./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/Problem18_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label20.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 839a6dcefe0eda0c15199e733b50fa28a6af9f9aed319dba01e519ca448457f3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 23:51:51,457 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 23:51:51,513 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 23:51:51,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 23:51:51,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 23:51:51,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 23:51:51,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 23:51:51,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 23:51:51,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 23:51:51,536 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 23:51:51,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 23:51:51,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 23:51:51,537 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 23:51:51,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 23:51:51,537 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 23:51:51,539 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 23:51:51,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 23:51:51,539 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 23:51:51,539 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 23:51:51,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 23:51:51,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 23:51:51,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 23:51:51,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 23:51:51,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 23:51:51,541 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 23:51:51,541 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 23:51:51,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 23:51:51,542 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 23:51:51,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 23:51:51,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 23:51:51,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 23:51:51,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 23:51:51,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:51:51,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 23:51:51,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 23:51:51,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 23:51:51,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 23:51:51,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 23:51:51,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 23:51:51,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 23:51:51,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 23:51:51,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 23:51:51,545 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 839a6dcefe0eda0c15199e733b50fa28a6af9f9aed319dba01e519ca448457f3 [2024-10-10 23:51:51,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 23:51:51,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 23:51:51,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 23:51:51,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 23:51:51,771 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 23:51:51,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label20.c [2024-10-10 23:51:52,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 23:51:53,252 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 23:51:53,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label20.c [2024-10-10 23:51:53,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dbc84488e/10b092d4590343f0b65607b422e63137/FLAGbf4cac016 [2024-10-10 23:51:53,289 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dbc84488e/10b092d4590343f0b65607b422e63137 [2024-10-10 23:51:53,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 23:51:53,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 23:51:53,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 23:51:53,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 23:51:53,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 23:51:53,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:51:53" (1/1) ... [2024-10-10 23:51:53,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b53c6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:53, skipping insertion in model container [2024-10-10 23:51:53,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:51:53" (1/1) ... [2024-10-10 23:51:53,365 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 23:51:53,500 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/Problem18_label20.c[1084,1097] [2024-10-10 23:51:53,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:51:53,913 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 23:51:53,923 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/Problem18_label20.c[1084,1097] [2024-10-10 23:51:54,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:51:54,179 INFO L204 MainTranslator]: Completed translation [2024-10-10 23:51:54,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54 WrapperNode [2024-10-10 23:51:54,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 23:51:54,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 23:51:54,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 23:51:54,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 23:51:54,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,325 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4135 [2024-10-10 23:51:54,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 23:51:54,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 23:51:54,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 23:51:54,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 23:51:54,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,452 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]. [2024-10-10 23:51:54,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,503 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 23:51:54,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 23:51:54,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 23:51:54,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 23:51:54,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (1/1) ... [2024-10-10 23:51:54,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:51:54,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:51:54,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 23:51:54,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 23:51:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 23:51:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 23:51:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 23:51:54,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 23:51:54,722 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 23:51:54,724 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 23:51:57,161 INFO L? ?]: Removed 639 outVars from TransFormulas that were not future-live. [2024-10-10 23:51:57,161 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 23:51:57,214 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 23:51:57,214 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 23:51:57,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:51:57 BoogieIcfgContainer [2024-10-10 23:51:57,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 23:51:57,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 23:51:57,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 23:51:57,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 23:51:57,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:51:53" (1/3) ... [2024-10-10 23:51:57,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359a1a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:51:57, skipping insertion in model container [2024-10-10 23:51:57,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:54" (2/3) ... [2024-10-10 23:51:57,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359a1a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:51:57, skipping insertion in model container [2024-10-10 23:51:57,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:51:57" (3/3) ... [2024-10-10 23:51:57,223 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label20.c [2024-10-10 23:51:57,236 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 23:51:57,237 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 23:51:57,302 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 23:51:57,307 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;@324620f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 23:51:57,307 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 23:51:57,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:51:57,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-10 23:51:57,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:51:57,316 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-10 23:51:57,317 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:51:57,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:51:57,321 INFO L85 PathProgramCache]: Analyzing trace with hash -897913371, now seen corresponding path program 1 times [2024-10-10 23:51:57,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:51:57,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784790681] [2024-10-10 23:51:57,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:51:57,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:51:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:51:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:51:57,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:51:57,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784790681] [2024-10-10 23:51:57,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784790681] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:51:57,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:51:57,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:51:57,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219472790] [2024-10-10 23:51:57,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:51:57,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:51:57,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:51:57,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:51:57,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:51:57,566 INFO L87 Difference]: Start difference. First operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:51:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:51:59,905 INFO L93 Difference]: Finished difference Result 2081 states and 4142 transitions. [2024-10-10 23:51:59,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:51:59,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2024-10-10 23:51:59,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:51:59,952 INFO L225 Difference]: With dead ends: 2081 [2024-10-10 23:51:59,952 INFO L226 Difference]: Without dead ends: 1383 [2024-10-10 23:51:59,957 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 [2024-10-10 23:51:59,959 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 708 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:51:59,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 467 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-10 23:51:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2024-10-10 23:52:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2024-10-10 23:52:00,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.5781476121562952) internal successors, (2181), 1382 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2181 transitions. [2024-10-10 23:52:00,051 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2181 transitions. Word has length 5 [2024-10-10 23:52:00,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:00,051 INFO L471 AbstractCegarLoop]: Abstraction has 1383 states and 2181 transitions. [2024-10-10 23:52:00,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2181 transitions. [2024-10-10 23:52:00,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-10 23:52:00,053 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:00,054 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-10 23:52:00,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 23:52:00,054 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:00,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:00,055 INFO L85 PathProgramCache]: Analyzing trace with hash 681451534, now seen corresponding path program 1 times [2024-10-10 23:52:00,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:00,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183958822] [2024-10-10 23:52:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:00,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:52:00,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:00,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183958822] [2024-10-10 23:52:00,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183958822] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:00,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:00,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:52:00,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924031269] [2024-10-10 23:52:00,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:00,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:00,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:00,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:00,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:00,235 INFO L87 Difference]: Start difference. First operand 1383 states and 2181 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:02,355 INFO L93 Difference]: Finished difference Result 4145 states and 6540 transitions. [2024-10-10 23:52:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:02,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2024-10-10 23:52:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:02,365 INFO L225 Difference]: With dead ends: 4145 [2024-10-10 23:52:02,365 INFO L226 Difference]: Without dead ends: 2763 [2024-10-10 23:52:02,368 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 [2024-10-10 23:52:02,369 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 713 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:02,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 527 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-10 23:52:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2024-10-10 23:52:02,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2024-10-10 23:52:02,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.3482983345401882) internal successors, (3724), 2762 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3724 transitions. [2024-10-10 23:52:02,408 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3724 transitions. Word has length 71 [2024-10-10 23:52:02,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:02,408 INFO L471 AbstractCegarLoop]: Abstraction has 2763 states and 3724 transitions. [2024-10-10 23:52:02,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:02,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3724 transitions. [2024-10-10 23:52:02,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-10 23:52:02,412 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:02,412 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-10 23:52:02,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 23:52:02,413 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:02,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:02,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1534949916, now seen corresponding path program 1 times [2024-10-10 23:52:02,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:02,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800077939] [2024-10-10 23:52:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:02,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:52:02,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:02,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800077939] [2024-10-10 23:52:02,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800077939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:02,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:02,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:52:02,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031392249] [2024-10-10 23:52:02,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:02,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:02,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:02,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:02,548 INFO L87 Difference]: Start difference. First operand 2763 states and 3724 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:04,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:04,699 INFO L93 Difference]: Finished difference Result 8287 states and 11170 transitions. [2024-10-10 23:52:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:04,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-10-10 23:52:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:04,714 INFO L225 Difference]: With dead ends: 8287 [2024-10-10 23:52:04,715 INFO L226 Difference]: Without dead ends: 5525 [2024-10-10 23:52:04,718 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 [2024-10-10 23:52:04,719 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 690 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:04,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 432 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-10 23:52:04,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2024-10-10 23:52:04,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 5523. [2024-10-10 23:52:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 1.2299891343716045) internal successors, (6792), 5522 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:04,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 6792 transitions. [2024-10-10 23:52:04,810 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 6792 transitions. Word has length 91 [2024-10-10 23:52:04,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:04,810 INFO L471 AbstractCegarLoop]: Abstraction has 5523 states and 6792 transitions. [2024-10-10 23:52:04,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:04,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 6792 transitions. [2024-10-10 23:52:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-10 23:52:04,812 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:04,813 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-10 23:52:04,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 23:52:04,813 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:04,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:04,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1861677479, now seen corresponding path program 1 times [2024-10-10 23:52:04,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:04,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230111139] [2024-10-10 23:52:04,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:04,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:52:04,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230111139] [2024-10-10 23:52:04,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230111139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:04,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:04,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182772404] [2024-10-10 23:52:04,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:04,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:04,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:04,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:04,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:04,973 INFO L87 Difference]: Start difference. First operand 5523 states and 6792 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:06,754 INFO L93 Difference]: Finished difference Result 13805 states and 17313 transitions. [2024-10-10 23:52:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:06,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2024-10-10 23:52:06,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:06,770 INFO L225 Difference]: With dead ends: 13805 [2024-10-10 23:52:06,770 INFO L226 Difference]: Without dead ends: 6903 [2024-10-10 23:52:06,776 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 [2024-10-10 23:52:06,777 INFO L432 NwaCegarLoop]: 1193 mSDtfsCounter, 749 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 904 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 904 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:06,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1199 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [904 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-10 23:52:06,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6903 states. [2024-10-10 23:52:06,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6903 to 6903. [2024-10-10 23:52:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6903 states, 6902 states have (on average 1.0921472037090698) internal successors, (7538), 6902 states have internal predecessors, (7538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:06,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6903 states to 6903 states and 7538 transitions. [2024-10-10 23:52:06,852 INFO L78 Accepts]: Start accepts. Automaton has 6903 states and 7538 transitions. Word has length 98 [2024-10-10 23:52:06,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:06,852 INFO L471 AbstractCegarLoop]: Abstraction has 6903 states and 7538 transitions. [2024-10-10 23:52:06,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 6903 states and 7538 transitions. [2024-10-10 23:52:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-10-10 23:52:06,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:06,860 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:06,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 23:52:06,860 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:06,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:06,861 INFO L85 PathProgramCache]: Analyzing trace with hash -339730054, now seen corresponding path program 1 times [2024-10-10 23:52:06,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:06,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755869692] [2024-10-10 23:52:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:06,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-10 23:52:07,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:07,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755869692] [2024-10-10 23:52:07,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755869692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:07,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:07,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:07,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745444311] [2024-10-10 23:52:07,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:07,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:52:07,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:07,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:52:07,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:52:07,392 INFO L87 Difference]: Start difference. First operand 6903 states and 7538 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:09,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:09,400 INFO L93 Difference]: Finished difference Result 15185 states and 16475 transitions. [2024-10-10 23:52:09,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:52:09,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 308 [2024-10-10 23:52:09,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:09,418 INFO L225 Difference]: With dead ends: 15185 [2024-10-10 23:52:09,418 INFO L226 Difference]: Without dead ends: 8283 [2024-10-10 23:52:09,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:52:09,426 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 1873 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:09,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 316 Invalid, 3368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-10 23:52:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8283 states. [2024-10-10 23:52:09,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8283 to 8283. [2024-10-10 23:52:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8283 states, 8282 states have (on average 1.0787249456652983) internal successors, (8934), 8282 states have internal predecessors, (8934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8283 states to 8283 states and 8934 transitions. [2024-10-10 23:52:09,516 INFO L78 Accepts]: Start accepts. Automaton has 8283 states and 8934 transitions. Word has length 308 [2024-10-10 23:52:09,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:09,516 INFO L471 AbstractCegarLoop]: Abstraction has 8283 states and 8934 transitions. [2024-10-10 23:52:09,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:09,517 INFO L276 IsEmpty]: Start isEmpty. Operand 8283 states and 8934 transitions. [2024-10-10 23:52:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-10-10 23:52:09,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:09,520 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:09,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 23:52:09,520 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:09,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:09,520 INFO L85 PathProgramCache]: Analyzing trace with hash 662965452, now seen corresponding path program 1 times [2024-10-10 23:52:09,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:09,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037082232] [2024-10-10 23:52:09,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:09,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-10 23:52:09,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:09,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037082232] [2024-10-10 23:52:09,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037082232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:09,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:09,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:09,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377220628] [2024-10-10 23:52:09,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:09,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:09,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:09,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:09,839 INFO L87 Difference]: Start difference. First operand 8283 states and 8934 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:11,240 INFO L93 Difference]: Finished difference Result 19325 states and 21065 transitions. [2024-10-10 23:52:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 390 [2024-10-10 23:52:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:11,269 INFO L225 Difference]: With dead ends: 19325 [2024-10-10 23:52:11,269 INFO L226 Difference]: Without dead ends: 11043 [2024-10-10 23:52:11,277 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 [2024-10-10 23:52:11,278 INFO L432 NwaCegarLoop]: 970 mSDtfsCounter, 687 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:11,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 976 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-10 23:52:11,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11043 states. [2024-10-10 23:52:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11043 to 11043. [2024-10-10 23:52:11,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11043 states, 11042 states have (on average 1.0681941677232385) internal successors, (11795), 11042 states have internal predecessors, (11795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11043 states to 11043 states and 11795 transitions. [2024-10-10 23:52:11,443 INFO L78 Accepts]: Start accepts. Automaton has 11043 states and 11795 transitions. Word has length 390 [2024-10-10 23:52:11,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:11,445 INFO L471 AbstractCegarLoop]: Abstraction has 11043 states and 11795 transitions. [2024-10-10 23:52:11,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:11,446 INFO L276 IsEmpty]: Start isEmpty. Operand 11043 states and 11795 transitions. [2024-10-10 23:52:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-10-10 23:52:11,452 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:11,452 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:11,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 23:52:11,453 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:11,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:11,453 INFO L85 PathProgramCache]: Analyzing trace with hash -918611629, now seen corresponding path program 1 times [2024-10-10 23:52:11,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:11,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739069605] [2024-10-10 23:52:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:11,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-10-10 23:52:12,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:12,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739069605] [2024-10-10 23:52:12,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739069605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:12,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:12,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:12,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821369806] [2024-10-10 23:52:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:12,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:12,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:12,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:12,058 INFO L87 Difference]: Start difference. First operand 11043 states and 11795 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:13,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:13,400 INFO L93 Difference]: Finished difference Result 22085 states and 23589 transitions. [2024-10-10 23:52:13,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:13,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 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 457 [2024-10-10 23:52:13,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:13,417 INFO L225 Difference]: With dead ends: 22085 [2024-10-10 23:52:13,417 INFO L226 Difference]: Without dead ends: 11043 [2024-10-10 23:52:13,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:13,427 INFO L432 NwaCegarLoop]: 737 mSDtfsCounter, 791 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:13,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 743 Invalid, 1854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-10 23:52:13,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11043 states. [2024-10-10 23:52:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11043 to 11043. [2024-10-10 23:52:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11043 states, 11042 states have (on average 1.05868502082956) internal successors, (11690), 11042 states have internal predecessors, (11690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11043 states to 11043 states and 11690 transitions. [2024-10-10 23:52:13,523 INFO L78 Accepts]: Start accepts. Automaton has 11043 states and 11690 transitions. Word has length 457 [2024-10-10 23:52:13,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:13,524 INFO L471 AbstractCegarLoop]: Abstraction has 11043 states and 11690 transitions. [2024-10-10 23:52:13,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:13,525 INFO L276 IsEmpty]: Start isEmpty. Operand 11043 states and 11690 transitions. [2024-10-10 23:52:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-10-10 23:52:13,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:13,531 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:13,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-10 23:52:13,531 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:13,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1999338816, now seen corresponding path program 1 times [2024-10-10 23:52:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:13,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137385567] [2024-10-10 23:52:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:13,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-10-10 23:52:13,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:13,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137385567] [2024-10-10 23:52:13,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137385567] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:13,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:13,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:13,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643176307] [2024-10-10 23:52:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:13,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:13,805 INFO L87 Difference]: Start difference. First operand 11043 states and 11690 transitions. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:15,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:15,153 INFO L93 Difference]: Finished difference Result 24845 states and 26526 transitions. [2024-10-10 23:52:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:15,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 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 547 [2024-10-10 23:52:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:15,167 INFO L225 Difference]: With dead ends: 24845 [2024-10-10 23:52:15,167 INFO L226 Difference]: Without dead ends: 13803 [2024-10-10 23:52:15,176 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 [2024-10-10 23:52:15,177 INFO L432 NwaCegarLoop]: 930 mSDtfsCounter, 619 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:15,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 935 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-10 23:52:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13803 states. [2024-10-10 23:52:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13803 to 13113. [2024-10-10 23:52:15,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13113 states, 13112 states have (on average 1.0559029896278218) internal successors, (13845), 13112 states have internal predecessors, (13845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13113 states to 13113 states and 13845 transitions. [2024-10-10 23:52:15,281 INFO L78 Accepts]: Start accepts. Automaton has 13113 states and 13845 transitions. Word has length 547 [2024-10-10 23:52:15,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:15,282 INFO L471 AbstractCegarLoop]: Abstraction has 13113 states and 13845 transitions. [2024-10-10 23:52:15,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 13113 states and 13845 transitions. [2024-10-10 23:52:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2024-10-10 23:52:15,290 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:15,290 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:15,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-10 23:52:15,291 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:15,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1811000039, now seen corresponding path program 1 times [2024-10-10 23:52:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615627386] [2024-10-10 23:52:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:15,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:15,719 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 494 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-10-10 23:52:15,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:15,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615627386] [2024-10-10 23:52:15,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615627386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:15,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:15,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:15,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009766052] [2024-10-10 23:52:15,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:15,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:15,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:15,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:15,722 INFO L87 Difference]: Start difference. First operand 13113 states and 13845 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:17,098 INFO L93 Difference]: Finished difference Result 36575 states and 38696 transitions. [2024-10-10 23:52:17,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:17,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 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 608 [2024-10-10 23:52:17,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:17,122 INFO L225 Difference]: With dead ends: 36575 [2024-10-10 23:52:17,123 INFO L226 Difference]: Without dead ends: 22773 [2024-10-10 23:52:17,132 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 [2024-10-10 23:52:17,133 INFO L432 NwaCegarLoop]: 915 mSDtfsCounter, 574 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:17,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 921 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-10 23:52:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22773 states. [2024-10-10 23:52:17,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22773 to 22083. [2024-10-10 23:52:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22083 states, 22082 states have (on average 1.0450140385834616) internal successors, (23076), 22082 states have internal predecessors, (23076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22083 states to 22083 states and 23076 transitions. [2024-10-10 23:52:17,365 INFO L78 Accepts]: Start accepts. Automaton has 22083 states and 23076 transitions. Word has length 608 [2024-10-10 23:52:17,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:17,366 INFO L471 AbstractCegarLoop]: Abstraction has 22083 states and 23076 transitions. [2024-10-10 23:52:17,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 22083 states and 23076 transitions. [2024-10-10 23:52:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2024-10-10 23:52:17,378 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:17,378 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:17,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 23:52:17,379 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:17,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:17,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1817618236, now seen corresponding path program 1 times [2024-10-10 23:52:17,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:17,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744424994] [2024-10-10 23:52:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:17,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-10-10 23:52:17,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:17,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744424994] [2024-10-10 23:52:17,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744424994] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:17,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:17,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:17,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712851848] [2024-10-10 23:52:17,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:17,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:17,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:17,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:17,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:17,656 INFO L87 Difference]: Start difference. First operand 22083 states and 23076 transitions. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:19,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:19,121 INFO L93 Difference]: Finished difference Result 51755 states and 54354 transitions. [2024-10-10 23:52:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:19,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 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 680 [2024-10-10 23:52:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:19,150 INFO L225 Difference]: With dead ends: 51755 [2024-10-10 23:52:19,150 INFO L226 Difference]: Without dead ends: 29673 [2024-10-10 23:52:19,164 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 [2024-10-10 23:52:19,164 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 603 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:19,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 266 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-10 23:52:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29673 states. [2024-10-10 23:52:19,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29673 to 28983. [2024-10-10 23:52:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28983 states, 28982 states have (on average 1.0428541853564282) internal successors, (30224), 28982 states have internal predecessors, (30224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28983 states to 28983 states and 30224 transitions. [2024-10-10 23:52:19,393 INFO L78 Accepts]: Start accepts. Automaton has 28983 states and 30224 transitions. Word has length 680 [2024-10-10 23:52:19,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:19,393 INFO L471 AbstractCegarLoop]: Abstraction has 28983 states and 30224 transitions. [2024-10-10 23:52:19,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:19,394 INFO L276 IsEmpty]: Start isEmpty. Operand 28983 states and 30224 transitions. [2024-10-10 23:52:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1197 [2024-10-10 23:52:19,404 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:19,405 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:19,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 23:52:19,406 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:19,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:19,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1895712161, now seen corresponding path program 1 times [2024-10-10 23:52:19,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:19,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007317381] [2024-10-10 23:52:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:19,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 20 proven. 673 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2024-10-10 23:52:20,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:20,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007317381] [2024-10-10 23:52:20,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007317381] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:52:20,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47026758] [2024-10-10 23:52:20,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:20,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:20,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:52:20,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:52:20,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 23:52:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:20,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:52:20,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:52:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2024-10-10 23:52:20,994 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:52:20,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47026758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:20,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:52:20,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 23:52:20,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308344520] [2024-10-10 23:52:20,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:20,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:20,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:20,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:20,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:52:20,997 INFO L87 Difference]: Start difference. First operand 28983 states and 30224 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:22,336 INFO L93 Difference]: Finished difference Result 57275 states and 59756 transitions. [2024-10-10 23:52:22,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:22,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 1196 [2024-10-10 23:52:22,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:22,369 INFO L225 Difference]: With dead ends: 57275 [2024-10-10 23:52:22,369 INFO L226 Difference]: Without dead ends: 28983 [2024-10-10 23:52:22,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1201 GetRequests, 1196 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:52:22,389 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 717 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:22,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 139 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:52:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28983 states. [2024-10-10 23:52:22,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28983 to 28983. [2024-10-10 23:52:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28983 states, 28982 states have (on average 1.0327099579049064) internal successors, (29930), 28982 states have internal predecessors, (29930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28983 states to 28983 states and 29930 transitions. [2024-10-10 23:52:22,610 INFO L78 Accepts]: Start accepts. Automaton has 28983 states and 29930 transitions. Word has length 1196 [2024-10-10 23:52:22,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:22,611 INFO L471 AbstractCegarLoop]: Abstraction has 28983 states and 29930 transitions. [2024-10-10 23:52:22,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:22,612 INFO L276 IsEmpty]: Start isEmpty. Operand 28983 states and 29930 transitions. [2024-10-10 23:52:22,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1279 [2024-10-10 23:52:22,626 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:22,627 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:22,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 23:52:22,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-10 23:52:22,828 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:22,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash -24183344, now seen corresponding path program 1 times [2024-10-10 23:52:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:22,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161770723] [2024-10-10 23:52:22,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:22,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1607 backedges. 1149 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2024-10-10 23:52:23,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:23,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161770723] [2024-10-10 23:52:23,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161770723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:23,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:23,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:23,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910324892] [2024-10-10 23:52:23,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:23,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:52:23,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:23,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:52:23,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:52:23,891 INFO L87 Difference]: Start difference. First operand 28983 states and 29930 transitions. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:25,624 INFO L93 Difference]: Finished difference Result 57275 states and 59168 transitions. [2024-10-10 23:52:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:52:25,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 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 1278 [2024-10-10 23:52:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:25,652 INFO L225 Difference]: With dead ends: 57275 [2024-10-10 23:52:25,652 INFO L226 Difference]: Without dead ends: 28983 [2024-10-10 23:52:25,672 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 [2024-10-10 23:52:25,673 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 934 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:25,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 275 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-10 23:52:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28983 states. [2024-10-10 23:52:25,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28983 to 28983. [2024-10-10 23:52:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28983 states, 28982 states have (on average 1.0326064453798909) internal successors, (29927), 28982 states have internal predecessors, (29927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28983 states to 28983 states and 29927 transitions. [2024-10-10 23:52:25,932 INFO L78 Accepts]: Start accepts. Automaton has 28983 states and 29927 transitions. Word has length 1278 [2024-10-10 23:52:25,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:25,932 INFO L471 AbstractCegarLoop]: Abstraction has 28983 states and 29927 transitions. [2024-10-10 23:52:25,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:25,933 INFO L276 IsEmpty]: Start isEmpty. Operand 28983 states and 29927 transitions. [2024-10-10 23:52:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1300 [2024-10-10 23:52:25,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:25,947 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:25,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-10 23:52:25,947 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:25,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1676263369, now seen corresponding path program 1 times [2024-10-10 23:52:25,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:25,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464236736] [2024-10-10 23:52:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:25,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 444 proven. 1062 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-10 23:52:27,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:27,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464236736] [2024-10-10 23:52:27,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464236736] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:52:27,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144933224] [2024-10-10 23:52:27,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:27,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:27,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:52:27,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:52:27,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 23:52:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:27,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:52:27,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:52:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-10-10 23:52:27,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:52:27,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144933224] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:27,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:52:27,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-10-10 23:52:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594748573] [2024-10-10 23:52:27,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:27,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:52:27,889 INFO L87 Difference]: Start difference. First operand 28983 states and 29927 transitions. Second operand has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:29,145 INFO L93 Difference]: Finished difference Result 57275 states and 59162 transitions. [2024-10-10 23:52:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:29,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 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 1299 [2024-10-10 23:52:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:29,173 INFO L225 Difference]: With dead ends: 57275 [2024-10-10 23:52:29,173 INFO L226 Difference]: Without dead ends: 26913 [2024-10-10 23:52:29,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 1299 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:52:29,190 INFO L432 NwaCegarLoop]: 800 mSDtfsCounter, 580 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:29,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 805 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-10 23:52:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26913 states. [2024-10-10 23:52:29,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26913 to 26913. [2024-10-10 23:52:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26913 states, 26912 states have (on average 1.0264565992865635) internal successors, (27624), 26912 states have internal predecessors, (27624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26913 states to 26913 states and 27624 transitions. [2024-10-10 23:52:29,365 INFO L78 Accepts]: Start accepts. Automaton has 26913 states and 27624 transitions. Word has length 1299 [2024-10-10 23:52:29,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:29,366 INFO L471 AbstractCegarLoop]: Abstraction has 26913 states and 27624 transitions. [2024-10-10 23:52:29,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:29,366 INFO L276 IsEmpty]: Start isEmpty. Operand 26913 states and 27624 transitions. [2024-10-10 23:52:29,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1320 [2024-10-10 23:52:29,379 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:29,379 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:29,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 23:52:29,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:29,580 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:29,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1373794624, now seen corresponding path program 1 times [2024-10-10 23:52:29,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:29,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603860201] [2024-10-10 23:52:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:29,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 1107 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2024-10-10 23:52:30,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:30,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603860201] [2024-10-10 23:52:30,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603860201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:30,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:30,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:30,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83829559] [2024-10-10 23:52:30,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:30,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:30,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:30,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:30,184 INFO L87 Difference]: Start difference. First operand 26913 states and 27624 transitions. Second operand has 3 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:31,522 INFO L93 Difference]: Finished difference Result 60725 states and 62493 transitions. [2024-10-10 23:52:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:31,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 0 states have call successors, (0), 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 1319 [2024-10-10 23:52:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:31,554 INFO L225 Difference]: With dead ends: 60725 [2024-10-10 23:52:31,554 INFO L226 Difference]: Without dead ends: 33813 [2024-10-10 23:52:31,573 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 [2024-10-10 23:52:31,574 INFO L432 NwaCegarLoop]: 957 mSDtfsCounter, 452 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:31,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 963 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:52:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33813 states. [2024-10-10 23:52:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33813 to 33813. [2024-10-10 23:52:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33813 states, 33812 states have (on average 1.0259375369691235) internal successors, (34689), 33812 states have internal predecessors, (34689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:31,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33813 states to 33813 states and 34689 transitions. [2024-10-10 23:52:31,883 INFO L78 Accepts]: Start accepts. Automaton has 33813 states and 34689 transitions. Word has length 1319 [2024-10-10 23:52:31,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:31,883 INFO L471 AbstractCegarLoop]: Abstraction has 33813 states and 34689 transitions. [2024-10-10 23:52:31,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 33813 states and 34689 transitions. [2024-10-10 23:52:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1372 [2024-10-10 23:52:31,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:31,898 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:31,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-10 23:52:31,899 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:31,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:31,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1202533806, now seen corresponding path program 1 times [2024-10-10 23:52:31,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:31,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748235359] [2024-10-10 23:52:31,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:31,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 1263 proven. 805 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-10-10 23:52:33,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:33,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748235359] [2024-10-10 23:52:33,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748235359] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:52:33,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994125546] [2024-10-10 23:52:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:33,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:33,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:52:33,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:52:33,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 23:52:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:33,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:52:33,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:52:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 1466 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2024-10-10 23:52:33,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:52:33,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994125546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:33,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:52:33,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-10-10 23:52:33,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256435788] [2024-10-10 23:52:33,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:33,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:33,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:52:33,788 INFO L87 Difference]: Start difference. First operand 33813 states and 34689 transitions. Second operand has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:35,259 INFO L93 Difference]: Finished difference Result 80045 states and 82368 transitions. [2024-10-10 23:52:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:35,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 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 1371 [2024-10-10 23:52:35,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:35,309 INFO L225 Difference]: With dead ends: 80045 [2024-10-10 23:52:35,309 INFO L226 Difference]: Without dead ends: 46923 [2024-10-10 23:52:35,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1371 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:52:35,336 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 644 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:35,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 127 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:52:35,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46923 states. [2024-10-10 23:52:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46923 to 46233. [2024-10-10 23:52:35,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46233 states, 46232 states have (on average 1.024788025609967) internal successors, (47378), 46232 states have internal predecessors, (47378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46233 states to 46233 states and 47378 transitions. [2024-10-10 23:52:35,883 INFO L78 Accepts]: Start accepts. Automaton has 46233 states and 47378 transitions. Word has length 1371 [2024-10-10 23:52:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:35,884 INFO L471 AbstractCegarLoop]: Abstraction has 46233 states and 47378 transitions. [2024-10-10 23:52:35,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 46233 states and 47378 transitions. [2024-10-10 23:52:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1428 [2024-10-10 23:52:35,916 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:35,917 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:35,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-10 23:52:36,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:36,118 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:36,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:36,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1795473504, now seen corresponding path program 1 times [2024-10-10 23:52:36,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:36,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117274524] [2024-10-10 23:52:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:36,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2519 backedges. 576 proven. 1316 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2024-10-10 23:52:37,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:37,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117274524] [2024-10-10 23:52:37,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117274524] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:52:37,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24128738] [2024-10-10 23:52:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:37,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:37,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:52:37,515 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:52:37,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 23:52:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:37,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:52:37,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:52:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2519 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 1957 trivial. 0 not checked. [2024-10-10 23:52:37,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:52:37,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24128738] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:37,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:52:37,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-10-10 23:52:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830286415] [2024-10-10 23:52:37,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:37,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:37,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:52:37,894 INFO L87 Difference]: Start difference. First operand 46233 states and 47378 transitions. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:39,265 INFO L93 Difference]: Finished difference Result 91085 states and 93362 transitions. [2024-10-10 23:52:39,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:39,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 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 1427 [2024-10-10 23:52:39,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:39,302 INFO L225 Difference]: With dead ends: 91085 [2024-10-10 23:52:39,303 INFO L226 Difference]: Without dead ends: 45543 [2024-10-10 23:52:39,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1433 GetRequests, 1427 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-10 23:52:39,322 INFO L432 NwaCegarLoop]: 881 mSDtfsCounter, 667 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:39,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 887 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-10 23:52:39,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45543 states. [2024-10-10 23:52:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45543 to 44163. [2024-10-10 23:52:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44163 states, 44162 states have (on average 1.0179566142837735) internal successors, (44955), 44162 states have internal predecessors, (44955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44163 states to 44163 states and 44955 transitions. [2024-10-10 23:52:39,650 INFO L78 Accepts]: Start accepts. Automaton has 44163 states and 44955 transitions. Word has length 1427 [2024-10-10 23:52:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:39,651 INFO L471 AbstractCegarLoop]: Abstraction has 44163 states and 44955 transitions. [2024-10-10 23:52:39,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 44163 states and 44955 transitions. [2024-10-10 23:52:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1453 [2024-10-10 23:52:39,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:39,670 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:39,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 23:52:39,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-10 23:52:39,871 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:39,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:39,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1162197130, now seen corresponding path program 1 times [2024-10-10 23:52:39,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:39,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860465552] [2024-10-10 23:52:39,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:39,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:40,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1884 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 1865 trivial. 0 not checked. [2024-10-10 23:52:40,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:40,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860465552] [2024-10-10 23:52:40,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860465552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:40,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:40,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826446191] [2024-10-10 23:52:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:40,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:40,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:40,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:40,473 INFO L87 Difference]: Start difference. First operand 44163 states and 44955 transitions. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:41,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:41,988 INFO L93 Difference]: Finished difference Result 100055 states and 102015 transitions. [2024-10-10 23:52:41,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:41,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 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 1452 [2024-10-10 23:52:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:42,040 INFO L225 Difference]: With dead ends: 100055 [2024-10-10 23:52:42,040 INFO L226 Difference]: Without dead ends: 55893 [2024-10-10 23:52:42,057 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 [2024-10-10 23:52:42,058 INFO L432 NwaCegarLoop]: 939 mSDtfsCounter, 689 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:42,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 945 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:52:42,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55893 states. [2024-10-10 23:52:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55893 to 55893. [2024-10-10 23:52:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55893 states, 55892 states have (on average 1.0173012237887353) internal successors, (56859), 55892 states have internal predecessors, (56859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55893 states to 55893 states and 56859 transitions. [2024-10-10 23:52:42,485 INFO L78 Accepts]: Start accepts. Automaton has 55893 states and 56859 transitions. Word has length 1452 [2024-10-10 23:52:42,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:42,486 INFO L471 AbstractCegarLoop]: Abstraction has 55893 states and 56859 transitions. [2024-10-10 23:52:42,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:42,486 INFO L276 IsEmpty]: Start isEmpty. Operand 55893 states and 56859 transitions. [2024-10-10 23:52:42,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1480 [2024-10-10 23:52:42,505 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:42,505 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:42,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-10 23:52:42,506 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:42,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash -592596071, now seen corresponding path program 1 times [2024-10-10 23:52:42,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:42,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778233129] [2024-10-10 23:52:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:42,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2024-10-10 23:52:43,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:43,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778233129] [2024-10-10 23:52:43,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778233129] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:43,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:43,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:43,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944460613] [2024-10-10 23:52:43,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:43,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:43,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:43,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:43,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:43,022 INFO L87 Difference]: Start difference. First operand 55893 states and 56859 transitions. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:44,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:44,627 INFO L93 Difference]: Finished difference Result 111785 states and 113724 transitions. [2024-10-10 23:52:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:44,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 1479 [2024-10-10 23:52:44,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:44,682 INFO L225 Difference]: With dead ends: 111785 [2024-10-10 23:52:44,682 INFO L226 Difference]: Without dead ends: 56583 [2024-10-10 23:52:44,706 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 [2024-10-10 23:52:44,706 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 618 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:44,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 64 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-10 23:52:44,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56583 states. [2024-10-10 23:52:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56583 to 55893. [2024-10-10 23:52:45,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55893 states, 55892 states have (on average 1.0168718242324484) internal successors, (56835), 55892 states have internal predecessors, (56835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55893 states to 55893 states and 56835 transitions. [2024-10-10 23:52:45,318 INFO L78 Accepts]: Start accepts. Automaton has 55893 states and 56835 transitions. Word has length 1479 [2024-10-10 23:52:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:45,319 INFO L471 AbstractCegarLoop]: Abstraction has 55893 states and 56835 transitions. [2024-10-10 23:52:45,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 55893 states and 56835 transitions. [2024-10-10 23:52:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1538 [2024-10-10 23:52:45,358 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:45,359 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:52:45,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-10 23:52:45,359 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:45,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:45,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1670448002, now seen corresponding path program 1 times [2024-10-10 23:52:45,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:45,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963025273] [2024-10-10 23:52:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:45,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2161 trivial. 0 not checked. [2024-10-10 23:52:46,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:46,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963025273] [2024-10-10 23:52:46,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963025273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:46,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:46,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:46,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002985391] [2024-10-10 23:52:46,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:46,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:46,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:46,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:46,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:46,466 INFO L87 Difference]: Start difference. First operand 55893 states and 56835 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:47,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:47,862 INFO L93 Difference]: Finished difference Result 112475 states and 114367 transitions. [2024-10-10 23:52:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:47,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 1537 [2024-10-10 23:52:47,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:47,919 INFO L225 Difference]: With dead ends: 112475 [2024-10-10 23:52:47,920 INFO L226 Difference]: Without dead ends: 56583 [2024-10-10 23:52:47,951 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 [2024-10-10 23:52:47,952 INFO L432 NwaCegarLoop]: 933 mSDtfsCounter, 691 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:47,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 939 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:52:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56583 states. [2024-10-10 23:52:48,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56583 to 55203. [2024-10-10 23:52:48,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55203 states, 55202 states have (on average 1.0137313865439659) internal successors, (55960), 55202 states have internal predecessors, (55960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55203 states to 55203 states and 55960 transitions. [2024-10-10 23:52:48,434 INFO L78 Accepts]: Start accepts. Automaton has 55203 states and 55960 transitions. Word has length 1537 [2024-10-10 23:52:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:48,435 INFO L471 AbstractCegarLoop]: Abstraction has 55203 states and 55960 transitions. [2024-10-10 23:52:48,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 55203 states and 55960 transitions. [2024-10-10 23:52:48,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1620 [2024-10-10 23:52:48,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:48,464 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:48,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-10 23:52:48,464 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:48,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:48,464 INFO L85 PathProgramCache]: Analyzing trace with hash -532342071, now seen corresponding path program 1 times [2024-10-10 23:52:48,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:48,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924563945] [2024-10-10 23:52:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:48,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2488 backedges. 1769 proven. 0 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2024-10-10 23:52:49,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:49,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924563945] [2024-10-10 23:52:49,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924563945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:49,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:49,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:49,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625975211] [2024-10-10 23:52:49,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:49,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:49,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:49,616 INFO L87 Difference]: Start difference. First operand 55203 states and 55960 transitions. Second operand has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:51,221 INFO L93 Difference]: Finished difference Result 135935 states and 137909 transitions. [2024-10-10 23:52:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:51,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 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 1619 [2024-10-10 23:52:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:51,289 INFO L225 Difference]: With dead ends: 135935 [2024-10-10 23:52:51,289 INFO L226 Difference]: Without dead ends: 81423 [2024-10-10 23:52:51,308 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 [2024-10-10 23:52:51,309 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 614 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:51,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 228 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:52:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81423 states. [2024-10-10 23:52:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81423 to 80043. [2024-10-10 23:52:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80043 states, 80042 states have (on average 1.0128807376127533) internal successors, (81073), 80042 states have internal predecessors, (81073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:52,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80043 states to 80043 states and 81073 transitions. [2024-10-10 23:52:52,030 INFO L78 Accepts]: Start accepts. Automaton has 80043 states and 81073 transitions. Word has length 1619 [2024-10-10 23:52:52,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:52,031 INFO L471 AbstractCegarLoop]: Abstraction has 80043 states and 81073 transitions. [2024-10-10 23:52:52,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:52,031 INFO L276 IsEmpty]: Start isEmpty. Operand 80043 states and 81073 transitions. [2024-10-10 23:52:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1780 [2024-10-10 23:52:52,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:52,062 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:52:52,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-10 23:52:52,063 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:52,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:52,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2003121410, now seen corresponding path program 1 times [2024-10-10 23:52:52,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:52,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251724369] [2024-10-10 23:52:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:52,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 2466 proven. 291 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2024-10-10 23:52:54,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251724369] [2024-10-10 23:52:54,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251724369] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:52:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978129824] [2024-10-10 23:52:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:54,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:54,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:52:54,678 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:52:54,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 23:52:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:55,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:52:55,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:52:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 3307 trivial. 0 not checked. [2024-10-10 23:52:55,158 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:52:55,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978129824] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:55,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:52:55,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-10 23:52:55,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429795498] [2024-10-10 23:52:55,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:55,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:55,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:55,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:52:55,161 INFO L87 Difference]: Start difference. First operand 80043 states and 81073 transitions. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:56,710 INFO L93 Difference]: Finished difference Result 177335 states and 179695 transitions. [2024-10-10 23:52:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:56,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 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 1779 [2024-10-10 23:52:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:56,806 INFO L225 Difference]: With dead ends: 177335 [2024-10-10 23:52:56,806 INFO L226 Difference]: Without dead ends: 97293 [2024-10-10 23:52:56,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1783 GetRequests, 1779 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 23:52:56,860 INFO L432 NwaCegarLoop]: 951 mSDtfsCounter, 695 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:56,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 957 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:52:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97293 states. [2024-10-10 23:52:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97293 to 95913. [2024-10-10 23:52:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95913 states, 95912 states have (on average 1.0117399282675785) internal successors, (97038), 95912 states have internal predecessors, (97038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95913 states to 95913 states and 97038 transitions. [2024-10-10 23:52:58,004 INFO L78 Accepts]: Start accepts. Automaton has 95913 states and 97038 transitions. Word has length 1779 [2024-10-10 23:52:58,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:58,005 INFO L471 AbstractCegarLoop]: Abstraction has 95913 states and 97038 transitions. [2024-10-10 23:52:58,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:52:58,006 INFO L276 IsEmpty]: Start isEmpty. Operand 95913 states and 97038 transitions. [2024-10-10 23:52:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1980 [2024-10-10 23:52:58,052 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:58,053 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:52:58,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 23:52:58,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:58,254 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:58,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1454511848, now seen corresponding path program 1 times [2024-10-10 23:52:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:58,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560981552] [2024-10-10 23:52:58,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:58,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4397 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 4364 trivial. 0 not checked. [2024-10-10 23:52:59,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:59,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560981552] [2024-10-10 23:52:59,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560981552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:59,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:59,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:59,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208315139] [2024-10-10 23:52:59,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:59,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:59,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:59,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:59,112 INFO L87 Difference]: Start difference. First operand 95913 states and 97038 transitions. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:53:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:53:00,841 INFO L93 Difference]: Finished difference Result 203555 states and 205974 transitions. [2024-10-10 23:53:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:53:00,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 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 1979 [2024-10-10 23:53:00,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:53:00,975 INFO L225 Difference]: With dead ends: 203555 [2024-10-10 23:53:00,976 INFO L226 Difference]: Without dead ends: 107643 [2024-10-10 23:53:01,038 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 [2024-10-10 23:53:01,038 INFO L432 NwaCegarLoop]: 798 mSDtfsCounter, 726 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:53:01,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 804 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-10 23:53:01,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107643 states. [2024-10-10 23:53:02,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107643 to 102813. [2024-10-10 23:53:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102813 states, 102812 states have (on average 1.0105824222853363) internal successors, (103900), 102812 states have internal predecessors, (103900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:53:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102813 states to 102813 states and 103900 transitions. [2024-10-10 23:53:02,318 INFO L78 Accepts]: Start accepts. Automaton has 102813 states and 103900 transitions. Word has length 1979 [2024-10-10 23:53:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:53:02,319 INFO L471 AbstractCegarLoop]: Abstraction has 102813 states and 103900 transitions. [2024-10-10 23:53:02,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:53:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 102813 states and 103900 transitions. [2024-10-10 23:53:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2112 [2024-10-10 23:53:02,378 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:53:02,379 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:53:02,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-10 23:53:02,379 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:53:02,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:53:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1806964623, now seen corresponding path program 1 times [2024-10-10 23:53:02,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:53:02,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998230189] [2024-10-10 23:53:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:53:02,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:53:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:53:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3235 backedges. 2553 proven. 107 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2024-10-10 23:53:04,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:53:04,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998230189] [2024-10-10 23:53:04,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998230189] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:53:04,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355298414] [2024-10-10 23:53:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:53:04,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:53:04,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:53:04,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:53:04,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 23:53:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:53:05,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 2341 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 23:53:05,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:53:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3235 backedges. 2446 proven. 214 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2024-10-10 23:53:06,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 23:53:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3235 backedges. 2660 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2024-10-10 23:53:07,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355298414] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-10 23:53:07,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-10 23:53:07,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2024-10-10 23:53:07,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820531255] [2024-10-10 23:53:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:53:07,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 23:53:07,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:53:07,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 23:53:07,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:53:07,666 INFO L87 Difference]: Start difference. First operand 102813 states and 103900 transitions. Second operand has 5 states, 5 states have (on average 335.2) internal successors, (1676), 5 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:53:09,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:53:09,525 INFO L93 Difference]: Finished difference Result 207695 states and 209899 transitions. [2024-10-10 23:53:09,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:53:09,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 335.2) internal successors, (1676), 5 states have internal predecessors, (1676), 0 states have call successors, (0), 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 2111 [2024-10-10 23:53:09,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:53:09,632 INFO L225 Difference]: With dead ends: 207695 [2024-10-10 23:53:09,633 INFO L226 Difference]: Without dead ends: 105573 [2024-10-10 23:53:09,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4225 GetRequests, 4216 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2024-10-10 23:53:09,657 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 411 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:53:09,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 11 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-10 23:53:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105573 states. [2024-10-10 23:53:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105573 to 99363. [2024-10-10 23:53:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99363 states, 99362 states have (on average 1.0104667780439203) internal successors, (100402), 99362 states have internal predecessors, (100402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:53:10,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99363 states to 99363 states and 100402 transitions. [2024-10-10 23:53:10,711 INFO L78 Accepts]: Start accepts. Automaton has 99363 states and 100402 transitions. Word has length 2111 [2024-10-10 23:53:10,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:53:10,712 INFO L471 AbstractCegarLoop]: Abstraction has 99363 states and 100402 transitions. [2024-10-10 23:53:10,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 335.2) internal successors, (1676), 5 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:53:10,713 INFO L276 IsEmpty]: Start isEmpty. Operand 99363 states and 100402 transitions. [2024-10-10 23:53:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2145 [2024-10-10 23:53:10,773 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:53:10,773 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:53:10,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 23:53:10,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-10 23:53:10,974 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:53:10,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:53:10,975 INFO L85 PathProgramCache]: Analyzing trace with hash 552895202, now seen corresponding path program 1 times [2024-10-10 23:53:10,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:53:10,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897701436] [2024-10-10 23:53:10,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:53:10,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:53:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:53:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3334 backedges. 2366 proven. 581 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2024-10-10 23:53:14,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:53:14,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897701436] [2024-10-10 23:53:14,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897701436] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:53:14,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783954306] [2024-10-10 23:53:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:53:14,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:53:14,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:53:14,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 23:53:14,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 23:53:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:53:14,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 23:53:14,624 INFO L278 TraceCheckSpWp]: Computing forward predicates...