./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label09.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 759500fc885fd8551afb1744440c02e812929b084934756d49ccfd6e6b033437 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 15:17:23,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 15:17:23,256 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 15:17:23,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 15:17:23,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 15:17:23,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 15:17:23,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 15:17:23,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 15:17:23,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 15:17:23,277 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 15:17:23,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 15:17:23,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 15:17:23,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 15:17:23,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 15:17:23,278 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 15:17:23,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 15:17:23,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 15:17:23,279 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 15:17:23,280 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 15:17:23,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 15:17:23,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 15:17:23,281 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 15:17:23,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 15:17:23,281 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 15:17:23,282 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 15:17:23,282 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 15:17:23,282 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 15:17:23,282 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 15:17:23,283 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 15:17:23,283 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 15:17:23,283 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 15:17:23,283 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 15:17:23,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:17:23,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 15:17:23,284 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 15:17:23,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 15:17:23,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 15:17:23,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 15:17:23,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 15:17:23,285 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 15:17:23,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 15:17:23,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 15:17:23,286 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 759500fc885fd8551afb1744440c02e812929b084934756d49ccfd6e6b033437 [2024-10-12 15:17:23,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 15:17:23,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 15:17:23,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 15:17:23,542 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 15:17:23,543 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 15:17:23,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label09.c [2024-10-12 15:17:24,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 15:17:25,172 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 15:17:25,173 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label09.c [2024-10-12 15:17:25,192 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd91f388/0ee44c5e836a484cb489829f5f4f0612/FLAGf3bfa82cc [2024-10-12 15:17:25,204 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd91f388/0ee44c5e836a484cb489829f5f4f0612 [2024-10-12 15:17:25,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 15:17:25,207 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 15:17:25,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 15:17:25,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 15:17:25,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 15:17:25,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:17:25" (1/1) ... [2024-10-12 15:17:25,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:25, skipping insertion in model container [2024-10-12 15:17:25,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:17:25" (1/1) ... [2024-10-12 15:17:25,278 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 15:17:25,783 WARN L248 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/Problem03_label09.c[54191,54204] [2024-10-12 15:17:25,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:17:25,852 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 15:17:26,013 WARN L248 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/Problem03_label09.c[54191,54204] [2024-10-12 15:17:26,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:17:26,042 INFO L204 MainTranslator]: Completed translation [2024-10-12 15:17:26,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26 WrapperNode [2024-10-12 15:17:26,043 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 15:17:26,044 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 15:17:26,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 15:17:26,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 15:17:26,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,144 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-12 15:17:26,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 15:17:26,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 15:17:26,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 15:17:26,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 15:17:26,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,170 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,206 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]. [2024-10-12 15:17:26,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,236 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,249 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 15:17:26,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 15:17:26,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 15:17:26,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 15:17:26,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (1/1) ... [2024-10-12 15:17:26,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:17:26,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:26,326 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) [2024-10-12 15:17:26,333 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 [2024-10-12 15:17:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 15:17:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 15:17:26,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 15:17:26,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 15:17:26,442 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 15:17:26,444 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 15:17:28,026 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-12 15:17:28,027 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 15:17:28,084 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 15:17:28,086 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 15:17:28,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:17:28 BoogieIcfgContainer [2024-10-12 15:17:28,087 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 15:17:28,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 15:17:28,089 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 15:17:28,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 15:17:28,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:17:25" (1/3) ... [2024-10-12 15:17:28,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da5c9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:17:28, skipping insertion in model container [2024-10-12 15:17:28,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:26" (2/3) ... [2024-10-12 15:17:28,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da5c9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:17:28, skipping insertion in model container [2024-10-12 15:17:28,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:17:28" (3/3) ... [2024-10-12 15:17:28,094 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label09.c [2024-10-12 15:17:28,107 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 15:17:28,107 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 15:17:28,168 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 15:17:28,177 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;@42813c58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 15:17:28,178 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 15:17:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:28,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-12 15:17:28,193 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:28,194 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:28,195 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:28,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:28,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1777658031, now seen corresponding path program 1 times [2024-10-12 15:17:28,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:28,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284465259] [2024-10-12 15:17:28,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:28,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:28,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:28,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284465259] [2024-10-12 15:17:28,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284465259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:28,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:28,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240753777] [2024-10-12 15:17:28,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:28,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 15:17:28,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:28,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 15:17:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:17:28,748 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:28,802 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-12 15:17:28,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 15:17:28,805 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2024-10-12 15:17:28,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:28,816 INFO L225 Difference]: With dead ends: 479 [2024-10-12 15:17:28,817 INFO L226 Difference]: Without dead ends: 238 [2024-10-12 15:17:28,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:17:28,824 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:28,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:17:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-12 15:17:28,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-12 15:17:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-12 15:17:28,873 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 147 [2024-10-12 15:17:28,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:28,873 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-12 15:17:28,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:28,874 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-12 15:17:28,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-12 15:17:28,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:28,876 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:28,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 15:17:28,876 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:28,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:28,878 INFO L85 PathProgramCache]: Analyzing trace with hash -114788689, now seen corresponding path program 1 times [2024-10-12 15:17:28,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:28,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869443860] [2024-10-12 15:17:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:28,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:29,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:29,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869443860] [2024-10-12 15:17:29,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869443860] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:29,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:29,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:29,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500100570] [2024-10-12 15:17:29,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:29,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:29,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:29,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:29,341 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:30,023 INFO L93 Difference]: Finished difference Result 704 states and 1166 transitions. [2024-10-12 15:17:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:30,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2024-10-12 15:17:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:30,028 INFO L225 Difference]: With dead ends: 704 [2024-10-12 15:17:30,028 INFO L226 Difference]: Without dead ends: 467 [2024-10-12 15:17:30,030 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 [2024-10-12 15:17:30,031 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 97 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:30,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 129 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:17:30,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-10-12 15:17:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 453. [2024-10-12 15:17:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.6283185840707965) internal successors, (736), 452 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 736 transitions. [2024-10-12 15:17:30,065 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 736 transitions. Word has length 147 [2024-10-12 15:17:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:30,066 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 736 transitions. [2024-10-12 15:17:30,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:30,067 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 736 transitions. [2024-10-12 15:17:30,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-12 15:17:30,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:30,072 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:30,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 15:17:30,072 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:30,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:30,072 INFO L85 PathProgramCache]: Analyzing trace with hash 85123301, now seen corresponding path program 1 times [2024-10-12 15:17:30,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:30,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515374046] [2024-10-12 15:17:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:30,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:30,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:30,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515374046] [2024-10-12 15:17:30,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515374046] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:30,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:30,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:30,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100265657] [2024-10-12 15:17:30,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:30,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:30,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:30,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:30,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:30,262 INFO L87 Difference]: Start difference. First operand 453 states and 736 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:30,891 INFO L93 Difference]: Finished difference Result 1329 states and 2168 transitions. [2024-10-12 15:17:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:30,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2024-10-12 15:17:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:30,895 INFO L225 Difference]: With dead ends: 1329 [2024-10-12 15:17:30,895 INFO L226 Difference]: Without dead ends: 877 [2024-10-12 15:17:30,896 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 [2024-10-12 15:17:30,897 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:30,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 161 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:17:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-10-12 15:17:30,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 873. [2024-10-12 15:17:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5229357798165137) internal successors, (1328), 872 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1328 transitions. [2024-10-12 15:17:30,915 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1328 transitions. Word has length 152 [2024-10-12 15:17:30,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:30,920 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1328 transitions. [2024-10-12 15:17:30,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1328 transitions. [2024-10-12 15:17:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-12 15:17:30,923 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:30,923 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:30,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 15:17:30,924 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:30,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1936693710, now seen corresponding path program 1 times [2024-10-12 15:17:30,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:30,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975570261] [2024-10-12 15:17:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:30,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975570261] [2024-10-12 15:17:31,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975570261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:31,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:31,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:31,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830282715] [2024-10-12 15:17:31,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:31,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:31,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:31,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:31,073 INFO L87 Difference]: Start difference. First operand 873 states and 1328 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 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) [2024-10-12 15:17:31,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:31,958 INFO L93 Difference]: Finished difference Result 2574 states and 3934 transitions. [2024-10-12 15:17:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:31,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 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 155 [2024-10-12 15:17:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:31,970 INFO L225 Difference]: With dead ends: 2574 [2024-10-12 15:17:31,970 INFO L226 Difference]: Without dead ends: 1702 [2024-10-12 15:17:31,971 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 [2024-10-12 15:17:31,972 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:31,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 90 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:17:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2024-10-12 15:17:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1686. [2024-10-12 15:17:32,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1685 states have (on average 1.4985163204747773) internal successors, (2525), 1685 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2525 transitions. [2024-10-12 15:17:32,020 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2525 transitions. Word has length 155 [2024-10-12 15:17:32,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:32,020 INFO L471 AbstractCegarLoop]: Abstraction has 1686 states and 2525 transitions. [2024-10-12 15:17:32,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 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) [2024-10-12 15:17:32,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2525 transitions. [2024-10-12 15:17:32,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-12 15:17:32,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:32,024 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:32,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 15:17:32,024 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:32,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:32,026 INFO L85 PathProgramCache]: Analyzing trace with hash 686416038, now seen corresponding path program 1 times [2024-10-12 15:17:32,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:32,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994545632] [2024-10-12 15:17:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:32,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 15:17:32,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:32,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994545632] [2024-10-12 15:17:32,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994545632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:32,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:32,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383935252] [2024-10-12 15:17:32,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:32,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:32,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:32,260 INFO L87 Difference]: Start difference. First operand 1686 states and 2525 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:32,897 INFO L93 Difference]: Finished difference Result 4193 states and 6259 transitions. [2024-10-12 15:17:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:32,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 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 164 [2024-10-12 15:17:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:32,904 INFO L225 Difference]: With dead ends: 4193 [2024-10-12 15:17:32,905 INFO L226 Difference]: Without dead ends: 2508 [2024-10-12 15:17:32,907 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 [2024-10-12 15:17:32,908 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 234 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:32,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 113 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:17:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2024-10-12 15:17:32,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2507. [2024-10-12 15:17:32,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 1.465682362330407) internal successors, (3673), 2506 states have internal predecessors, (3673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3673 transitions. [2024-10-12 15:17:32,945 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3673 transitions. Word has length 164 [2024-10-12 15:17:32,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:32,946 INFO L471 AbstractCegarLoop]: Abstraction has 2507 states and 3673 transitions. [2024-10-12 15:17:32,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:32,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3673 transitions. [2024-10-12 15:17:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-12 15:17:32,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:32,950 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:32,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 15:17:32,951 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:32,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:32,951 INFO L85 PathProgramCache]: Analyzing trace with hash -791765182, now seen corresponding path program 1 times [2024-10-12 15:17:32,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:32,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240126045] [2024-10-12 15:17:32,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:32,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:33,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:33,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240126045] [2024-10-12 15:17:33,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240126045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:33,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:33,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:33,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077463239] [2024-10-12 15:17:33,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:33,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:33,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:33,242 INFO L87 Difference]: Start difference. First operand 2507 states and 3673 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:33,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:33,905 INFO L93 Difference]: Finished difference Result 6242 states and 9107 transitions. [2024-10-12 15:17:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:33,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2024-10-12 15:17:33,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:33,915 INFO L225 Difference]: With dead ends: 6242 [2024-10-12 15:17:33,915 INFO L226 Difference]: Without dead ends: 3736 [2024-10-12 15:17:33,917 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 [2024-10-12 15:17:33,918 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 208 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:33,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 153 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:17:33,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2024-10-12 15:17:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3725. [2024-10-12 15:17:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3725 states, 3724 states have (on average 1.4113856068743287) internal successors, (5256), 3724 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 5256 transitions. [2024-10-12 15:17:33,962 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 5256 transitions. Word has length 166 [2024-10-12 15:17:33,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:33,962 INFO L471 AbstractCegarLoop]: Abstraction has 3725 states and 5256 transitions. [2024-10-12 15:17:33,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:33,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 5256 transitions. [2024-10-12 15:17:33,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-12 15:17:33,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:33,967 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-12 15:17:33,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 15:17:33,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:33,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:33,967 INFO L85 PathProgramCache]: Analyzing trace with hash -305300235, now seen corresponding path program 1 times [2024-10-12 15:17:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:33,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537639641] [2024-10-12 15:17:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:33,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:17:34,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537639641] [2024-10-12 15:17:34,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537639641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:34,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:34,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:17:34,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704496523] [2024-10-12 15:17:34,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:34,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:34,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:34,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:34,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:34,098 INFO L87 Difference]: Start difference. First operand 3725 states and 5256 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:34,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:34,830 INFO L93 Difference]: Finished difference Result 10903 states and 15406 transitions. [2024-10-12 15:17:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:34,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 167 [2024-10-12 15:17:34,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:34,850 INFO L225 Difference]: With dead ends: 10903 [2024-10-12 15:17:34,850 INFO L226 Difference]: Without dead ends: 7179 [2024-10-12 15:17:34,856 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 [2024-10-12 15:17:34,857 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 225 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:34,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 426 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:17:34,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7179 states. [2024-10-12 15:17:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7179 to 6162. [2024-10-12 15:17:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6162 states, 6161 states have (on average 1.2949196559000162) internal successors, (7978), 6161 states have internal predecessors, (7978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6162 states to 6162 states and 7978 transitions. [2024-10-12 15:17:34,961 INFO L78 Accepts]: Start accepts. Automaton has 6162 states and 7978 transitions. Word has length 167 [2024-10-12 15:17:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:34,961 INFO L471 AbstractCegarLoop]: Abstraction has 6162 states and 7978 transitions. [2024-10-12 15:17:34,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 6162 states and 7978 transitions. [2024-10-12 15:17:34,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-12 15:17:34,967 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:34,967 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:34,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 15:17:34,968 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:34,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash 84929489, now seen corresponding path program 1 times [2024-10-12 15:17:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:34,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586005306] [2024-10-12 15:17:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:34,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:35,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:35,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586005306] [2024-10-12 15:17:35,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586005306] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:35,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616769443] [2024-10-12 15:17:35,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:35,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:35,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:35,270 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) [2024-10-12 15:17:35,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 15:17:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:35,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:17:35,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-12 15:17:35,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:35,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616769443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:35,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:35,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 15:17:35,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923533436] [2024-10-12 15:17:35,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:35,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:35,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:35,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:35,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:35,597 INFO L87 Difference]: Start difference. First operand 6162 states and 7978 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 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) [2024-10-12 15:17:36,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:36,249 INFO L93 Difference]: Finished difference Result 17011 states and 22107 transitions. [2024-10-12 15:17:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:36,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 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 173 [2024-10-12 15:17:36,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:36,277 INFO L225 Difference]: With dead ends: 17011 [2024-10-12 15:17:36,277 INFO L226 Difference]: Without dead ends: 10850 [2024-10-12 15:17:36,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:36,287 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 113 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:36,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 165 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:17:36,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10850 states. [2024-10-12 15:17:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10850 to 10646. [2024-10-12 15:17:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10646 states, 10645 states have (on average 1.262940347581024) internal successors, (13444), 10645 states have internal predecessors, (13444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10646 states to 10646 states and 13444 transitions. [2024-10-12 15:17:36,495 INFO L78 Accepts]: Start accepts. Automaton has 10646 states and 13444 transitions. Word has length 173 [2024-10-12 15:17:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:36,496 INFO L471 AbstractCegarLoop]: Abstraction has 10646 states and 13444 transitions. [2024-10-12 15:17:36,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 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) [2024-10-12 15:17:36,497 INFO L276 IsEmpty]: Start isEmpty. Operand 10646 states and 13444 transitions. [2024-10-12 15:17:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-10-12 15:17:36,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:36,507 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:36,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 15:17:36,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:36,712 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:36,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:36,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1780925875, now seen corresponding path program 1 times [2024-10-12 15:17:36,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:36,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532230160] [2024-10-12 15:17:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:36,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:36,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:36,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532230160] [2024-10-12 15:17:36,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532230160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:36,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573493588] [2024-10-12 15:17:36,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:36,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:36,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:36,938 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) [2024-10-12 15:17:36,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 15:17:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:37,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:17:37,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:17:37,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:37,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573493588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:37,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:37,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:17:37,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209139023] [2024-10-12 15:17:37,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:37,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:37,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:37,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:37,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:37,312 INFO L87 Difference]: Start difference. First operand 10646 states and 13444 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:37,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:37,982 INFO L93 Difference]: Finished difference Result 20881 states and 26266 transitions. [2024-10-12 15:17:37,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:37,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 185 [2024-10-12 15:17:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:38,012 INFO L225 Difference]: With dead ends: 20881 [2024-10-12 15:17:38,013 INFO L226 Difference]: Without dead ends: 10236 [2024-10-12 15:17:38,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:38,024 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 130 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:38,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 373 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:17:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10236 states. [2024-10-12 15:17:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10236 to 9015. [2024-10-12 15:17:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9015 states, 9014 states have (on average 1.2073441313512314) internal successors, (10883), 9014 states have internal predecessors, (10883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:38,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 10883 transitions. [2024-10-12 15:17:38,154 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 10883 transitions. Word has length 185 [2024-10-12 15:17:38,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:38,155 INFO L471 AbstractCegarLoop]: Abstraction has 9015 states and 10883 transitions. [2024-10-12 15:17:38,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:38,155 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 10883 transitions. [2024-10-12 15:17:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-10-12 15:17:38,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:38,163 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:38,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 15:17:38,367 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,SelfDestructingSolverStorable8 [2024-10-12 15:17:38,368 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:38,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:38,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1567639170, now seen corresponding path program 1 times [2024-10-12 15:17:38,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:38,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170388389] [2024-10-12 15:17:38,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:38,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 15:17:38,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:38,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170388389] [2024-10-12 15:17:38,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170388389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:38,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:38,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859484666] [2024-10-12 15:17:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:38,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:38,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:38,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:38,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:38,581 INFO L87 Difference]: Start difference. First operand 9015 states and 10883 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:39,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:39,555 INFO L93 Difference]: Finished difference Result 22701 states and 27828 transitions. [2024-10-12 15:17:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:39,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 198 [2024-10-12 15:17:39,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:39,577 INFO L225 Difference]: With dead ends: 22701 [2024-10-12 15:17:39,578 INFO L226 Difference]: Without dead ends: 13687 [2024-10-12 15:17:39,588 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 [2024-10-12 15:17:39,589 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 203 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:39,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 165 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 15:17:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13687 states. [2024-10-12 15:17:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13687 to 13684. [2024-10-12 15:17:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13684 states, 13683 states have (on average 1.1741577139516188) internal successors, (16066), 13683 states have internal predecessors, (16066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13684 states to 13684 states and 16066 transitions. [2024-10-12 15:17:39,790 INFO L78 Accepts]: Start accepts. Automaton has 13684 states and 16066 transitions. Word has length 198 [2024-10-12 15:17:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:39,790 INFO L471 AbstractCegarLoop]: Abstraction has 13684 states and 16066 transitions. [2024-10-12 15:17:39,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13684 states and 16066 transitions. [2024-10-12 15:17:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-12 15:17:39,806 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:39,806 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:39,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 15:17:39,806 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:39,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:39,807 INFO L85 PathProgramCache]: Analyzing trace with hash -654784230, now seen corresponding path program 1 times [2024-10-12 15:17:39,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:39,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387711258] [2024-10-12 15:17:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:39,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-12 15:17:40,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:40,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387711258] [2024-10-12 15:17:40,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387711258] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:40,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423751863] [2024-10-12 15:17:40,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:40,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:40,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:40,096 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:17:40,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 15:17:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:40,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:17:40,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-12 15:17:40,247 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:40,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423751863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:40,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:40,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:17:40,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821760933] [2024-10-12 15:17:40,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:40,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:40,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:40,249 INFO L87 Difference]: Start difference. First operand 13684 states and 16066 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:40,884 INFO L93 Difference]: Finished difference Result 27167 states and 31917 transitions. [2024-10-12 15:17:40,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:40,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 212 [2024-10-12 15:17:40,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:40,905 INFO L225 Difference]: With dead ends: 27167 [2024-10-12 15:17:40,905 INFO L226 Difference]: Without dead ends: 13687 [2024-10-12 15:17:40,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:40,918 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 262 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:40,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 339 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:17:40,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13687 states. [2024-10-12 15:17:41,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13687 to 13278. [2024-10-12 15:17:41,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13278 states, 13277 states have (on average 1.1567372147322437) internal successors, (15358), 13277 states have internal predecessors, (15358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13278 states to 13278 states and 15358 transitions. [2024-10-12 15:17:41,051 INFO L78 Accepts]: Start accepts. Automaton has 13278 states and 15358 transitions. Word has length 212 [2024-10-12 15:17:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:41,051 INFO L471 AbstractCegarLoop]: Abstraction has 13278 states and 15358 transitions. [2024-10-12 15:17:41,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 13278 states and 15358 transitions. [2024-10-12 15:17:41,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-10-12 15:17:41,065 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:41,065 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:41,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 15:17:41,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:41,266 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:41,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:41,267 INFO L85 PathProgramCache]: Analyzing trace with hash 682656476, now seen corresponding path program 1 times [2024-10-12 15:17:41,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:41,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112940090] [2024-10-12 15:17:41,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:41,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 86 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 15:17:41,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:41,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112940090] [2024-10-12 15:17:41,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112940090] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:41,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269525494] [2024-10-12 15:17:41,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:41,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:41,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:41,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:17:41,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 15:17:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:41,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:17:41,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-12 15:17:41,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:41,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269525494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:41,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:41,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:17:41,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624104989] [2024-10-12 15:17:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:41,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:41,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:41,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:41,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:41,807 INFO L87 Difference]: Start difference. First operand 13278 states and 15358 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:42,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:42,398 INFO L93 Difference]: Finished difference Result 26355 states and 30501 transitions. [2024-10-12 15:17:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:42,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 224 [2024-10-12 15:17:42,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:42,415 INFO L225 Difference]: With dead ends: 26355 [2024-10-12 15:17:42,416 INFO L226 Difference]: Without dead ends: 13281 [2024-10-12 15:17:42,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:42,428 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 129 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:42,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 97 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:17:42,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13281 states. [2024-10-12 15:17:42,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13281 to 13278. [2024-10-12 15:17:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13278 states, 13277 states have (on average 1.1531219401973338) internal successors, (15310), 13277 states have internal predecessors, (15310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13278 states to 13278 states and 15310 transitions. [2024-10-12 15:17:42,559 INFO L78 Accepts]: Start accepts. Automaton has 13278 states and 15310 transitions. Word has length 224 [2024-10-12 15:17:42,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:42,560 INFO L471 AbstractCegarLoop]: Abstraction has 13278 states and 15310 transitions. [2024-10-12 15:17:42,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:42,560 INFO L276 IsEmpty]: Start isEmpty. Operand 13278 states and 15310 transitions. [2024-10-12 15:17:42,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-10-12 15:17:42,579 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:42,579 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:42,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 15:17:42,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:42,780 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:42,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:42,781 INFO L85 PathProgramCache]: Analyzing trace with hash 221495857, now seen corresponding path program 1 times [2024-10-12 15:17:42,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:42,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510137514] [2024-10-12 15:17:42,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:42,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:17:43,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:43,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510137514] [2024-10-12 15:17:43,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510137514] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:43,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:43,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:17:43,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603125139] [2024-10-12 15:17:43,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:43,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:17:43,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:43,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:17:43,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:17:43,074 INFO L87 Difference]: Start difference. First operand 13278 states and 15310 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:43,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:43,782 INFO L93 Difference]: Finished difference Result 37530 states and 43369 transitions. [2024-10-12 15:17:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:17:43,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 247 [2024-10-12 15:17:43,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:43,810 INFO L225 Difference]: With dead ends: 37530 [2024-10-12 15:17:43,810 INFO L226 Difference]: Without dead ends: 24456 [2024-10-12 15:17:43,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:17:43,824 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 533 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:43,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 49 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:17:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24456 states. [2024-10-12 15:17:43,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24456 to 24451. [2024-10-12 15:17:44,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24451 states, 24450 states have (on average 1.1483844580777096) internal successors, (28078), 24450 states have internal predecessors, (28078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24451 states to 24451 states and 28078 transitions. [2024-10-12 15:17:44,040 INFO L78 Accepts]: Start accepts. Automaton has 24451 states and 28078 transitions. Word has length 247 [2024-10-12 15:17:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:44,040 INFO L471 AbstractCegarLoop]: Abstraction has 24451 states and 28078 transitions. [2024-10-12 15:17:44,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:44,040 INFO L276 IsEmpty]: Start isEmpty. Operand 24451 states and 28078 transitions. [2024-10-12 15:17:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-10-12 15:17:44,110 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:44,111 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:17:44,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 15:17:44,112 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:44,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:44,112 INFO L85 PathProgramCache]: Analyzing trace with hash -198156381, now seen corresponding path program 1 times [2024-10-12 15:17:44,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:44,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028652828] [2024-10-12 15:17:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-12 15:17:44,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:44,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028652828] [2024-10-12 15:17:44,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028652828] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:44,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41098084] [2024-10-12 15:17:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:44,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:44,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:44,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:17:44,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 15:17:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:44,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:17:44,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-12 15:17:44,782 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:44,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41098084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:44,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:44,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:17:44,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495761412] [2024-10-12 15:17:44,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:44,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:44,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:44,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:44,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:44,787 INFO L87 Difference]: Start difference. First operand 24451 states and 28078 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:45,455 INFO L93 Difference]: Finished difference Result 68657 states and 78915 transitions. [2024-10-12 15:17:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:45,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 258 [2024-10-12 15:17:45,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:45,502 INFO L225 Difference]: With dead ends: 68657 [2024-10-12 15:17:45,502 INFO L226 Difference]: Without dead ends: 44410 [2024-10-12 15:17:45,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:45,524 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 108 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:45,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 98 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:17:45,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44410 states. [2024-10-12 15:17:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44410 to 41553. [2024-10-12 15:17:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41553 states, 41552 states have (on average 1.1289227955333077) internal successors, (46909), 41552 states have internal predecessors, (46909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41553 states to 41553 states and 46909 transitions. [2024-10-12 15:17:46,006 INFO L78 Accepts]: Start accepts. Automaton has 41553 states and 46909 transitions. Word has length 258 [2024-10-12 15:17:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:46,006 INFO L471 AbstractCegarLoop]: Abstraction has 41553 states and 46909 transitions. [2024-10-12 15:17:46,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:46,007 INFO L276 IsEmpty]: Start isEmpty. Operand 41553 states and 46909 transitions. [2024-10-12 15:17:46,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-10-12 15:17:46,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:46,026 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 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, 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] [2024-10-12 15:17:46,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 15:17:46,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 15:17:46,227 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:46,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:46,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1663358502, now seen corresponding path program 1 times [2024-10-12 15:17:46,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:46,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698891078] [2024-10-12 15:17:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:46,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 148 proven. 6 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-12 15:17:47,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:47,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698891078] [2024-10-12 15:17:47,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698891078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:47,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432300540] [2024-10-12 15:17:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:47,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:47,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:47,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:17:47,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 15:17:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:47,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:17:47,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-12 15:17:47,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:47,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432300540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:47,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:47,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-12 15:17:47,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367762603] [2024-10-12 15:17:47,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:47,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:47,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:47,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:17:47,424 INFO L87 Difference]: Start difference. First operand 41553 states and 46909 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:47,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:47,955 INFO L93 Difference]: Finished difference Result 82492 states and 93089 transitions. [2024-10-12 15:17:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:47,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2024-10-12 15:17:47,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:48,003 INFO L225 Difference]: With dead ends: 82492 [2024-10-12 15:17:48,004 INFO L226 Difference]: Without dead ends: 41143 [2024-10-12 15:17:48,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:17:48,033 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 276 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:48,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 27 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:17:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41143 states. [2024-10-12 15:17:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41143 to 41143. [2024-10-12 15:17:48,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41143 states, 41142 states have (on average 1.127679743327986) internal successors, (46395), 41142 states have internal predecessors, (46395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41143 states to 41143 states and 46395 transitions. [2024-10-12 15:17:48,441 INFO L78 Accepts]: Start accepts. Automaton has 41143 states and 46395 transitions. Word has length 291 [2024-10-12 15:17:48,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:48,441 INFO L471 AbstractCegarLoop]: Abstraction has 41143 states and 46395 transitions. [2024-10-12 15:17:48,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 41143 states and 46395 transitions. [2024-10-12 15:17:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-10-12 15:17:48,460 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:48,461 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 15:17:48,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 15:17:48,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 15:17:48,662 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:48,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:48,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1846057240, now seen corresponding path program 1 times [2024-10-12 15:17:48,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:48,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678895136] [2024-10-12 15:17:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:48,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-12 15:17:48,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:48,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678895136] [2024-10-12 15:17:48,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678895136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:48,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:48,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:48,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312154300] [2024-10-12 15:17:48,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:48,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:48,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:48,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:48,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:48,806 INFO L87 Difference]: Start difference. First operand 41143 states and 46395 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:49,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:49,476 INFO L93 Difference]: Finished difference Result 119289 states and 134543 transitions. [2024-10-12 15:17:49,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:49,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 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 315 [2024-10-12 15:17:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:49,564 INFO L225 Difference]: With dead ends: 119289 [2024-10-12 15:17:49,564 INFO L226 Difference]: Without dead ends: 78350 [2024-10-12 15:17:49,597 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 [2024-10-12 15:17:49,598 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 231 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:49,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 475 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 15:17:49,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78350 states. [2024-10-12 15:17:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78350 to 78348. [2024-10-12 15:17:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78348 states, 78347 states have (on average 1.1273692674895017) internal successors, (88326), 78347 states have internal predecessors, (88326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78348 states to 78348 states and 88326 transitions. [2024-10-12 15:17:50,735 INFO L78 Accepts]: Start accepts. Automaton has 78348 states and 88326 transitions. Word has length 315 [2024-10-12 15:17:50,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:50,735 INFO L471 AbstractCegarLoop]: Abstraction has 78348 states and 88326 transitions. [2024-10-12 15:17:50,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 78348 states and 88326 transitions. [2024-10-12 15:17:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-10-12 15:17:50,764 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:50,764 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:50,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 15:17:50,764 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:50,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:50,765 INFO L85 PathProgramCache]: Analyzing trace with hash -994756029, now seen corresponding path program 1 times [2024-10-12 15:17:50,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:50,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96960645] [2024-10-12 15:17:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:50,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-12 15:17:52,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:52,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96960645] [2024-10-12 15:17:52,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96960645] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:52,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091634934] [2024-10-12 15:17:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:52,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:52,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:52,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:17:52,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 15:17:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:52,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:17:52,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-12 15:17:52,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:52,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091634934] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:52,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:52,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:17:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625063574] [2024-10-12 15:17:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:52,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:17:52,533 INFO L87 Difference]: Start difference. First operand 78348 states and 88326 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:53,735 INFO L93 Difference]: Finished difference Result 177911 states and 200268 transitions. [2024-10-12 15:17:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:53,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 319 [2024-10-12 15:17:53,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:53,865 INFO L225 Difference]: With dead ends: 177911 [2024-10-12 15:17:53,866 INFO L226 Difference]: Without dead ends: 99767 [2024-10-12 15:17:53,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:17:53,926 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 162 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:53,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 138 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:17:53,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99767 states. [2024-10-12 15:17:55,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99767 to 98941. [2024-10-12 15:17:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98941 states, 98940 states have (on average 1.112603598140287) internal successors, (110081), 98940 states have internal predecessors, (110081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98941 states to 98941 states and 110081 transitions. [2024-10-12 15:17:55,437 INFO L78 Accepts]: Start accepts. Automaton has 98941 states and 110081 transitions. Word has length 319 [2024-10-12 15:17:55,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:55,437 INFO L471 AbstractCegarLoop]: Abstraction has 98941 states and 110081 transitions. [2024-10-12 15:17:55,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:55,438 INFO L276 IsEmpty]: Start isEmpty. Operand 98941 states and 110081 transitions. [2024-10-12 15:17:55,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-10-12 15:17:55,473 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:55,473 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:55,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 15:17:55,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:55,675 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:55,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:55,676 INFO L85 PathProgramCache]: Analyzing trace with hash -893066036, now seen corresponding path program 1 times [2024-10-12 15:17:55,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:55,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171830094] [2024-10-12 15:17:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:55,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-12 15:17:56,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:56,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171830094] [2024-10-12 15:17:56,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171830094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:56,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:56,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:17:56,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27048591] [2024-10-12 15:17:56,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:56,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:56,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:56,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:56,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:56,173 INFO L87 Difference]: Start difference. First operand 98941 states and 110081 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:57,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:57,284 INFO L93 Difference]: Finished difference Result 183573 states and 203983 transitions. [2024-10-12 15:17:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:57,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 327 [2024-10-12 15:17:57,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:57,385 INFO L225 Difference]: With dead ends: 183573 [2024-10-12 15:17:57,385 INFO L226 Difference]: Without dead ends: 84836 [2024-10-12 15:17:57,432 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 [2024-10-12 15:17:57,433 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 243 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:57,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 333 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:17:57,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84836 states. [2024-10-12 15:17:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84836 to 83005. [2024-10-12 15:17:58,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83005 states, 83004 states have (on average 1.0899595200231313) internal successors, (90471), 83004 states have internal predecessors, (90471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83005 states to 83005 states and 90471 transitions. [2024-10-12 15:17:58,551 INFO L78 Accepts]: Start accepts. Automaton has 83005 states and 90471 transitions. Word has length 327 [2024-10-12 15:17:58,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:58,551 INFO L471 AbstractCegarLoop]: Abstraction has 83005 states and 90471 transitions. [2024-10-12 15:17:58,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 83005 states and 90471 transitions. [2024-10-12 15:17:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-10-12 15:17:58,583 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:58,583 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:17:58,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 15:17:58,584 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:58,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1692616156, now seen corresponding path program 1 times [2024-10-12 15:17:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:58,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114838091] [2024-10-12 15:17:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:58,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-12 15:17:58,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:58,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114838091] [2024-10-12 15:17:58,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114838091] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:58,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:58,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:17:58,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98329939] [2024-10-12 15:17:58,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:58,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:58,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:58,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:58,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:58,936 INFO L87 Difference]: Start difference. First operand 83005 states and 90471 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:59,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:59,903 INFO L93 Difference]: Finished difference Result 140999 states and 153247 transitions. [2024-10-12 15:17:59,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:59,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 346 [2024-10-12 15:17:59,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:59,977 INFO L225 Difference]: With dead ends: 140999 [2024-10-12 15:17:59,977 INFO L226 Difference]: Without dead ends: 58198 [2024-10-12 15:18:00,034 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 [2024-10-12 15:18:00,034 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 225 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:00,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 329 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:18:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58198 states. [2024-10-12 15:18:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58198 to 57373. [2024-10-12 15:18:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57373 states, 57372 states have (on average 1.0763961514327547) internal successors, (61755), 57372 states have internal predecessors, (61755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57373 states to 57373 states and 61755 transitions. [2024-10-12 15:18:00,852 INFO L78 Accepts]: Start accepts. Automaton has 57373 states and 61755 transitions. Word has length 346 [2024-10-12 15:18:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:00,852 INFO L471 AbstractCegarLoop]: Abstraction has 57373 states and 61755 transitions. [2024-10-12 15:18:00,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:00,853 INFO L276 IsEmpty]: Start isEmpty. Operand 57373 states and 61755 transitions. [2024-10-12 15:18:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-10-12 15:18:00,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:00,881 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:00,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 15:18:00,882 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:00,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1562580812, now seen corresponding path program 1 times [2024-10-12 15:18:00,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:00,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794417174] [2024-10-12 15:18:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:00,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 279 proven. 6 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-10-12 15:18:02,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:02,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794417174] [2024-10-12 15:18:02,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794417174] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:18:02,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93002376] [2024-10-12 15:18:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:02,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:02,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:02,668 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:18:02,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 15:18:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:02,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:18:02,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:18:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 442 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-10-12 15:18:03,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:18:03,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93002376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:03,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:18:03,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:18:03,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559765846] [2024-10-12 15:18:03,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:03,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:03,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:03,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:03,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:18:03,011 INFO L87 Difference]: Start difference. First operand 57373 states and 61755 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:03,732 INFO L93 Difference]: Finished difference Result 143052 states and 153732 transitions. [2024-10-12 15:18:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:03,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 419 [2024-10-12 15:18:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:03,834 INFO L225 Difference]: With dead ends: 143052 [2024-10-12 15:18:03,834 INFO L226 Difference]: Without dead ends: 85883 [2024-10-12 15:18:04,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:18:04,006 INFO L432 NwaCegarLoop]: 565 mSDtfsCounter, 262 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:04,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 786 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:18:04,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85883 states. [2024-10-12 15:18:04,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85883 to 85475. [2024-10-12 15:18:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85475 states, 85474 states have (on average 1.0702669817722348) internal successors, (91480), 85474 states have internal predecessors, (91480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85475 states to 85475 states and 91480 transitions. [2024-10-12 15:18:04,968 INFO L78 Accepts]: Start accepts. Automaton has 85475 states and 91480 transitions. Word has length 419 [2024-10-12 15:18:04,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:04,969 INFO L471 AbstractCegarLoop]: Abstraction has 85475 states and 91480 transitions. [2024-10-12 15:18:04,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:04,969 INFO L276 IsEmpty]: Start isEmpty. Operand 85475 states and 91480 transitions. [2024-10-12 15:18:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-10-12 15:18:05,003 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:05,004 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:05,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 15:18:05,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:05,205 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:05,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:05,205 INFO L85 PathProgramCache]: Analyzing trace with hash -359490416, now seen corresponding path program 1 times [2024-10-12 15:18:05,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:05,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380628720] [2024-10-12 15:18:05,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:05,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-12 15:18:05,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:05,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380628720] [2024-10-12 15:18:05,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380628720] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:05,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:18:05,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:18:05,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291660479] [2024-10-12 15:18:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:05,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:18:05,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:05,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:18:05,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:18:05,711 INFO L87 Difference]: Start difference. First operand 85475 states and 91480 transitions. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:06,868 INFO L93 Difference]: Finished difference Result 229756 states and 246130 transitions. [2024-10-12 15:18:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:18:06,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 447 [2024-10-12 15:18:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:07,314 INFO L225 Difference]: With dead ends: 229756 [2024-10-12 15:18:07,314 INFO L226 Difference]: Without dead ends: 144485 [2024-10-12 15:18:07,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:18:07,373 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 360 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:07,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 460 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:18:07,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144485 states. [2024-10-12 15:18:09,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144485 to 140197. [2024-10-12 15:18:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140197 states, 140196 states have (on average 1.0716568233045165) internal successors, (150242), 140196 states have internal predecessors, (150242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:09,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140197 states to 140197 states and 150242 transitions. [2024-10-12 15:18:09,797 INFO L78 Accepts]: Start accepts. Automaton has 140197 states and 150242 transitions. Word has length 447 [2024-10-12 15:18:09,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:09,797 INFO L471 AbstractCegarLoop]: Abstraction has 140197 states and 150242 transitions. [2024-10-12 15:18:09,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 140197 states and 150242 transitions. [2024-10-12 15:18:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-10-12 15:18:09,845 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:09,846 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:09,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 15:18:09,846 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:09,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:09,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1353947637, now seen corresponding path program 1 times [2024-10-12 15:18:09,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:09,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397817972] [2024-10-12 15:18:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:09,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 319 proven. 6 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-10-12 15:18:11,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:11,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397817972] [2024-10-12 15:18:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397817972] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:18:11,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831586419] [2024-10-12 15:18:11,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:11,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:11,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:11,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:18:11,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 15:18:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:11,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 15:18:11,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:18:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-10-12 15:18:11,739 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:18:11,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831586419] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:11,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:18:11,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:18:11,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993094177] [2024-10-12 15:18:11,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:11,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:18:11,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:11,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:18:11,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 15:18:11,742 INFO L87 Difference]: Start difference. First operand 140197 states and 150242 transitions. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:13,211 INFO L93 Difference]: Finished difference Result 382319 states and 409814 transitions. [2024-10-12 15:18:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:18:13,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 453 [2024-10-12 15:18:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:13,511 INFO L225 Difference]: With dead ends: 382319 [2024-10-12 15:18:13,511 INFO L226 Difference]: Without dead ends: 242326 [2024-10-12 15:18:13,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 15:18:13,985 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 636 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:13,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 308 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:18:14,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242326 states. [2024-10-12 15:18:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242326 to 237420. [2024-10-12 15:18:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237420 states, 237419 states have (on average 1.0720203522043308) internal successors, (254518), 237419 states have internal predecessors, (254518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237420 states to 237420 states and 254518 transitions. [2024-10-12 15:18:17,700 INFO L78 Accepts]: Start accepts. Automaton has 237420 states and 254518 transitions. Word has length 453 [2024-10-12 15:18:17,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:17,700 INFO L471 AbstractCegarLoop]: Abstraction has 237420 states and 254518 transitions. [2024-10-12 15:18:17,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand 237420 states and 254518 transitions. [2024-10-12 15:18:17,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-10-12 15:18:17,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:17,756 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:18:17,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 15:18:17,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:17,957 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:17,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash 534749360, now seen corresponding path program 1 times [2024-10-12 15:18:17,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:17,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944479379] [2024-10-12 15:18:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:17,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 279 proven. 6 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2024-10-12 15:18:19,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:19,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944479379] [2024-10-12 15:18:19,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944479379] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:18:19,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081299371] [2024-10-12 15:18:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:19,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:19,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:19,866 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:18:19,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 15:18:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:20,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:18:20,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:18:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-10-12 15:18:20,088 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:18:20,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081299371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:20,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:18:20,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:18:20,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782247667] [2024-10-12 15:18:20,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:20,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:20,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:20,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:18:20,089 INFO L87 Difference]: Start difference. First operand 237420 states and 254518 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:18:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:21,686 INFO L93 Difference]: Finished difference Result 617759 states and 662667 transitions. [2024-10-12 15:18:21,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:21,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 471 [2024-10-12 15:18:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:22,632 INFO L225 Difference]: With dead ends: 617759 [2024-10-12 15:18:22,633 INFO L226 Difference]: Without dead ends: 380543 [2024-10-12 15:18:22,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:18:22,677 INFO L432 NwaCegarLoop]: 581 mSDtfsCounter, 296 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:22,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 840 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 15:18:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380543 states.