./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label25.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label25.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 244b722e357e7e628c9da22f49af73d4219044ff60ec5c18a778f01607618372 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:50:11,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:50:11,322 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:50:11,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:50:11,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:50:11,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:50:11,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:50:11,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:50:11,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:50:11,362 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:50:11,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:50:11,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:50:11,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:50:11,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:50:11,364 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:50:11,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:50:11,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:50:11,366 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:50:11,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:50:11,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:50:11,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:50:11,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:50:11,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:50:11,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:50:11,369 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:50:11,370 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:50:11,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:50:11,370 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:50:11,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:50:11,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:50:11,372 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:50:11,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:50:11,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:50:11,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:50:11,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:50:11,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:50:11,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:50:11,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:50:11,374 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:50:11,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:50:11,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:50:11,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:50:11,375 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 244b722e357e7e628c9da22f49af73d4219044ff60ec5c18a778f01607618372 [2024-11-18 10:50:11,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:50:11,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:50:11,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:50:11,664 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:50:11,665 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:50:11,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label25.c [2024-11-18 10:50:13,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:50:13,481 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:50:13,482 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label25.c [2024-11-18 10:50:13,513 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2296f2e89/aabac3317e11434dad5d3b221215594d/FLAG606ccfcdd [2024-11-18 10:50:13,531 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2296f2e89/aabac3317e11434dad5d3b221215594d [2024-11-18 10:50:13,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:50:13,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:50:13,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:50:13,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:50:13,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:50:13,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:50:13" (1/1) ... [2024-11-18 10:50:13,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf311d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:13, skipping insertion in model container [2024-11-18 10:50:13,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:50:13" (1/1) ... [2024-11-18 10:50:13,663 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:50:13,906 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_label25.c[3642,3655] [2024-11-18 10:50:14,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:50:14,374 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:50:14,390 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_label25.c[3642,3655] [2024-11-18 10:50:14,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:50:14,675 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:50:14,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14 WrapperNode [2024-11-18 10:50:14,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:50:14,676 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:50:14,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:50:14,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:50:14,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:14,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:15,012 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-18 10:50:15,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:50:15,013 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:50:15,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:50:15,014 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:50:15,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:15,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:15,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:15,221 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]. [2024-11-18 10:50:15,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:15,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:15,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:15,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:15,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:15,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:15,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:50:15,524 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:50:15,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:50:15,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:50:15,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (1/1) ... [2024-11-18 10:50:15,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:50:15,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:50:15,561 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) [2024-11-18 10:50:15,567 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 [2024-11-18 10:50:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:50:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:50:15,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:50:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:50:15,678 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:50:15,680 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:50:18,986 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-18 10:50:18,986 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:50:19,024 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:50:19,027 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:50:19,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:50:19 BoogieIcfgContainer [2024-11-18 10:50:19,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:50:19,029 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:50:19,029 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:50:19,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:50:19,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:50:13" (1/3) ... [2024-11-18 10:50:19,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f53ebee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:50:19, skipping insertion in model container [2024-11-18 10:50:19,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:50:14" (2/3) ... [2024-11-18 10:50:19,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f53ebee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:50:19, skipping insertion in model container [2024-11-18 10:50:19,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:50:19" (3/3) ... [2024-11-18 10:50:19,038 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label25.c [2024-11-18 10:50:19,054 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:50:19,055 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:50:19,133 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:50:19,140 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;@3510cc1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:50:19,141 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:50:19,147 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) [2024-11-18 10:50:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 10:50:19,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:19,155 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] [2024-11-18 10:50:19,156 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:19,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:19,161 INFO L85 PathProgramCache]: Analyzing trace with hash -573341295, now seen corresponding path program 1 times [2024-11-18 10:50:19,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:19,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804652429] [2024-11-18 10:50:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:19,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:19,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:19,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804652429] [2024-11-18 10:50:19,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804652429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:19,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:19,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:50:19,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970246364] [2024-11-18 10:50:19,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:19,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:19,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:19,499 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 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:21,890 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2024-11-18 10:50:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:21,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-11-18 10:50:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:21,913 INFO L225 Difference]: With dead ends: 1644 [2024-11-18 10:50:21,914 INFO L226 Difference]: Without dead ends: 977 [2024-11-18 10:50:21,919 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 [2024-11-18 10:50:21,927 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 465 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 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, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:21,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 10:50:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-18 10:50:22,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2024-11-18 10:50:22,039 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) [2024-11-18 10:50:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2024-11-18 10:50:22,044 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 23 [2024-11-18 10:50:22,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:22,044 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2024-11-18 10:50:22,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2024-11-18 10:50:22,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 10:50:22,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:22,048 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:22,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:50:22,048 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:22,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:22,049 INFO L85 PathProgramCache]: Analyzing trace with hash 977233274, now seen corresponding path program 1 times [2024-11-18 10:50:22,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:22,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918790469] [2024-11-18 10:50:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:22,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:22,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:22,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918790469] [2024-11-18 10:50:22,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918790469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:22,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:22,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:50:22,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843715419] [2024-11-18 10:50:22,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:22,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:22,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:22,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:22,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:22,483 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:25,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:25,436 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2024-11-18 10:50:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:25,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-11-18 10:50:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:25,445 INFO L225 Difference]: With dead ends: 2813 [2024-11-18 10:50:25,445 INFO L226 Difference]: Without dead ends: 1844 [2024-11-18 10:50:25,455 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 [2024-11-18 10:50:25,460 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:25,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 10:50:25,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-18 10:50:25,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2024-11-18 10:50:25,549 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) [2024-11-18 10:50:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2024-11-18 10:50:25,559 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 90 [2024-11-18 10:50:25,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:25,561 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2024-11-18 10:50:25,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:25,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2024-11-18 10:50:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 10:50:25,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:25,570 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:25,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:50:25,572 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:25,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:25,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1040101436, now seen corresponding path program 1 times [2024-11-18 10:50:25,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:25,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937463124] [2024-11-18 10:50:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:25,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:25,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:25,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937463124] [2024-11-18 10:50:25,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937463124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:25,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:25,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:25,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912763480] [2024-11-18 10:50:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:25,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:25,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:25,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:25,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:25,916 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:28,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:28,100 INFO L93 Difference]: Finished difference Result 4552 states and 6282 transitions. [2024-11-18 10:50:28,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:28,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-11-18 10:50:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:28,111 INFO L225 Difference]: With dead ends: 4552 [2024-11-18 10:50:28,111 INFO L226 Difference]: Without dead ends: 2713 [2024-11-18 10:50:28,115 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 [2024-11-18 10:50:28,119 INFO L432 NwaCegarLoop]: 818 mSDtfsCounter, 484 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:28,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 886 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 10:50:28,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2024-11-18 10:50:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2024-11-18 10:50:28,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.3003690036900368) internal successors, (3524), 2710 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:28,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3524 transitions. [2024-11-18 10:50:28,170 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3524 transitions. Word has length 93 [2024-11-18 10:50:28,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:28,172 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3524 transitions. [2024-11-18 10:50:28,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3524 transitions. [2024-11-18 10:50:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-18 10:50:28,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:28,181 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:28,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:50:28,182 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:28,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:28,182 INFO L85 PathProgramCache]: Analyzing trace with hash 153064972, now seen corresponding path program 1 times [2024-11-18 10:50:28,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:28,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398816176] [2024-11-18 10:50:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:28,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-18 10:50:28,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:28,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398816176] [2024-11-18 10:50:28,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398816176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:28,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:28,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:50:28,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232151725] [2024-11-18 10:50:28,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:28,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:28,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:28,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:28,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:28,437 INFO L87 Difference]: Start difference. First operand 2711 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:30,328 INFO L93 Difference]: Finished difference Result 7984 states and 10361 transitions. [2024-11-18 10:50:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:30,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 162 [2024-11-18 10:50:30,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:30,343 INFO L225 Difference]: With dead ends: 7984 [2024-11-18 10:50:30,344 INFO L226 Difference]: Without dead ends: 4421 [2024-11-18 10:50:30,348 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 [2024-11-18 10:50:30,349 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:30,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:50:30,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2024-11-18 10:50:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3571. [2024-11-18 10:50:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 3570 states have (on average 1.1775910364145659) internal successors, (4204), 3570 states have internal predecessors, (4204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:30,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4204 transitions. [2024-11-18 10:50:30,417 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4204 transitions. Word has length 162 [2024-11-18 10:50:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:30,417 INFO L471 AbstractCegarLoop]: Abstraction has 3571 states and 4204 transitions. [2024-11-18 10:50:30,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4204 transitions. [2024-11-18 10:50:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 10:50:30,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:30,420 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:30,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:50:30,420 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:30,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:30,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1508695954, now seen corresponding path program 1 times [2024-11-18 10:50:30,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:30,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887231607] [2024-11-18 10:50:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:30,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:30,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:30,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887231607] [2024-11-18 10:50:30,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887231607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:30,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:30,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:30,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564296004] [2024-11-18 10:50:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:30,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:30,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:30,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:30,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:30,668 INFO L87 Difference]: Start difference. First operand 3571 states and 4204 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:32,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:32,251 INFO L93 Difference]: Finished difference Result 9273 states and 11087 transitions. [2024-11-18 10:50:32,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:32,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2024-11-18 10:50:32,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:32,304 INFO L225 Difference]: With dead ends: 9273 [2024-11-18 10:50:32,305 INFO L226 Difference]: Without dead ends: 5704 [2024-11-18 10:50:32,310 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 [2024-11-18 10:50:32,311 INFO L432 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:32,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:50:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2024-11-18 10:50:32,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5704. [2024-11-18 10:50:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 1.1595651411537786) internal successors, (6613), 5703 states have internal predecessors, (6613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 6613 transitions. [2024-11-18 10:50:32,409 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 6613 transitions. Word has length 175 [2024-11-18 10:50:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:32,410 INFO L471 AbstractCegarLoop]: Abstraction has 5704 states and 6613 transitions. [2024-11-18 10:50:32,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 6613 transitions. [2024-11-18 10:50:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 10:50:32,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:32,412 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:32,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:50:32,413 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:32,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash 311018387, now seen corresponding path program 1 times [2024-11-18 10:50:32,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:32,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202663661] [2024-11-18 10:50:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:32,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 10:50:32,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:32,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202663661] [2024-11-18 10:50:32,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202663661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:32,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:32,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:32,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976386501] [2024-11-18 10:50:32,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:32,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:32,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:32,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:32,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:32,590 INFO L87 Difference]: Start difference. First operand 5704 states and 6613 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:34,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:34,159 INFO L93 Difference]: Finished difference Result 14376 states and 16776 transitions. [2024-11-18 10:50:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:34,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 177 [2024-11-18 10:50:34,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:34,187 INFO L225 Difference]: With dead ends: 14376 [2024-11-18 10:50:34,188 INFO L226 Difference]: Without dead ends: 8673 [2024-11-18 10:50:34,196 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 [2024-11-18 10:50:34,197 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 428 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:34,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:50:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8673 states. [2024-11-18 10:50:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8673 to 5677. [2024-11-18 10:50:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5676 states have (on average 1.1578576462297392) internal successors, (6572), 5676 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 6572 transitions. [2024-11-18 10:50:34,359 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 6572 transitions. Word has length 177 [2024-11-18 10:50:34,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:34,360 INFO L471 AbstractCegarLoop]: Abstraction has 5677 states and 6572 transitions. [2024-11-18 10:50:34,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 6572 transitions. [2024-11-18 10:50:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-18 10:50:34,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:34,366 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:34,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:50:34,367 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:34,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:34,367 INFO L85 PathProgramCache]: Analyzing trace with hash 686495377, now seen corresponding path program 1 times [2024-11-18 10:50:34,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:34,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901956920] [2024-11-18 10:50:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:34,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-18 10:50:34,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:34,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901956920] [2024-11-18 10:50:34,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901956920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:34,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:34,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:34,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218546026] [2024-11-18 10:50:34,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:34,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:34,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:34,616 INFO L87 Difference]: Start difference. First operand 5677 states and 6572 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:36,259 INFO L93 Difference]: Finished difference Result 14315 states and 16680 transitions. [2024-11-18 10:50:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:36,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 255 [2024-11-18 10:50:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:36,280 INFO L225 Difference]: With dead ends: 14315 [2024-11-18 10:50:36,280 INFO L226 Difference]: Without dead ends: 7790 [2024-11-18 10:50:36,288 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 [2024-11-18 10:50:36,289 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:36,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:50:36,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7790 states. [2024-11-18 10:50:36,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 7790. [2024-11-18 10:50:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7790 states, 7789 states have (on average 1.1186288355372962) internal successors, (8713), 7789 states have internal predecessors, (8713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:36,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 8713 transitions. [2024-11-18 10:50:36,412 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 8713 transitions. Word has length 255 [2024-11-18 10:50:36,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:36,412 INFO L471 AbstractCegarLoop]: Abstraction has 7790 states and 8713 transitions. [2024-11-18 10:50:36,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:36,413 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 8713 transitions. [2024-11-18 10:50:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-18 10:50:36,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:36,417 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:36,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:50:36,417 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:36,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1527796204, now seen corresponding path program 1 times [2024-11-18 10:50:36,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:36,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951770489] [2024-11-18 10:50:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-18 10:50:36,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951770489] [2024-11-18 10:50:36,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951770489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:36,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:36,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:36,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022680736] [2024-11-18 10:50:36,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:36,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:36,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:36,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:36,671 INFO L87 Difference]: Start difference. First operand 7790 states and 8713 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) [2024-11-18 10:50:38,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:38,389 INFO L93 Difference]: Finished difference Result 18558 states and 20949 transitions. [2024-11-18 10:50:38,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:38,390 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 295 [2024-11-18 10:50:38,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:38,410 INFO L225 Difference]: With dead ends: 18558 [2024-11-18 10:50:38,410 INFO L226 Difference]: Without dead ends: 10770 [2024-11-18 10:50:38,419 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 [2024-11-18 10:50:38,420 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 482 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:38,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 330 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:50:38,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10770 states. [2024-11-18 10:50:38,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10770 to 9916. [2024-11-18 10:50:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9916 states, 9915 states have (on average 1.1232476046394353) internal successors, (11137), 9915 states have internal predecessors, (11137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 11137 transitions. [2024-11-18 10:50:38,555 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 11137 transitions. Word has length 295 [2024-11-18 10:50:38,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:38,556 INFO L471 AbstractCegarLoop]: Abstraction has 9916 states and 11137 transitions. [2024-11-18 10:50:38,557 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) [2024-11-18 10:50:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 11137 transitions. [2024-11-18 10:50:38,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-18 10:50:38,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:38,563 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:38,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:50:38,563 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:38,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:38,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1391208072, now seen corresponding path program 1 times [2024-11-18 10:50:38,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:38,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087911775] [2024-11-18 10:50:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:38,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 41 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:39,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:39,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087911775] [2024-11-18 10:50:39,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087911775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:39,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973147157] [2024-11-18 10:50:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:39,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:50:39,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:50:39,181 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) [2024-11-18 10:50:39,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:50:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:39,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:50:39,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:50:39,809 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 21 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:39,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:50:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:40,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973147157] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:40,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:50:40,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2024-11-18 10:50:40,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313107304] [2024-11-18 10:50:40,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:40,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 10:50:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:40,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 10:50:40,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:50:40,291 INFO L87 Difference]: Start difference. First operand 9916 states and 11137 transitions. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:43,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:43,563 INFO L93 Difference]: Finished difference Result 32643 states and 37072 transitions. [2024-11-18 10:50:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 10:50:43,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 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 312 [2024-11-18 10:50:43,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:43,602 INFO L225 Difference]: With dead ends: 32643 [2024-11-18 10:50:43,602 INFO L226 Difference]: Without dead ends: 22300 [2024-11-18 10:50:43,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:50:43,620 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 1233 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 3261 mSolverCounterSat, 768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 4029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 3261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:43,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 241 Invalid, 4029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [768 Valid, 3261 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-18 10:50:43,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22300 states. [2024-11-18 10:50:43,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22300 to 20170. [2024-11-18 10:50:44,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20170 states, 20169 states have (on average 1.1309931082354108) internal successors, (22811), 20169 states have internal predecessors, (22811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20170 states to 20170 states and 22811 transitions. [2024-11-18 10:50:44,041 INFO L78 Accepts]: Start accepts. Automaton has 20170 states and 22811 transitions. Word has length 312 [2024-11-18 10:50:44,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:44,042 INFO L471 AbstractCegarLoop]: Abstraction has 20170 states and 22811 transitions. [2024-11-18 10:50:44,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 20170 states and 22811 transitions. [2024-11-18 10:50:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-18 10:50:44,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:44,050 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:44,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 10:50:44,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:50:44,251 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:44,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:44,251 INFO L85 PathProgramCache]: Analyzing trace with hash -92363419, now seen corresponding path program 1 times [2024-11-18 10:50:44,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:44,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395874014] [2024-11-18 10:50:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:44,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-18 10:50:44,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395874014] [2024-11-18 10:50:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395874014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:44,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:44,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143630332] [2024-11-18 10:50:44,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:44,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:44,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:44,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:44,823 INFO L87 Difference]: Start difference. First operand 20170 states and 22811 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:46,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:46,650 INFO L93 Difference]: Finished difference Result 49721 states and 56259 transitions. [2024-11-18 10:50:46,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:46,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 335 [2024-11-18 10:50:46,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:46,696 INFO L225 Difference]: With dead ends: 49721 [2024-11-18 10:50:46,697 INFO L226 Difference]: Without dead ends: 29553 [2024-11-18 10:50:46,718 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 [2024-11-18 10:50:46,719 INFO L432 NwaCegarLoop]: 819 mSDtfsCounter, 435 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:46,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 880 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 10:50:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29553 states. [2024-11-18 10:50:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29553 to 27408. [2024-11-18 10:50:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27408 states, 27407 states have (on average 1.1210274747327325) internal successors, (30724), 27407 states have internal predecessors, (30724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27408 states to 27408 states and 30724 transitions. [2024-11-18 10:50:47,121 INFO L78 Accepts]: Start accepts. Automaton has 27408 states and 30724 transitions. Word has length 335 [2024-11-18 10:50:47,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:47,123 INFO L471 AbstractCegarLoop]: Abstraction has 27408 states and 30724 transitions. [2024-11-18 10:50:47,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:47,123 INFO L276 IsEmpty]: Start isEmpty. Operand 27408 states and 30724 transitions. [2024-11-18 10:50:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-18 10:50:47,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:47,133 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:47,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:50:47,133 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:47,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:47,134 INFO L85 PathProgramCache]: Analyzing trace with hash 751288183, now seen corresponding path program 1 times [2024-11-18 10:50:47,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:47,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269025081] [2024-11-18 10:50:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:47,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:50:47,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:47,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269025081] [2024-11-18 10:50:47,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269025081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:47,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:47,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:47,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467605853] [2024-11-18 10:50:47,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:47,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:47,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:47,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:47,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:47,440 INFO L87 Difference]: Start difference. First operand 27408 states and 30724 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:49,128 INFO L93 Difference]: Finished difference Result 68024 states and 76175 transitions. [2024-11-18 10:50:49,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:49,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 383 [2024-11-18 10:50:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:49,190 INFO L225 Difference]: With dead ends: 68024 [2024-11-18 10:50:49,191 INFO L226 Difference]: Without dead ends: 40618 [2024-11-18 10:50:49,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:49,218 INFO L432 NwaCegarLoop]: 712 mSDtfsCounter, 421 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:49,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 756 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:50:49,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40618 states. [2024-11-18 10:50:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40618 to 37615. [2024-11-18 10:50:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37615 states, 37614 states have (on average 1.1138937629605998) internal successors, (41898), 37614 states have internal predecessors, (41898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37615 states to 37615 states and 41898 transitions. [2024-11-18 10:50:49,757 INFO L78 Accepts]: Start accepts. Automaton has 37615 states and 41898 transitions. Word has length 383 [2024-11-18 10:50:49,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:49,758 INFO L471 AbstractCegarLoop]: Abstraction has 37615 states and 41898 transitions. [2024-11-18 10:50:49,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 37615 states and 41898 transitions. [2024-11-18 10:50:49,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-18 10:50:49,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:49,766 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:49,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 10:50:49,766 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:49,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash -363636585, now seen corresponding path program 1 times [2024-11-18 10:50:49,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:49,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443734964] [2024-11-18 10:50:49,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:49,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:50,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:50,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443734964] [2024-11-18 10:50:50,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443734964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:50,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:50,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:50:50,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635864754] [2024-11-18 10:50:50,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:50,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:50:50,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:50,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:50:50,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:50:50,385 INFO L87 Difference]: Start difference. First operand 37615 states and 41898 transitions. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:53,217 INFO L93 Difference]: Finished difference Result 99095 states and 109991 transitions. [2024-11-18 10:50:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:50:53,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 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 405 [2024-11-18 10:50:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:53,300 INFO L225 Difference]: With dead ends: 99095 [2024-11-18 10:50:53,300 INFO L226 Difference]: Without dead ends: 61482 [2024-11-18 10:50:53,340 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 [2024-11-18 10:50:53,341 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 732 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:53,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 178 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 10:50:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61482 states. [2024-11-18 10:50:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61482 to 56363. [2024-11-18 10:50:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56363 states, 56362 states have (on average 1.1103580426528512) internal successors, (62582), 56362 states have internal predecessors, (62582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56363 states to 56363 states and 62582 transitions. [2024-11-18 10:50:54,111 INFO L78 Accepts]: Start accepts. Automaton has 56363 states and 62582 transitions. Word has length 405 [2024-11-18 10:50:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:54,112 INFO L471 AbstractCegarLoop]: Abstraction has 56363 states and 62582 transitions. [2024-11-18 10:50:54,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 56363 states and 62582 transitions. [2024-11-18 10:50:54,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-18 10:50:54,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:54,128 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 10:50:54,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:50:54,128 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:54,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:54,129 INFO L85 PathProgramCache]: Analyzing trace with hash 232477028, now seen corresponding path program 1 times [2024-11-18 10:50:54,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:54,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548529396] [2024-11-18 10:50:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:54,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-18 10:50:54,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:54,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548529396] [2024-11-18 10:50:54,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548529396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:54,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:54,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835204723] [2024-11-18 10:50:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:54,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:54,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:54,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:54,349 INFO L87 Difference]: Start difference. First operand 56363 states and 62582 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:56,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:56,323 INFO L93 Difference]: Finished difference Result 123357 states and 137708 transitions. [2024-11-18 10:50:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:56,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 427 [2024-11-18 10:50:56,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:56,399 INFO L225 Difference]: With dead ends: 123357 [2024-11-18 10:50:56,399 INFO L226 Difference]: Without dead ends: 64430 [2024-11-18 10:50:56,624 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 [2024-11-18 10:50:56,632 INFO L432 NwaCegarLoop]: 661 mSDtfsCounter, 511 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:56,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 712 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 10:50:56,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64430 states. [2024-11-18 10:50:57,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64430 to 64421. [2024-11-18 10:50:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64421 states, 64420 states have (on average 1.1002018006830176) internal successors, (70875), 64420 states have internal predecessors, (70875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:57,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64421 states to 64421 states and 70875 transitions. [2024-11-18 10:50:57,662 INFO L78 Accepts]: Start accepts. Automaton has 64421 states and 70875 transitions. Word has length 427 [2024-11-18 10:50:57,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:57,663 INFO L471 AbstractCegarLoop]: Abstraction has 64421 states and 70875 transitions. [2024-11-18 10:50:57,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:57,663 INFO L276 IsEmpty]: Start isEmpty. Operand 64421 states and 70875 transitions. [2024-11-18 10:50:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-11-18 10:50:57,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:57,706 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:57,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 10:50:57,707 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:57,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:57,707 INFO L85 PathProgramCache]: Analyzing trace with hash -542720110, now seen corresponding path program 1 times [2024-11-18 10:50:57,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:57,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823638006] [2024-11-18 10:50:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:57,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2024-11-18 10:50:58,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:58,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823638006] [2024-11-18 10:50:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823638006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:58,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:58,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:58,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82652343] [2024-11-18 10:50:58,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:58,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:58,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:58,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:58,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:58,168 INFO L87 Difference]: Start difference. First operand 64421 states and 70875 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:00,264 INFO L93 Difference]: Finished difference Result 140768 states and 155006 transitions. [2024-11-18 10:51:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:00,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 472 [2024-11-18 10:51:00,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:00,377 INFO L225 Difference]: With dead ends: 140768 [2024-11-18 10:51:00,378 INFO L226 Difference]: Without dead ends: 73791 [2024-11-18 10:51:00,391 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 [2024-11-18 10:51:00,392 INFO L432 NwaCegarLoop]: 729 mSDtfsCounter, 436 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:00,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 785 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:51:00,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73791 states. [2024-11-18 10:51:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73791 to 72499. [2024-11-18 10:51:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72499 states, 72498 states have (on average 1.091588733482303) internal successors, (79138), 72498 states have internal predecessors, (79138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72499 states to 72499 states and 79138 transitions. [2024-11-18 10:51:01,388 INFO L78 Accepts]: Start accepts. Automaton has 72499 states and 79138 transitions. Word has length 472 [2024-11-18 10:51:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:01,388 INFO L471 AbstractCegarLoop]: Abstraction has 72499 states and 79138 transitions. [2024-11-18 10:51:01,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 72499 states and 79138 transitions. [2024-11-18 10:51:01,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-18 10:51:01,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:01,403 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:01,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:51:01,403 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:01,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1783078949, now seen corresponding path program 1 times [2024-11-18 10:51:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065341035] [2024-11-18 10:51:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 299 proven. 82 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 10:51:03,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:03,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065341035] [2024-11-18 10:51:03,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065341035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:51:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385305586] [2024-11-18 10:51:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:03,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:51:03,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:51:03,237 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) [2024-11-18 10:51:03,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:51:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:03,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:51:03,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:51:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 299 proven. 82 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 10:51:03,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:51:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 299 proven. 82 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 10:51:05,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385305586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:51:05,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:51:05,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-18 10:51:05,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781097824] [2024-11-18 10:51:05,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:51:05,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 10:51:05,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:05,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 10:51:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:51:05,505 INFO L87 Difference]: Start difference. First operand 72499 states and 79138 transitions. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 9 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:11,444 INFO L93 Difference]: Finished difference Result 171865 states and 188413 transitions. [2024-11-18 10:51:11,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 10:51:11,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 9 states have internal predecessors, (976), 0 states have call successors, (0), 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 476 [2024-11-18 10:51:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:11,578 INFO L225 Difference]: With dead ends: 171865 [2024-11-18 10:51:11,578 INFO L226 Difference]: Without dead ends: 99368 [2024-11-18 10:51:11,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 958 GetRequests, 947 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-18 10:51:11,597 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 2964 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 6707 mSolverCounterSat, 984 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2964 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 7691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 984 IncrementalHoareTripleChecker+Valid, 6707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:11,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2964 Valid, 358 Invalid, 7691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [984 Valid, 6707 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-18 10:51:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99368 states. [2024-11-18 10:51:12,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99368 to 93770. [2024-11-18 10:51:12,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93770 states, 93769 states have (on average 1.0911388625238618) internal successors, (102315), 93769 states have internal predecessors, (102315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93770 states to 93770 states and 102315 transitions. [2024-11-18 10:51:13,133 INFO L78 Accepts]: Start accepts. Automaton has 93770 states and 102315 transitions. Word has length 476 [2024-11-18 10:51:13,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:13,133 INFO L471 AbstractCegarLoop]: Abstraction has 93770 states and 102315 transitions. [2024-11-18 10:51:13,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 9 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand 93770 states and 102315 transitions. [2024-11-18 10:51:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2024-11-18 10:51:13,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:13,153 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:13,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 10:51:13,353 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,SelfDestructingSolverStorable14 [2024-11-18 10:51:13,354 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:13,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:13,355 INFO L85 PathProgramCache]: Analyzing trace with hash 174057188, now seen corresponding path program 1 times [2024-11-18 10:51:13,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:13,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025740623] [2024-11-18 10:51:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:13,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 547 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-18 10:51:14,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:14,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025740623] [2024-11-18 10:51:14,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025740623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:14,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:14,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:14,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648252711] [2024-11-18 10:51:14,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:14,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:14,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:14,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:14,550 INFO L87 Difference]: Start difference. First operand 93770 states and 102315 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:16,554 INFO L93 Difference]: Finished difference Result 197775 states and 215525 transitions. [2024-11-18 10:51:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:16,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 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 539 [2024-11-18 10:51:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:16,677 INFO L225 Difference]: With dead ends: 197775 [2024-11-18 10:51:16,678 INFO L226 Difference]: Without dead ends: 104857 [2024-11-18 10:51:16,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:16,700 INFO L432 NwaCegarLoop]: 706 mSDtfsCounter, 312 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:16,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 759 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:51:16,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104857 states. [2024-11-18 10:51:18,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104857 to 102708. [2024-11-18 10:51:18,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102708 states, 102707 states have (on average 1.0859921913793606) internal successors, (111539), 102707 states have internal predecessors, (111539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102708 states to 102708 states and 111539 transitions. [2024-11-18 10:51:18,578 INFO L78 Accepts]: Start accepts. Automaton has 102708 states and 111539 transitions. Word has length 539 [2024-11-18 10:51:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:18,579 INFO L471 AbstractCegarLoop]: Abstraction has 102708 states and 111539 transitions. [2024-11-18 10:51:18,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand 102708 states and 111539 transitions. [2024-11-18 10:51:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2024-11-18 10:51:18,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:18,593 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:18,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 10:51:18,594 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:18,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1738542916, now seen corresponding path program 1 times [2024-11-18 10:51:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:18,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61794845] [2024-11-18 10:51:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:18,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-18 10:51:19,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:19,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61794845] [2024-11-18 10:51:19,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61794845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:19,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:19,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:19,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655809565] [2024-11-18 10:51:19,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:19,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:19,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:19,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:19,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:19,009 INFO L87 Difference]: Start difference. First operand 102708 states and 111539 transitions. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:20,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:20,919 INFO L93 Difference]: Finished difference Result 217770 states and 236948 transitions. [2024-11-18 10:51:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:20,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 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 552 [2024-11-18 10:51:20,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:21,060 INFO L225 Difference]: With dead ends: 217770 [2024-11-18 10:51:21,061 INFO L226 Difference]: Without dead ends: 115064 [2024-11-18 10:51:21,124 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 [2024-11-18 10:51:21,124 INFO L432 NwaCegarLoop]: 668 mSDtfsCounter, 286 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:21,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 728 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:51:21,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115064 states. [2024-11-18 10:51:22,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115064 to 108247. [2024-11-18 10:51:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108247 states, 108246 states have (on average 1.080039909095948) internal successors, (116910), 108246 states have internal predecessors, (116910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108247 states to 108247 states and 116910 transitions. [2024-11-18 10:51:23,067 INFO L78 Accepts]: Start accepts. Automaton has 108247 states and 116910 transitions. Word has length 552 [2024-11-18 10:51:23,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:23,068 INFO L471 AbstractCegarLoop]: Abstraction has 108247 states and 116910 transitions. [2024-11-18 10:51:23,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:23,068 INFO L276 IsEmpty]: Start isEmpty. Operand 108247 states and 116910 transitions. [2024-11-18 10:51:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2024-11-18 10:51:23,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:23,082 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:51:23,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 10:51:23,082 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:23,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:23,083 INFO L85 PathProgramCache]: Analyzing trace with hash -882095651, now seen corresponding path program 1 times [2024-11-18 10:51:23,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:23,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249967166] [2024-11-18 10:51:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:23,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 647 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 10:51:24,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:24,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249967166] [2024-11-18 10:51:24,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249967166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:24,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:24,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:51:24,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823659581] [2024-11-18 10:51:24,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:24,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:51:24,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:24,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:51:24,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:51:24,138 INFO L87 Difference]: Start difference. First operand 108247 states and 116910 transitions. Second operand has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:26,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:26,418 INFO L93 Difference]: Finished difference Result 219467 states and 236898 transitions. [2024-11-18 10:51:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:51:26,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 558 [2024-11-18 10:51:26,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:26,559 INFO L225 Difference]: With dead ends: 219467 [2024-11-18 10:51:26,560 INFO L226 Difference]: Without dead ends: 112072 [2024-11-18 10:51:26,623 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 [2024-11-18 10:51:26,624 INFO L432 NwaCegarLoop]: 664 mSDtfsCounter, 748 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:26,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 744 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2062 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 10:51:26,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112072 states.