./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_label17.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_label17.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 926b7b9d6547e72bfa5d12c411fdf31134212d85b2e49cebf30ae587ba070010 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 23:51:39,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 23:51:39,577 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 23:51:39,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 23:51:39,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 23:51:39,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 23:51:39,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 23:51:39,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 23:51:39,619 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 23:51:39,620 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 23:51:39,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 23:51:39,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 23:51:39,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 23:51:39,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 23:51:39,622 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 23:51:39,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 23:51:39,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 23:51:39,623 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 23:51:39,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 23:51:39,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 23:51:39,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 23:51:39,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 23:51:39,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 23:51:39,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 23:51:39,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 23:51:39,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 23:51:39,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 23:51:39,629 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 23:51:39,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 23:51:39,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 23:51:39,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 23:51:39,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 23:51:39,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:51:39,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 23:51:39,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 23:51:39,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 23:51:39,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 23:51:39,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 23:51:39,636 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 23:51:39,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 23:51:39,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 23:51:39,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 23:51:39,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 926b7b9d6547e72bfa5d12c411fdf31134212d85b2e49cebf30ae587ba070010 [2024-10-10 23:51:39,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 23:51:39,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 23:51:39,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 23:51:39,898 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 23:51:39,898 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 23:51:39,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label17.c [2024-10-10 23:51:41,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 23:51:41,805 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 23:51:41,807 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label17.c [2024-10-10 23:51:41,835 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/563dfcb93/b14f2e2e19da4da89fc9166b86e693f2/FLAG6423d7f79 [2024-10-10 23:51:41,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/563dfcb93/b14f2e2e19da4da89fc9166b86e693f2 [2024-10-10 23:51:41,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 23:51:41,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 23:51:41,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 23:51:41,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 23:51:41,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 23:51:41,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:51:41" (1/1) ... [2024-10-10 23:51:41,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f51309f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:41, skipping insertion in model container [2024-10-10 23:51:41,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:51:41" (1/1) ... [2024-10-10 23:51:42,086 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 23:51:42,380 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_label17.c[3487,3500] [2024-10-10 23:51:43,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:51:43,034 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 23:51:43,055 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_label17.c[3487,3500] [2024-10-10 23:51:43,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 23:51:43,429 INFO L204 MainTranslator]: Completed translation [2024-10-10 23:51:43,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43 WrapperNode [2024-10-10 23:51:43,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 23:51:43,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 23:51:43,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 23:51:43,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 23:51:43,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:43,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:43,806 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4135 [2024-10-10 23:51:43,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 23:51:43,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 23:51:43,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 23:51:43,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 23:51:43,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:43,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:43,901 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:43,963 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 23:51:43,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:43,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:44,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:44,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:44,137 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:44,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:44,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 23:51:44,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 23:51:44,195 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 23:51:44,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 23:51:44,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (1/1) ... [2024-10-10 23:51:44,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 23:51:44,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:51:44,234 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 23:51:44,237 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 23:51:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 23:51:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 23:51:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 23:51:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 23:51:44,355 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 23:51:44,357 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 23:51:47,963 INFO L? ?]: Removed 639 outVars from TransFormulas that were not future-live. [2024-10-10 23:51:47,963 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 23:51:48,013 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 23:51:48,014 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 23:51:48,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:51:48 BoogieIcfgContainer [2024-10-10 23:51:48,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 23:51:48,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 23:51:48,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 23:51:48,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 23:51:48,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:51:41" (1/3) ... [2024-10-10 23:51:48,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d91fd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:51:48, skipping insertion in model container [2024-10-10 23:51:48,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:51:43" (2/3) ... [2024-10-10 23:51:48,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d91fd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:51:48, skipping insertion in model container [2024-10-10 23:51:48,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:51:48" (3/3) ... [2024-10-10 23:51:48,030 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label17.c [2024-10-10 23:51:48,046 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 23:51:48,046 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 23:51:48,133 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 23:51:48,142 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;@3e364566, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 23:51:48,143 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 23:51:48,150 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 23:51:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-10 23:51:48,156 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:51:48,157 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:51:48,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:51:48,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:51:48,164 INFO L85 PathProgramCache]: Analyzing trace with hash -176424123, now seen corresponding path program 1 times [2024-10-10 23:51:48,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:51:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248278095] [2024-10-10 23:51:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:51:48,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:51:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:51:48,333 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 23:51:48,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:51:48,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248278095] [2024-10-10 23:51:48,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248278095] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:51:48,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:51:48,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:51:48,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29619289] [2024-10-10 23:51:48,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:51:48,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 23:51:48,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:51:48,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 23:51:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:51:48,368 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 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 23:51:48,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:51:48,451 INFO L93 Difference]: Finished difference Result 1389 states and 2763 transitions. [2024-10-10 23:51:48,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 23:51:48,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-10 23:51:48,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:51:48,478 INFO L225 Difference]: With dead ends: 1389 [2024-10-10 23:51:48,479 INFO L226 Difference]: Without dead ends: 693 [2024-10-10 23:51:48,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 23:51:48,491 INFO L432 NwaCegarLoop]: 1317 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 23:51:48,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1317 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 23:51:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-10-10 23:51:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2024-10-10 23:51:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.903179190751445) internal successors, (1317), 692 states have internal predecessors, (1317), 0 states have call successors, (0), 0 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 23:51:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2024-10-10 23:51:48,571 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 30 [2024-10-10 23:51:48,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:51:48,572 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2024-10-10 23:51:48,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 23:51:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2024-10-10 23:51:48,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-10 23:51:48,573 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:51:48,574 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 23:51:48,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 23:51:48,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:51:48,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:51:48,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1196411433, now seen corresponding path program 1 times [2024-10-10 23:51:48,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:51:48,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116524085] [2024-10-10 23:51:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:51:48,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:51:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:51:48,759 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 23:51:48,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:51:48,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116524085] [2024-10-10 23:51:48,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116524085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:51:48,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:51:48,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:51:48,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221577999] [2024-10-10 23:51:48,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:51:48,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:51:48,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:51:48,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:51:48,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:51:48,764 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 23:51:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:51:51,773 INFO L93 Difference]: Finished difference Result 2075 states and 3948 transitions. [2024-10-10 23:51:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:51:51,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-10 23:51:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:51:51,781 INFO L225 Difference]: With dead ends: 2075 [2024-10-10 23:51:51,781 INFO L226 Difference]: Without dead ends: 1383 [2024-10-10 23:51:51,783 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 23:51:51,784 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 745 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:51:51,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 435 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-10 23:51:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2024-10-10 23:51:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2024-10-10 23:51:51,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.5998552821997105) internal successors, (2211), 1382 states have internal predecessors, (2211), 0 states have call successors, (0), 0 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 23:51:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2211 transitions. [2024-10-10 23:51:51,849 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2211 transitions. Word has length 30 [2024-10-10 23:51:51,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:51:51,850 INFO L471 AbstractCegarLoop]: Abstraction has 1383 states and 2211 transitions. [2024-10-10 23:51:51,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 23:51:51,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2211 transitions. [2024-10-10 23:51:51,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-10 23:51:51,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:51:51,854 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:51:51,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 23:51:51,854 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:51:51,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:51:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash -847384100, now seen corresponding path program 1 times [2024-10-10 23:51:51,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:51:51,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117649240] [2024-10-10 23:51:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:51:51,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:51:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:51:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:51:52,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:51:52,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117649240] [2024-10-10 23:51:52,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117649240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:51:52,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:51:52,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:51:52,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066566190] [2024-10-10 23:51:52,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:51:52,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:51:52,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:51:52,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:51:52,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:51:52,099 INFO L87 Difference]: Start difference. First operand 1383 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:51:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:51:54,797 INFO L93 Difference]: Finished difference Result 4145 states and 6630 transitions. [2024-10-10 23:51:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:51:54,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-10 23:51:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:51:54,809 INFO L225 Difference]: With dead ends: 4145 [2024-10-10 23:51:54,809 INFO L226 Difference]: Without dead ends: 2763 [2024-10-10 23:51:54,812 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 23:51:54,813 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 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, 2.6s IncrementalHoareTripleChecker+Time [2024-10-10 23:51:54,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 527 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-10 23:51:54,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2024-10-10 23:51:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2024-10-10 23:51:54,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.3504706734250542) internal successors, (3730), 2762 states have internal predecessors, (3730), 0 states have call successors, (0), 0 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 23:51:54,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3730 transitions. [2024-10-10 23:51:54,869 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3730 transitions. Word has length 95 [2024-10-10 23:51:54,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:51:54,869 INFO L471 AbstractCegarLoop]: Abstraction has 2763 states and 3730 transitions. [2024-10-10 23:51:54,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 23:51:54,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3730 transitions. [2024-10-10 23:51:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-10-10 23:51:54,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:51:54,881 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:51:54,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 23:51:54,882 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:51:54,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:51:54,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1533135068, now seen corresponding path program 1 times [2024-10-10 23:51:54,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:51:54,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734574515] [2024-10-10 23:51:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:51:54,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:51:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:51:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-10 23:51:55,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:51:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734574515] [2024-10-10 23:51:55,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734574515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:51:55,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:51:55,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:51:55,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916486964] [2024-10-10 23:51:55,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:51:55,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:51:55,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:51:55,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:51:55,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:51:55,528 INFO L87 Difference]: Start difference. First operand 2763 states and 3730 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 23:51:58,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:51:58,852 INFO L93 Difference]: Finished difference Result 6905 states and 9073 transitions. [2024-10-10 23:51:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:51:58,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 213 [2024-10-10 23:51:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:51:58,870 INFO L225 Difference]: With dead ends: 6905 [2024-10-10 23:51:58,870 INFO L226 Difference]: Without dead ends: 4143 [2024-10-10 23:51:58,878 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 23:51:58,879 INFO L432 NwaCegarLoop]: 621 mSDtfsCounter, 1873 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4085 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 4275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:51:58,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 638 Invalid, 4275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 4085 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-10 23:51:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2024-10-10 23:51:58,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2024-10-10 23:51:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4142 states have (on average 1.2467407049734427) internal successors, (5164), 4142 states have internal predecessors, (5164), 0 states have call successors, (0), 0 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 23:51:58,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5164 transitions. [2024-10-10 23:51:58,954 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5164 transitions. Word has length 213 [2024-10-10 23:51:58,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:51:58,955 INFO L471 AbstractCegarLoop]: Abstraction has 4143 states and 5164 transitions. [2024-10-10 23:51:58,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 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 23:51:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5164 transitions. [2024-10-10 23:51:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-10-10 23:51:58,962 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:51:58,962 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:51:58,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 23:51:58,963 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:51:58,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:51:58,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1208235354, now seen corresponding path program 1 times [2024-10-10 23:51:58,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:51:58,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67283413] [2024-10-10 23:51:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:51:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:51:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:51:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:51:59,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:51:59,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67283413] [2024-10-10 23:51:59,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67283413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:51:59,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:51:59,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:51:59,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154090352] [2024-10-10 23:51:59,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:51:59,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:51:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:51:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:51:59,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:51:59,268 INFO L87 Difference]: Start difference. First operand 4143 states and 5164 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 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 23:52:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:01,685 INFO L93 Difference]: Finished difference Result 12425 states and 15489 transitions. [2024-10-10 23:52:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:01,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 329 [2024-10-10 23:52:01,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:01,714 INFO L225 Difference]: With dead ends: 12425 [2024-10-10 23:52:01,715 INFO L226 Difference]: Without dead ends: 8283 [2024-10-10 23:52:01,721 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 23:52:01,722 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 691 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 991 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:01,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 146 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [991 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-10 23:52:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8283 states. [2024-10-10 23:52:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8283 to 7593. [2024-10-10 23:52:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7593 states, 7592 states have (on average 1.2413066385669125) internal successors, (9424), 7592 states have internal predecessors, (9424), 0 states have call successors, (0), 0 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 23:52:01,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 9424 transitions. [2024-10-10 23:52:01,855 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 9424 transitions. Word has length 329 [2024-10-10 23:52:01,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:01,856 INFO L471 AbstractCegarLoop]: Abstraction has 7593 states and 9424 transitions. [2024-10-10 23:52:01,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 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 23:52:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 9424 transitions. [2024-10-10 23:52:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-10-10 23:52:01,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:01,864 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:52:01,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 23:52:01,865 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:01,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:01,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1065521759, now seen corresponding path program 1 times [2024-10-10 23:52:01,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:01,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387749763] [2024-10-10 23:52:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:01,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-10 23:52:02,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:02,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387749763] [2024-10-10 23:52:02,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387749763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:02,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:02,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 23:52:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164169655] [2024-10-10 23:52:02,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:02,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:02,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:02,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:02,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:02,279 INFO L87 Difference]: Start difference. First operand 7593 states and 9424 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 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 23:52:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:04,592 INFO L93 Difference]: Finished difference Result 20015 states and 25395 transitions. [2024-10-10 23:52:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:04,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 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 414 [2024-10-10 23:52:04,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:04,632 INFO L225 Difference]: With dead ends: 20015 [2024-10-10 23:52:04,633 INFO L226 Difference]: Without dead ends: 12423 [2024-10-10 23:52:04,644 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 23:52:04,645 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 397 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:04,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 596 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-10 23:52:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12423 states. [2024-10-10 23:52:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12423 to 12423. [2024-10-10 23:52:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12423 states, 12422 states have (on average 1.1904685235871841) internal successors, (14788), 12422 states have internal predecessors, (14788), 0 states have call successors, (0), 0 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 23:52:04,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12423 states to 12423 states and 14788 transitions. [2024-10-10 23:52:04,842 INFO L78 Accepts]: Start accepts. Automaton has 12423 states and 14788 transitions. Word has length 414 [2024-10-10 23:52:04,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:04,843 INFO L471 AbstractCegarLoop]: Abstraction has 12423 states and 14788 transitions. [2024-10-10 23:52:04,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 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 23:52:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand 12423 states and 14788 transitions. [2024-10-10 23:52:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-10-10 23:52:04,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:04,850 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:52:04,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 23:52:04,851 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:04,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:04,851 INFO L85 PathProgramCache]: Analyzing trace with hash -792816946, now seen corresponding path program 1 times [2024-10-10 23:52:04,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:04,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056179653] [2024-10-10 23:52:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:04,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-10 23:52:05,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:05,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056179653] [2024-10-10 23:52:05,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056179653] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:05,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:05,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:05,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358714592] [2024-10-10 23:52:05,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:05,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:05,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:05,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:05,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:05,284 INFO L87 Difference]: Start difference. First operand 12423 states and 14788 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 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 23:52:07,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:07,938 INFO L93 Difference]: Finished difference Result 28985 states and 34911 transitions. [2024-10-10 23:52:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:07,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 415 [2024-10-10 23:52:07,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:07,972 INFO L225 Difference]: With dead ends: 28985 [2024-10-10 23:52:07,973 INFO L226 Difference]: Without dead ends: 16563 [2024-10-10 23:52:07,987 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 23:52:07,990 INFO L432 NwaCegarLoop]: 1297 mSDtfsCounter, 662 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:07,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1303 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-10 23:52:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16563 states. [2024-10-10 23:52:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16563 to 16563. [2024-10-10 23:52:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16563 states, 16562 states have (on average 1.1747373505615264) internal successors, (19456), 16562 states have internal predecessors, (19456), 0 states have call successors, (0), 0 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 23:52:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16563 states to 16563 states and 19456 transitions. [2024-10-10 23:52:08,336 INFO L78 Accepts]: Start accepts. Automaton has 16563 states and 19456 transitions. Word has length 415 [2024-10-10 23:52:08,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:08,337 INFO L471 AbstractCegarLoop]: Abstraction has 16563 states and 19456 transitions. [2024-10-10 23:52:08,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 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 23:52:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand 16563 states and 19456 transitions. [2024-10-10 23:52:08,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-10-10 23:52:08,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:08,346 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:52:08,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-10 23:52:08,347 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:08,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:08,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1449642762, now seen corresponding path program 1 times [2024-10-10 23:52:08,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:08,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523214264] [2024-10-10 23:52:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:08,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:52:09,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:09,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523214264] [2024-10-10 23:52:09,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523214264] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:09,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:09,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:09,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569472032] [2024-10-10 23:52:09,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:09,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:09,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:09,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:09,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:09,055 INFO L87 Difference]: Start difference. First operand 16563 states and 19456 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 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 23:52:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:11,371 INFO L93 Difference]: Finished difference Result 38645 states and 45451 transitions. [2024-10-10 23:52:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:11,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 436 [2024-10-10 23:52:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:11,414 INFO L225 Difference]: With dead ends: 38645 [2024-10-10 23:52:11,414 INFO L226 Difference]: Without dead ends: 22083 [2024-10-10 23:52:11,434 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 23:52:11,435 INFO L432 NwaCegarLoop]: 1068 mSDtfsCounter, 586 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:11,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1074 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-10 23:52:11,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22083 states. [2024-10-10 23:52:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22083 to 21393. [2024-10-10 23:52:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21393 states, 21392 states have (on average 1.1574420344053853) internal successors, (24760), 21392 states have internal predecessors, (24760), 0 states have call successors, (0), 0 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 23:52:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21393 states to 21393 states and 24760 transitions. [2024-10-10 23:52:11,721 INFO L78 Accepts]: Start accepts. Automaton has 21393 states and 24760 transitions. Word has length 436 [2024-10-10 23:52:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:11,722 INFO L471 AbstractCegarLoop]: Abstraction has 21393 states and 24760 transitions. [2024-10-10 23:52:11,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 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 23:52:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 21393 states and 24760 transitions. [2024-10-10 23:52:11,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-10-10 23:52:11,729 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:11,730 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:52:11,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-10 23:52:11,730 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:11,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:11,731 INFO L85 PathProgramCache]: Analyzing trace with hash -991000871, now seen corresponding path program 1 times [2024-10-10 23:52:11,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:11,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527796970] [2024-10-10 23:52:11,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:11,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 23:52:12,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:12,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527796970] [2024-10-10 23:52:12,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527796970] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:12,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:12,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:12,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25520197] [2024-10-10 23:52:12,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:12,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:12,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:12,329 INFO L87 Difference]: Start difference. First operand 21393 states and 24760 transitions. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 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 23:52:14,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:14,549 INFO L93 Difference]: Finished difference Result 47615 states and 55321 transitions. [2024-10-10 23:52:14,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:14,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 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 443 [2024-10-10 23:52:14,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:14,598 INFO L225 Difference]: With dead ends: 47615 [2024-10-10 23:52:14,598 INFO L226 Difference]: Without dead ends: 26223 [2024-10-10 23:52:14,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:14,627 INFO L432 NwaCegarLoop]: 628 mSDtfsCounter, 583 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:14,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 634 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 2454 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-10 23:52:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26223 states. [2024-10-10 23:52:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26223 to 26223. [2024-10-10 23:52:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26223 states, 26222 states have (on average 1.1478910838227443) internal successors, (30100), 26222 states have internal predecessors, (30100), 0 states have call successors, (0), 0 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 23:52:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26223 states to 26223 states and 30100 transitions. [2024-10-10 23:52:15,005 INFO L78 Accepts]: Start accepts. Automaton has 26223 states and 30100 transitions. Word has length 443 [2024-10-10 23:52:15,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:15,007 INFO L471 AbstractCegarLoop]: Abstraction has 26223 states and 30100 transitions. [2024-10-10 23:52:15,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 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 23:52:15,007 INFO L276 IsEmpty]: Start isEmpty. Operand 26223 states and 30100 transitions. [2024-10-10 23:52:15,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-10-10 23:52:15,015 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:15,016 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:52:15,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 23:52:15,016 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:15,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:15,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1073610902, now seen corresponding path program 1 times [2024-10-10 23:52:15,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:15,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357025105] [2024-10-10 23:52:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:15,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-10-10 23:52:15,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357025105] [2024-10-10 23:52:15,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357025105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:15,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:15,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:15,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612024881] [2024-10-10 23:52:15,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:15,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 23:52:15,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:15,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 23:52:15,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 23:52:15,423 INFO L87 Difference]: Start difference. First operand 26223 states and 30100 transitions. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 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 23:52:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:17,599 INFO L93 Difference]: Finished difference Result 53878 states and 61680 transitions. [2024-10-10 23:52:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 23:52:17,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 469 [2024-10-10 23:52:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:17,631 INFO L225 Difference]: With dead ends: 53878 [2024-10-10 23:52:17,631 INFO L226 Difference]: Without dead ends: 28293 [2024-10-10 23:52:17,649 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 23:52:17,650 INFO L432 NwaCegarLoop]: 622 mSDtfsCounter, 529 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:17,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 633 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-10 23:52:17,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28293 states. [2024-10-10 23:52:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28293 to 28293. [2024-10-10 23:52:17,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28293 states, 28292 states have (on average 1.1045878693623639) internal successors, (31251), 28292 states have internal predecessors, (31251), 0 states have call successors, (0), 0 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 23:52:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28293 states to 28293 states and 31251 transitions. [2024-10-10 23:52:17,987 INFO L78 Accepts]: Start accepts. Automaton has 28293 states and 31251 transitions. Word has length 469 [2024-10-10 23:52:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:17,989 INFO L471 AbstractCegarLoop]: Abstraction has 28293 states and 31251 transitions. [2024-10-10 23:52:17,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 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 23:52:17,990 INFO L276 IsEmpty]: Start isEmpty. Operand 28293 states and 31251 transitions. [2024-10-10 23:52:17,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2024-10-10 23:52:18,000 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:18,002 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:52:18,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 23:52:18,003 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:18,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:18,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1274581547, now seen corresponding path program 1 times [2024-10-10 23:52:18,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:18,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174966181] [2024-10-10 23:52:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:18,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2024-10-10 23:52:19,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:19,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174966181] [2024-10-10 23:52:19,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174966181] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:19,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:19,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:19,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40229804] [2024-10-10 23:52:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:19,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:19,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:19,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:19,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:19,113 INFO L87 Difference]: Start difference. First operand 28293 states and 31251 transitions. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 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 23:52:21,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:21,110 INFO L93 Difference]: Finished difference Result 63485 states and 70818 transitions. [2024-10-10 23:52:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:21,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 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 1037 [2024-10-10 23:52:21,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:21,150 INFO L225 Difference]: With dead ends: 63485 [2024-10-10 23:52:21,150 INFO L226 Difference]: Without dead ends: 36573 [2024-10-10 23:52:21,173 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 23:52:21,174 INFO L432 NwaCegarLoop]: 1126 mSDtfsCounter, 584 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 2327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:21,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1132 Invalid, 2327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-10 23:52:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36573 states. [2024-10-10 23:52:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36573 to 36573. [2024-10-10 23:52:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36573 states, 36572 states have (on average 1.0901235918188779) internal successors, (39868), 36572 states have internal predecessors, (39868), 0 states have call successors, (0), 0 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 23:52:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36573 states to 36573 states and 39868 transitions. [2024-10-10 23:52:21,625 INFO L78 Accepts]: Start accepts. Automaton has 36573 states and 39868 transitions. Word has length 1037 [2024-10-10 23:52:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:21,626 INFO L471 AbstractCegarLoop]: Abstraction has 36573 states and 39868 transitions. [2024-10-10 23:52:21,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 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 23:52:21,627 INFO L276 IsEmpty]: Start isEmpty. Operand 36573 states and 39868 transitions. [2024-10-10 23:52:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2024-10-10 23:52:21,636 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:21,637 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 23:52:21,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-10 23:52:21,637 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:21,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:21,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1472732642, now seen corresponding path program 1 times [2024-10-10 23:52:21,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:21,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349167158] [2024-10-10 23:52:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:21,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 505 proven. 330 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-10 23:52:23,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349167158] [2024-10-10 23:52:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349167158] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:52:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535201935] [2024-10-10 23:52:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:23,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:23,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:52:23,911 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 23:52:23,913 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 23:52:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:24,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:52:24,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:52:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2024-10-10 23:52:24,349 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:52:24,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535201935] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:24,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:52:24,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-10 23:52:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352718219] [2024-10-10 23:52:24,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:24,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:24,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:24,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:52:24,353 INFO L87 Difference]: Start difference. First operand 36573 states and 39868 transitions. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 23:52:26,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:26,441 INFO L93 Difference]: Finished difference Result 81425 states and 90302 transitions. [2024-10-10 23:52:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:26,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 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 1039 [2024-10-10 23:52:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:26,504 INFO L225 Difference]: With dead ends: 81425 [2024-10-10 23:52:26,505 INFO L226 Difference]: Without dead ends: 46233 [2024-10-10 23:52:26,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 1038 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:52:26,525 INFO L432 NwaCegarLoop]: 1131 mSDtfsCounter, 670 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:26,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1137 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-10 23:52:26,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46233 states. [2024-10-10 23:52:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46233 to 45543. [2024-10-10 23:52:27,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45543 states, 45542 states have (on average 1.0876333933511924) internal successors, (49533), 45542 states have internal predecessors, (49533), 0 states have call successors, (0), 0 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 23:52:27,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45543 states to 45543 states and 49533 transitions. [2024-10-10 23:52:27,082 INFO L78 Accepts]: Start accepts. Automaton has 45543 states and 49533 transitions. Word has length 1039 [2024-10-10 23:52:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:27,083 INFO L471 AbstractCegarLoop]: Abstraction has 45543 states and 49533 transitions. [2024-10-10 23:52:27,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 23:52:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 45543 states and 49533 transitions. [2024-10-10 23:52:27,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1114 [2024-10-10 23:52:27,102 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:27,102 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:52:27,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 23:52:27,303 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,SelfDestructingSolverStorable11 [2024-10-10 23:52:27,304 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:27,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1490298393, now seen corresponding path program 1 times [2024-10-10 23:52:27,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:27,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150649169] [2024-10-10 23:52:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 704 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-10-10 23:52:28,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:28,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150649169] [2024-10-10 23:52:28,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150649169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:28,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 23:52:28,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 23:52:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548089021] [2024-10-10 23:52:28,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:28,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:28,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:28,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 23:52:28,534 INFO L87 Difference]: Start difference. First operand 45543 states and 49533 transitions. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 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 23:52:30,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:30,294 INFO L93 Difference]: Finished difference Result 89705 states and 97681 transitions. [2024-10-10 23:52:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:30,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 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 1113 [2024-10-10 23:52:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:30,340 INFO L225 Difference]: With dead ends: 89705 [2024-10-10 23:52:30,340 INFO L226 Difference]: Without dead ends: 45543 [2024-10-10 23:52:30,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 23:52:30,370 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 681 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:30,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 75 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-10 23:52:30,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45543 states. [2024-10-10 23:52:30,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45543 to 41403. [2024-10-10 23:52:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41403 states, 41402 states have (on average 1.0849717404956283) internal successors, (44920), 41402 states have internal predecessors, (44920), 0 states have call successors, (0), 0 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 23:52:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41403 states to 41403 states and 44920 transitions. [2024-10-10 23:52:30,983 INFO L78 Accepts]: Start accepts. Automaton has 41403 states and 44920 transitions. Word has length 1113 [2024-10-10 23:52:30,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:30,983 INFO L471 AbstractCegarLoop]: Abstraction has 41403 states and 44920 transitions. [2024-10-10 23:52:30,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 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 23:52:30,984 INFO L276 IsEmpty]: Start isEmpty. Operand 41403 states and 44920 transitions. [2024-10-10 23:52:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2024-10-10 23:52:30,998 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:30,999 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 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 23:52:30,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-10 23:52:31,000 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:31,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:31,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1587831711, now seen corresponding path program 1 times [2024-10-10 23:52:31,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:31,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189736376] [2024-10-10 23:52:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:31,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 314 proven. 841 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-10 23:52:32,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:32,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189736376] [2024-10-10 23:52:32,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189736376] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:52:32,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981703734] [2024-10-10 23:52:32,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:32,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:32,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:52:32,830 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 23:52:32,832 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 23:52:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:33,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:52:33,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:52:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2024-10-10 23:52:33,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:52:33,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981703734] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:33,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:52:33,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-10-10 23:52:33,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624078832] [2024-10-10 23:52:33,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:33,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:33,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:33,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:52:33,307 INFO L87 Difference]: Start difference. First operand 41403 states and 44920 transitions. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 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 23:52:35,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:35,231 INFO L93 Difference]: Finished difference Result 81425 states and 88455 transitions. [2024-10-10 23:52:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:35,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 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 1118 [2024-10-10 23:52:35,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:35,286 INFO L225 Difference]: With dead ends: 81425 [2024-10-10 23:52:35,286 INFO L226 Difference]: Without dead ends: 41403 [2024-10-10 23:52:35,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1125 GetRequests, 1118 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 23:52:35,314 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 698 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:35,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 168 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-10 23:52:35,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41403 states. [2024-10-10 23:52:35,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41403 to 41403. [2024-10-10 23:52:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41403 states, 41402 states have (on average 1.0655282353509492) internal successors, (44115), 41402 states have internal predecessors, (44115), 0 states have call successors, (0), 0 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 23:52:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41403 states to 41403 states and 44115 transitions. [2024-10-10 23:52:35,818 INFO L78 Accepts]: Start accepts. Automaton has 41403 states and 44115 transitions. Word has length 1118 [2024-10-10 23:52:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:35,819 INFO L471 AbstractCegarLoop]: Abstraction has 41403 states and 44115 transitions. [2024-10-10 23:52:35,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 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 23:52:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 41403 states and 44115 transitions. [2024-10-10 23:52:35,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1124 [2024-10-10 23:52:35,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:35,838 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:52:35,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 23:52:36,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:36,039 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:36,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:36,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1250053115, now seen corresponding path program 1 times [2024-10-10 23:52:36,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:36,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807464152] [2024-10-10 23:52:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:36,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 629 proven. 48 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-10-10 23:52:37,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807464152] [2024-10-10 23:52:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807464152] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:52:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837290929] [2024-10-10 23:52:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:37,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:37,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:52:37,531 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 23:52:37,533 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 23:52:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:37,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:52:37,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:52:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2024-10-10 23:52:37,915 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:52:37,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837290929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:37,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:52:37,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-10 23:52:37,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116062698] [2024-10-10 23:52:37,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:37,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:37,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:52:37,918 INFO L87 Difference]: Start difference. First operand 41403 states and 44115 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 23:52:39,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:39,944 INFO L93 Difference]: Finished difference Result 96605 states and 103632 transitions. [2024-10-10 23:52:39,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:39,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 1123 [2024-10-10 23:52:39,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:40,006 INFO L225 Difference]: With dead ends: 96605 [2024-10-10 23:52:40,006 INFO L226 Difference]: Without dead ends: 56583 [2024-10-10 23:52:40,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 1123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 23:52:40,037 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 672 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:40,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 360 Invalid, 2398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-10 23:52:40,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56583 states. [2024-10-10 23:52:40,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56583 to 51753. [2024-10-10 23:52:40,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51753 states, 51752 states have (on average 1.0691953934147473) internal successors, (55333), 51752 states have internal predecessors, (55333), 0 states have call successors, (0), 0 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 23:52:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51753 states to 51753 states and 55333 transitions. [2024-10-10 23:52:40,620 INFO L78 Accepts]: Start accepts. Automaton has 51753 states and 55333 transitions. Word has length 1123 [2024-10-10 23:52:40,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:40,621 INFO L471 AbstractCegarLoop]: Abstraction has 51753 states and 55333 transitions. [2024-10-10 23:52:40,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 23:52:40,621 INFO L276 IsEmpty]: Start isEmpty. Operand 51753 states and 55333 transitions. [2024-10-10 23:52:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2024-10-10 23:52:40,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:40,632 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 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, 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 23:52:40,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 23:52:40,832 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 23:52:40,833 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:40,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:40,833 INFO L85 PathProgramCache]: Analyzing trace with hash -611044590, now seen corresponding path program 1 times [2024-10-10 23:52:40,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:40,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609814311] [2024-10-10 23:52:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:40,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 777 proven. 330 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-10-10 23:52:42,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:42,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609814311] [2024-10-10 23:52:42,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609814311] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:52:42,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217302558] [2024-10-10 23:52:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:42,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:42,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:52:42,787 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 23:52:42,788 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 23:52:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:43,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:52:43,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:52:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 666 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-10-10 23:52:43,315 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:52:43,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217302558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:43,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:52:43,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-10 23:52:43,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506523425] [2024-10-10 23:52:43,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:43,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:43,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:43,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:43,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:52:43,319 INFO L87 Difference]: Start difference. First operand 51753 states and 55333 transitions. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 23:52:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:45,568 INFO L93 Difference]: Finished difference Result 115235 states and 123863 transitions. [2024-10-10 23:52:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:45,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 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 1130 [2024-10-10 23:52:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:45,633 INFO L225 Difference]: With dead ends: 115235 [2024-10-10 23:52:45,634 INFO L226 Difference]: Without dead ends: 60033 [2024-10-10 23:52:45,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1136 GetRequests, 1129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-10 23:52:45,670 INFO L432 NwaCegarLoop]: 1105 mSDtfsCounter, 634 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:45,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1110 Invalid, 2235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-10 23:52:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60033 states. [2024-10-10 23:52:46,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60033 to 57963. [2024-10-10 23:52:46,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57963 states, 57962 states have (on average 1.038628756771678) internal successors, (60201), 57962 states have internal predecessors, (60201), 0 states have call successors, (0), 0 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 23:52:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57963 states to 57963 states and 60201 transitions. [2024-10-10 23:52:46,335 INFO L78 Accepts]: Start accepts. Automaton has 57963 states and 60201 transitions. Word has length 1130 [2024-10-10 23:52:46,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:46,336 INFO L471 AbstractCegarLoop]: Abstraction has 57963 states and 60201 transitions. [2024-10-10 23:52:46,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 23:52:46,337 INFO L276 IsEmpty]: Start isEmpty. Operand 57963 states and 60201 transitions. [2024-10-10 23:52:46,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1222 [2024-10-10 23:52:46,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:46,353 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:52:46,367 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 23:52:46,553 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 23:52:46,554 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:46,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash -49312440, now seen corresponding path program 1 times [2024-10-10 23:52:46,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:46,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179708751] [2024-10-10 23:52:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 756 proven. 437 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-10-10 23:52:48,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:48,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179708751] [2024-10-10 23:52:48,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179708751] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:52:48,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875063118] [2024-10-10 23:52:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:48,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:48,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:52:48,504 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 23:52:48,505 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 23:52:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:48,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:52:48,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:52:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 598 proven. 0 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2024-10-10 23:52:48,902 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:52:48,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875063118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:48,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:52:48,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 23:52:48,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417199363] [2024-10-10 23:52:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:48,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:48,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:48,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:52:48,906 INFO L87 Difference]: Start difference. First operand 57963 states and 60201 transitions. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 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 23:52:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 23:52:50,565 INFO L93 Difference]: Finished difference Result 119375 states and 123918 transitions. [2024-10-10 23:52:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 23:52:50,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 1221 [2024-10-10 23:52:50,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 23:52:50,626 INFO L225 Difference]: With dead ends: 119375 [2024-10-10 23:52:50,626 INFO L226 Difference]: Without dead ends: 57273 [2024-10-10 23:52:50,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1226 GetRequests, 1221 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:52:50,663 INFO L432 NwaCegarLoop]: 810 mSDtfsCounter, 635 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-10 23:52:50,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 815 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-10 23:52:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57273 states. [2024-10-10 23:52:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57273 to 56583. [2024-10-10 23:52:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56583 states, 56582 states have (on average 1.030009543671132) internal successors, (58280), 56582 states have internal predecessors, (58280), 0 states have call successors, (0), 0 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 23:52:51,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56583 states to 56583 states and 58280 transitions. [2024-10-10 23:52:51,173 INFO L78 Accepts]: Start accepts. Automaton has 56583 states and 58280 transitions. Word has length 1221 [2024-10-10 23:52:51,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 23:52:51,174 INFO L471 AbstractCegarLoop]: Abstraction has 56583 states and 58280 transitions. [2024-10-10 23:52:51,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 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 23:52:51,174 INFO L276 IsEmpty]: Start isEmpty. Operand 56583 states and 58280 transitions. [2024-10-10 23:52:51,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1223 [2024-10-10 23:52:51,186 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 23:52:51,187 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:52:51,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 23:52:51,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-10 23:52:51,388 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 23:52:51,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 23:52:51,389 INFO L85 PathProgramCache]: Analyzing trace with hash 911598915, now seen corresponding path program 1 times [2024-10-10 23:52:51,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 23:52:51,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214960142] [2024-10-10 23:52:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:51,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 23:52:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 856 proven. 581 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-10-10 23:52:53,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 23:52:53,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214960142] [2024-10-10 23:52:53,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214960142] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 23:52:53,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020287437] [2024-10-10 23:52:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 23:52:53,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 23:52:53,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 23:52:53,193 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 23:52:53,194 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 23:52:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 23:52:53,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 23:52:53,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 23:52:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 989 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2024-10-10 23:52:53,658 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 23:52:53,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020287437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 23:52:53,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 23:52:53,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-10 23:52:53,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808229487] [2024-10-10 23:52:53,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 23:52:53,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 23:52:53,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 23:52:53,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 23:52:53,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-10 23:52:53,664 INFO L87 Difference]: Start difference. First operand 56583 states and 58280 transitions. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)