmpty. Operand 78458 states and 86873 transitions. [2024-11-21 22:30:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-11-21 22:30:38,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:38,368 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:30:38,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-21 22:30:38,369 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:38,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:38,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1328470753, now seen corresponding path program 1 times [2024-11-21 22:30:38,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:38,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743079163] [2024-11-21 22:30:38,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:38,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-21 22:30:38,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743079163] [2024-11-21 22:30:38,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743079163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:30:38,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:30:38,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:30:38,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587699348] [2024-11-21 22:30:38,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:30:38,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:30:38,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:38,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:30:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:30:38,552 INFO L87 Difference]: Start difference. First operand 78458 states and 86873 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:40,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:40,445 INFO L93 Difference]: Finished difference Result 167541 states and 185296 transitions. [2024-11-21 22:30:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:30:40,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 396 [2024-11-21 22:30:40,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:40,540 INFO L225 Difference]: With dead ends: 167541 [2024-11-21 22:30:40,540 INFO L226 Difference]: Without dead ends: 88654 [2024-11-21 22:30:40,590 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 [2024-11-21 22:30:40,590 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 392 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:40,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 331 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-21 22:30:40,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88654 states. [2024-11-21 22:30:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88654 to 83123. [2024-11-21 22:30:42,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83123 states, 83122 states have (on average 1.0984697192079114) internal successors, (91307), 83122 states have internal predecessors, (91307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:42,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83123 states to 83123 states and 91307 transitions. [2024-11-21 22:30:42,116 INFO L78 Accepts]: Start accepts. Automaton has 83123 states and 91307 transitions. Word has length 396 [2024-11-21 22:30:42,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:42,116 INFO L471 AbstractCegarLoop]: Abstraction has 83123 states and 91307 transitions. [2024-11-21 22:30:42,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:42,116 INFO L276 IsEmpty]: Start isEmpty. Operand 83123 states and 91307 transitions. [2024-11-21 22:30:42,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-11-21 22:30:42,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:42,122 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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] [2024-11-21 22:30:42,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-21 22:30:42,122 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:42,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash 419479024, now seen corresponding path program 1 times [2024-11-21 22:30:42,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:42,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071644597] [2024-11-21 22:30:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:42,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 346 proven. 44 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-21 22:30:42,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:42,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071644597] [2024-11-21 22:30:42,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071644597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:30:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763385886] [2024-11-21 22:30:42,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:42,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:30:42,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:30:42,997 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) [2024-11-21 22:30:42,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 22:30:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:43,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-21 22:30:43,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:30:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 417 proven. 82 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-21 22:30:43,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:30:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 417 proven. 82 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-21 22:30:44,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763385886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 22:30:44,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 22:30:44,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-21 22:30:44,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807841652] [2024-11-21 22:30:44,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 22:30:44,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-21 22:30:44,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:30:44,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-21 22:30:44,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-21 22:30:44,395 INFO L87 Difference]: Start difference. First operand 83123 states and 91307 transitions. Second operand has 9 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:30:56,813 INFO L93 Difference]: Finished difference Result 205834 states and 225122 transitions. [2024-11-21 22:30:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-21 22:30:56,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 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 426 [2024-11-21 22:30:56,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:30:56,940 INFO L225 Difference]: With dead ends: 205834 [2024-11-21 22:30:56,940 INFO L226 Difference]: Without dead ends: 117605 [2024-11-21 22:30:56,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 865 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2024-11-21 22:30:56,955 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 11497 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 14099 mSolverCounterSat, 3276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11497 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 17375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3276 IncrementalHoareTripleChecker+Valid, 14099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:30:56,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11497 Valid, 449 Invalid, 17375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3276 Valid, 14099 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2024-11-21 22:30:57,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117605 states. [2024-11-21 22:30:57,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117605 to 97563. [2024-11-21 22:30:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97563 states, 97562 states have (on average 1.0802156577355937) internal successors, (105388), 97562 states have internal predecessors, (105388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:58,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97563 states to 97563 states and 105388 transitions. [2024-11-21 22:30:58,121 INFO L78 Accepts]: Start accepts. Automaton has 97563 states and 105388 transitions. Word has length 426 [2024-11-21 22:30:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:30:58,121 INFO L471 AbstractCegarLoop]: Abstraction has 97563 states and 105388 transitions. [2024-11-21 22:30:58,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:30:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 97563 states and 105388 transitions. [2024-11-21 22:30:58,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-21 22:30:58,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:30:58,131 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:30:58,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 22:30:58,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:30:58,333 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:30:58,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:30:58,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1624467846, now seen corresponding path program 1 times [2024-11-21 22:30:58,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:30:58,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131203514] [2024-11-21 22:30:58,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:58,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:30:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 251 proven. 44 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 22:30:59,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:30:59,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131203514] [2024-11-21 22:30:59,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131203514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:30:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008840745] [2024-11-21 22:30:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:30:59,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:30:59,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:30:59,298 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) [2024-11-21 22:30:59,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 22:30:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:30:59,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 22:30:59,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:30:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 251 proven. 44 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 22:30:59,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:31:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 251 proven. 44 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-21 22:31:01,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008840745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 22:31:01,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 22:31:01,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-21 22:31:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069265456] [2024-11-21 22:31:01,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 22:31:01,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-21 22:31:01,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:31:01,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-21 22:31:01,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-21 22:31:01,823 INFO L87 Difference]: Start difference. First operand 97563 states and 105388 transitions. Second operand has 8 states, 8 states have (on average 137.5) internal successors, (1100), 8 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)