./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-84.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-84.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a38816720abe2c19fbd70680349ed59f349bca0e0acac641469a31f37cd07bb9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 00:07:41,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 00:07:41,623 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 00:07:41,632 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 00:07:41,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 00:07:41,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 00:07:41,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 00:07:41,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 00:07:41,666 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 00:07:41,667 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 00:07:41,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 00:07:41,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 00:07:41,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 00:07:41,672 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 00:07:41,673 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 00:07:41,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 00:07:41,674 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 00:07:41,674 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 00:07:41,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 00:07:41,675 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 00:07:41,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 00:07:41,675 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 00:07:41,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 00:07:41,676 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 00:07:41,676 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 00:07:41,677 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 00:07:41,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 00:07:41,678 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 00:07:41,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 00:07:41,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 00:07:41,678 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 00:07:41,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 00:07:41,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:07:41,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 00:07:41,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 00:07:41,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 00:07:41,680 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 00:07:41,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 00:07:41,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 00:07:41,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 00:07:41,681 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 00:07:41,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 00:07:41,682 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38816720abe2c19fbd70680349ed59f349bca0e0acac641469a31f37cd07bb9 [2024-11-19 00:07:41,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 00:07:41,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 00:07:41,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 00:07:41,990 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 00:07:41,991 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 00:07:41,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-84.i [2024-11-19 00:07:43,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 00:07:43,810 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 00:07:43,811 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-84.i [2024-11-19 00:07:43,831 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff506d03a/7d9a5ef7703648cc94ccfb4fd56086f2/FLAG8bdc7a68a [2024-11-19 00:07:44,094 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff506d03a/7d9a5ef7703648cc94ccfb4fd56086f2 [2024-11-19 00:07:44,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 00:07:44,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 00:07:44,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 00:07:44,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 00:07:44,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 00:07:44,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:44,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782b62cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44, skipping insertion in model container [2024-11-19 00:07:44,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:44,180 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 00:07:44,414 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-84.i[916,929] [2024-11-19 00:07:44,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:07:44,728 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 00:07:44,743 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-84.i[916,929] [2024-11-19 00:07:44,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:07:44,873 INFO L204 MainTranslator]: Completed translation [2024-11-19 00:07:44,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44 WrapperNode [2024-11-19 00:07:44,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 00:07:44,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 00:07:44,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 00:07:44,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 00:07:44,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:44,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:45,048 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 687 [2024-11-19 00:07:45,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 00:07:45,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 00:07:45,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 00:07:45,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 00:07:45,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:45,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:45,117 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:45,216 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 00:07:45,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:45,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:45,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:45,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:45,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:45,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:45,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 00:07:45,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 00:07:45,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 00:07:45,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 00:07:45,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (1/1) ... [2024-11-19 00:07:45,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:07:45,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:07:45,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 00:07:45,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 00:07:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 00:07:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 00:07:45,478 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 00:07:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 00:07:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 00:07:45,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 00:07:45,620 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 00:07:45,623 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 00:07:47,023 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-11-19 00:07:47,024 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 00:07:47,052 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 00:07:47,054 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 00:07:47,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:07:47 BoogieIcfgContainer [2024-11-19 00:07:47,055 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 00:07:47,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 00:07:47,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 00:07:47,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 00:07:47,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 12:07:44" (1/3) ... [2024-11-19 00:07:47,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b95c048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:07:47, skipping insertion in model container [2024-11-19 00:07:47,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:07:44" (2/3) ... [2024-11-19 00:07:47,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b95c048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:07:47, skipping insertion in model container [2024-11-19 00:07:47,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:07:47" (3/3) ... [2024-11-19 00:07:47,067 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-84.i [2024-11-19 00:07:47,085 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 00:07:47,086 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 00:07:47,178 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 00:07:47,186 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;@2bc7bd32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 00:07:47,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 00:07:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 282 states, 202 states have (on average 1.5643564356435644) internal successors, (316), 203 states have internal predecessors, (316), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-19 00:07:47,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-19 00:07:47,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:47,234 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:47,234 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:47,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:47,241 INFO L85 PathProgramCache]: Analyzing trace with hash -138330767, now seen corresponding path program 1 times [2024-11-19 00:07:47,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:47,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172632814] [2024-11-19 00:07:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:47,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2024-11-19 00:07:48,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:48,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172632814] [2024-11-19 00:07:48,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172632814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:07:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100779573] [2024-11-19 00:07:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:48,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:07:48,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:07:48,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:07:48,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 00:07:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:48,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 00:07:48,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:07:48,598 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2024-11-19 00:07:48,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:07:48,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100779573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:48,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:07:48,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 00:07:48,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489458098] [2024-11-19 00:07:48,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:48,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 00:07:48,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:48,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 00:07:48,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:07:48,637 INFO L87 Difference]: Start difference. First operand has 282 states, 202 states have (on average 1.5643564356435644) internal successors, (316), 203 states have internal predecessors, (316), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-19 00:07:48,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:48,693 INFO L93 Difference]: Finished difference Result 553 states and 1003 transitions. [2024-11-19 00:07:48,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 00:07:48,698 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) Word has length 512 [2024-11-19 00:07:48,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:48,709 INFO L225 Difference]: With dead ends: 553 [2024-11-19 00:07:48,709 INFO L226 Difference]: Without dead ends: 274 [2024-11-19 00:07:48,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:07:48,721 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:48,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:07:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-19 00:07:48,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2024-11-19 00:07:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 195 states have (on average 1.5333333333333334) internal successors, (299), 195 states have internal predecessors, (299), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-19 00:07:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 453 transitions. [2024-11-19 00:07:48,824 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 453 transitions. Word has length 512 [2024-11-19 00:07:48,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:48,827 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 453 transitions. [2024-11-19 00:07:48,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-19 00:07:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 453 transitions. [2024-11-19 00:07:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-19 00:07:48,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:48,846 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:48,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 00:07:49,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 00:07:49,052 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:49,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1500558475, now seen corresponding path program 1 times [2024-11-19 00:07:49,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:49,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363224602] [2024-11-19 00:07:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-19 00:07:49,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:49,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363224602] [2024-11-19 00:07:49,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363224602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:49,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:49,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:07:49,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669377940] [2024-11-19 00:07:49,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:49,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:07:49,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:49,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:07:49,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:07:49,675 INFO L87 Difference]: Start difference. First operand 274 states and 453 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:07:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:49,836 INFO L93 Difference]: Finished difference Result 814 states and 1349 transitions. [2024-11-19 00:07:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:07:49,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 512 [2024-11-19 00:07:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:49,848 INFO L225 Difference]: With dead ends: 814 [2024-11-19 00:07:49,849 INFO L226 Difference]: Without dead ends: 543 [2024-11-19 00:07:49,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:07:49,854 INFO L432 NwaCegarLoop]: 641 mSDtfsCounter, 438 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:49,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1069 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:07:49,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-19 00:07:49,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 335. [2024-11-19 00:07:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 256 states have (on average 1.578125) internal successors, (404), 256 states have internal predecessors, (404), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-19 00:07:49,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 558 transitions. [2024-11-19 00:07:49,926 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 558 transitions. Word has length 512 [2024-11-19 00:07:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:49,931 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 558 transitions. [2024-11-19 00:07:49,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:07:49,932 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 558 transitions. [2024-11-19 00:07:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-19 00:07:49,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:49,943 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:49,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 00:07:49,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:49,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:49,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1578255095, now seen corresponding path program 1 times [2024-11-19 00:07:49,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:49,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071342620] [2024-11-19 00:07:49,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:49,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-19 00:07:52,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:52,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071342620] [2024-11-19 00:07:52,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071342620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:52,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:52,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 00:07:52,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289274496] [2024-11-19 00:07:52,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:52,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:07:52,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:52,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:07:52,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:07:52,024 INFO L87 Difference]: Start difference. First operand 335 states and 558 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:07:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:53,712 INFO L93 Difference]: Finished difference Result 1582 states and 2638 transitions. [2024-11-19 00:07:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 00:07:53,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 512 [2024-11-19 00:07:53,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:53,722 INFO L225 Difference]: With dead ends: 1582 [2024-11-19 00:07:53,722 INFO L226 Difference]: Without dead ends: 1250 [2024-11-19 00:07:53,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:07:53,725 INFO L432 NwaCegarLoop]: 810 mSDtfsCounter, 1417 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:53,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 3129 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 00:07:53,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2024-11-19 00:07:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 947. [2024-11-19 00:07:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 762 states have (on average 1.5879265091863517) internal successors, (1210), 764 states have internal predecessors, (1210), 180 states have call successors, (180), 4 states have call predecessors, (180), 4 states have return successors, (180), 178 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-19 00:07:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1570 transitions. [2024-11-19 00:07:53,851 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1570 transitions. Word has length 512 [2024-11-19 00:07:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:53,855 INFO L471 AbstractCegarLoop]: Abstraction has 947 states and 1570 transitions. [2024-11-19 00:07:53,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:07:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1570 transitions. [2024-11-19 00:07:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-19 00:07:53,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:53,869 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:53,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 00:07:53,869 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:53,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:53,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2059335353, now seen corresponding path program 1 times [2024-11-19 00:07:53,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:53,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379477792] [2024-11-19 00:07:53,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:53,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-19 00:07:55,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:55,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379477792] [2024-11-19 00:07:55,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379477792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:55,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:55,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:07:55,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930203429] [2024-11-19 00:07:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:55,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:07:55,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:07:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:07:55,069 INFO L87 Difference]: Start difference. First operand 947 states and 1570 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:07:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:55,210 INFO L93 Difference]: Finished difference Result 2835 states and 4704 transitions. [2024-11-19 00:07:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:07:55,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 512 [2024-11-19 00:07:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:55,227 INFO L225 Difference]: With dead ends: 2835 [2024-11-19 00:07:55,228 INFO L226 Difference]: Without dead ends: 1891 [2024-11-19 00:07:55,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:07:55,233 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 274 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:55,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 892 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:07:55,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2024-11-19 00:07:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1883. [2024-11-19 00:07:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1514 states have (on average 1.5878467635402906) internal successors, (2404), 1518 states have internal predecessors, (2404), 360 states have call successors, (360), 8 states have call predecessors, (360), 8 states have return successors, (360), 356 states have call predecessors, (360), 360 states have call successors, (360) [2024-11-19 00:07:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3124 transitions. [2024-11-19 00:07:55,475 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3124 transitions. Word has length 512 [2024-11-19 00:07:55,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:55,476 INFO L471 AbstractCegarLoop]: Abstraction has 1883 states and 3124 transitions. [2024-11-19 00:07:55,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:07:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3124 transitions. [2024-11-19 00:07:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-19 00:07:55,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:55,486 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:55,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 00:07:55,486 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:55,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:55,487 INFO L85 PathProgramCache]: Analyzing trace with hash -673131959, now seen corresponding path program 1 times [2024-11-19 00:07:55,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:55,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168086751] [2024-11-19 00:07:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:55,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:07:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:07:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-19 00:07:57,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:07:57,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168086751] [2024-11-19 00:07:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168086751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:07:57,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:07:57,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:07:57,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105964726] [2024-11-19 00:07:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:07:57,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:07:57,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:07:57,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:07:57,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:07:57,298 INFO L87 Difference]: Start difference. First operand 1883 states and 3124 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:07:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:07:58,175 INFO L93 Difference]: Finished difference Result 4699 states and 7790 transitions. [2024-11-19 00:07:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:07:58,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 512 [2024-11-19 00:07:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:07:58,194 INFO L225 Difference]: With dead ends: 4699 [2024-11-19 00:07:58,195 INFO L226 Difference]: Without dead ends: 2819 [2024-11-19 00:07:58,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:07:58,202 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 326 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 00:07:58,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1605 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 00:07:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2024-11-19 00:07:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2016. [2024-11-19 00:07:58,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1569 states have (on average 1.5691523263224985) internal successors, (2462), 1573 states have internal predecessors, (2462), 437 states have call successors, (437), 9 states have call predecessors, (437), 9 states have return successors, (437), 433 states have call predecessors, (437), 437 states have call successors, (437) [2024-11-19 00:07:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3336 transitions. [2024-11-19 00:07:58,434 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3336 transitions. Word has length 512 [2024-11-19 00:07:58,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:07:58,437 INFO L471 AbstractCegarLoop]: Abstraction has 2016 states and 3336 transitions. [2024-11-19 00:07:58,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:07:58,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3336 transitions. [2024-11-19 00:07:58,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-19 00:07:58,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:07:58,446 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:07:58,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 00:07:58,447 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:07:58,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:07:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1782710390, now seen corresponding path program 1 times [2024-11-19 00:07:58,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:07:58,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608482375] [2024-11-19 00:07:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:07:58,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 39 proven. 189 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-19 00:08:02,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:02,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608482375] [2024-11-19 00:08:02,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608482375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:08:02,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583084530] [2024-11-19 00:08:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:02,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:08:02,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:08:02,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:08:02,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 00:08:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:02,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 00:08:02,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:08:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4122 proven. 177 refuted. 0 times theorem prover too weak. 7405 trivial. 0 not checked. [2024-11-19 00:08:05,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:08:06,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583084530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:08:06,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 00:08:06,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2024-11-19 00:08:06,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368703620] [2024-11-19 00:08:06,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 00:08:06,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 00:08:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:08:06,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 00:08:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-19 00:08:06,124 INFO L87 Difference]: Start difference. First operand 2016 states and 3336 transitions. Second operand has 13 states, 13 states have (on average 19.846153846153847) internal successors, (258), 13 states have internal predecessors, (258), 4 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) [2024-11-19 00:08:09,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:08:09,656 INFO L93 Difference]: Finished difference Result 6230 states and 10288 transitions. [2024-11-19 00:08:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-19 00:08:09,658 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.846153846153847) internal successors, (258), 13 states have internal predecessors, (258), 4 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) Word has length 514 [2024-11-19 00:08:09,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:08:09,687 INFO L225 Difference]: With dead ends: 6230 [2024-11-19 00:08:09,688 INFO L226 Difference]: Without dead ends: 4350 [2024-11-19 00:08:09,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=361, Invalid=1445, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 00:08:09,700 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 2398 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2415 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-19 00:08:09,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2415 Valid, 3076 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-19 00:08:09,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2024-11-19 00:08:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 2902. [2024-11-19 00:08:09,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2189 states have (on average 1.5550479671082686) internal successors, (3404), 2189 states have internal predecessors, (3404), 693 states have call successors, (693), 19 states have call predecessors, (693), 19 states have return successors, (693), 693 states have call predecessors, (693), 693 states have call successors, (693) [2024-11-19 00:08:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 4790 transitions. [2024-11-19 00:08:10,035 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 4790 transitions. Word has length 514 [2024-11-19 00:08:10,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:08:10,036 INFO L471 AbstractCegarLoop]: Abstraction has 2902 states and 4790 transitions. [2024-11-19 00:08:10,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.846153846153847) internal successors, (258), 13 states have internal predecessors, (258), 4 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (154), 4 states have call predecessors, (154), 4 states have call successors, (154) [2024-11-19 00:08:10,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 4790 transitions. [2024-11-19 00:08:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-19 00:08:10,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:08:10,042 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:08:10,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 00:08:10,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 00:08:10,247 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:08:10,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:08:10,250 INFO L85 PathProgramCache]: Analyzing trace with hash -463442954, now seen corresponding path program 1 times [2024-11-19 00:08:10,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:08:10,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955094989] [2024-11-19 00:08:10,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:10,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 111 proven. 117 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-19 00:08:13,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955094989] [2024-11-19 00:08:13,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955094989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:08:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340583831] [2024-11-19 00:08:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:13,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:08:13,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:08:13,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:08:13,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 00:08:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:13,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 00:08:13,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:08:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 2388 proven. 24 refuted. 0 times theorem prover too weak. 9292 trivial. 0 not checked. [2024-11-19 00:08:13,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:08:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 204 proven. 24 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-19 00:08:14,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340583831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:08:14,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:08:14,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-19 00:08:14,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678024208] [2024-11-19 00:08:14,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:08:14,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 00:08:14,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:08:14,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 00:08:14,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:08:14,005 INFO L87 Difference]: Start difference. First operand 2902 states and 4790 transitions. Second operand has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2024-11-19 00:08:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:08:15,402 INFO L93 Difference]: Finished difference Result 5232 states and 8616 transitions. [2024-11-19 00:08:15,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 00:08:15,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) Word has length 514 [2024-11-19 00:08:15,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:08:15,422 INFO L225 Difference]: With dead ends: 5232 [2024-11-19 00:08:15,422 INFO L226 Difference]: Without dead ends: 2470 [2024-11-19 00:08:15,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 1028 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-19 00:08:15,433 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 2024 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:08:15,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 1156 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 00:08:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2024-11-19 00:08:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2288. [2024-11-19 00:08:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 1803 states have (on average 1.531336661120355) internal successors, (2761), 1805 states have internal predecessors, (2761), 459 states have call successors, (459), 25 states have call predecessors, (459), 25 states have return successors, (459), 457 states have call predecessors, (459), 459 states have call successors, (459) [2024-11-19 00:08:15,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 3679 transitions. [2024-11-19 00:08:15,723 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 3679 transitions. Word has length 514 [2024-11-19 00:08:15,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:08:15,724 INFO L471 AbstractCegarLoop]: Abstraction has 2288 states and 3679 transitions. [2024-11-19 00:08:15,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 3 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2024-11-19 00:08:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 3679 transitions. [2024-11-19 00:08:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-19 00:08:15,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:08:15,731 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:08:15,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 00:08:15,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:08:15,932 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:08:15,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:08:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2122866760, now seen corresponding path program 1 times [2024-11-19 00:08:15,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:08:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652238148] [2024-11-19 00:08:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-19 00:08:17,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:17,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652238148] [2024-11-19 00:08:17,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652238148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:08:17,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:08:17,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:08:17,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359912796] [2024-11-19 00:08:17,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:08:17,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:08:17,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:08:17,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:08:17,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:08:17,249 INFO L87 Difference]: Start difference. First operand 2288 states and 3679 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:08:17,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:08:17,716 INFO L93 Difference]: Finished difference Result 3988 states and 6427 transitions. [2024-11-19 00:08:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:08:17,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 514 [2024-11-19 00:08:17,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:08:17,731 INFO L225 Difference]: With dead ends: 3988 [2024-11-19 00:08:17,732 INFO L226 Difference]: Without dead ends: 2590 [2024-11-19 00:08:17,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:08:17,738 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 869 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:08:17,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1467 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:08:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2024-11-19 00:08:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2210. [2024-11-19 00:08:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 1725 states have (on average 1.5217391304347827) internal successors, (2625), 1727 states have internal predecessors, (2625), 459 states have call successors, (459), 25 states have call predecessors, (459), 25 states have return successors, (459), 457 states have call predecessors, (459), 459 states have call successors, (459) [2024-11-19 00:08:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3543 transitions. [2024-11-19 00:08:17,950 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3543 transitions. Word has length 514 [2024-11-19 00:08:17,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:08:17,951 INFO L471 AbstractCegarLoop]: Abstraction has 2210 states and 3543 transitions. [2024-11-19 00:08:17,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:08:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3543 transitions. [2024-11-19 00:08:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-19 00:08:17,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:08:17,956 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:08:17,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 00:08:17,956 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:08:17,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:08:17,957 INFO L85 PathProgramCache]: Analyzing trace with hash 226500269, now seen corresponding path program 1 times [2024-11-19 00:08:17,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:08:17,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913801251] [2024-11-19 00:08:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:17,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 39 proven. 189 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-19 00:08:19,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:19,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913801251] [2024-11-19 00:08:19,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913801251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:08:19,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133753535] [2024-11-19 00:08:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:19,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:08:19,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:08:19,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:08:19,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 00:08:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:20,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 00:08:20,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:08:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 2848 proven. 30 refuted. 0 times theorem prover too weak. 8826 trivial. 0 not checked. [2024-11-19 00:08:20,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:08:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 198 proven. 30 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-19 00:08:20,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133753535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:08:20,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:08:20,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2024-11-19 00:08:20,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125964793] [2024-11-19 00:08:20,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:08:20,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:08:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:08:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:08:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:08:20,838 INFO L87 Difference]: Start difference. First operand 2210 states and 3543 transitions. Second operand has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 4 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 4 states have call predecessors, (165), 4 states have call successors, (165) [2024-11-19 00:08:22,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:08:22,805 INFO L93 Difference]: Finished difference Result 7364 states and 11829 transitions. [2024-11-19 00:08:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 00:08:22,807 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 4 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 4 states have call predecessors, (165), 4 states have call successors, (165) Word has length 515 [2024-11-19 00:08:22,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:08:22,842 INFO L225 Difference]: With dead ends: 7364 [2024-11-19 00:08:22,842 INFO L226 Difference]: Without dead ends: 5314 [2024-11-19 00:08:22,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 1028 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2024-11-19 00:08:22,852 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 1665 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:08:22,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 2143 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 00:08:22,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5314 states. [2024-11-19 00:08:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 4248. [2024-11-19 00:08:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4248 states, 3349 states have (on average 1.490295610630039) internal successors, (4991), 3353 states have internal predecessors, (4991), 841 states have call successors, (841), 57 states have call predecessors, (841), 57 states have return successors, (841), 837 states have call predecessors, (841), 841 states have call successors, (841) [2024-11-19 00:08:23,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4248 states to 4248 states and 6673 transitions. [2024-11-19 00:08:23,252 INFO L78 Accepts]: Start accepts. Automaton has 4248 states and 6673 transitions. Word has length 515 [2024-11-19 00:08:23,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:08:23,253 INFO L471 AbstractCegarLoop]: Abstraction has 4248 states and 6673 transitions. [2024-11-19 00:08:23,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 4 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 4 states have call predecessors, (165), 4 states have call successors, (165) [2024-11-19 00:08:23,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4248 states and 6673 transitions. [2024-11-19 00:08:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-19 00:08:23,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:08:23,320 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:08:23,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 00:08:23,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:08:23,525 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:08:23,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:08:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash 249794343, now seen corresponding path program 1 times [2024-11-19 00:08:23,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:08:23,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603919501] [2024-11-19 00:08:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:23,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-19 00:08:24,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:24,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603919501] [2024-11-19 00:08:24,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603919501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:08:24,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:08:24,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:08:24,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815404476] [2024-11-19 00:08:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:08:24,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:08:24,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:08:24,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:08:24,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:08:24,294 INFO L87 Difference]: Start difference. First operand 4248 states and 6673 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-19 00:08:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:08:24,735 INFO L93 Difference]: Finished difference Result 8010 states and 12585 transitions. [2024-11-19 00:08:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:08:24,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 515 [2024-11-19 00:08:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:08:24,770 INFO L225 Difference]: With dead ends: 8010 [2024-11-19 00:08:24,770 INFO L226 Difference]: Without dead ends: 5836 [2024-11-19 00:08:24,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:08:24,782 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 388 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:08:24,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1393 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:08:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2024-11-19 00:08:25,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5834. [2024-11-19 00:08:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5834 states, 4526 states have (on average 1.4750331418471057) internal successors, (6676), 4532 states have internal predecessors, (6676), 1223 states have call successors, (1223), 84 states have call predecessors, (1223), 84 states have return successors, (1223), 1217 states have call predecessors, (1223), 1223 states have call successors, (1223) [2024-11-19 00:08:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 9122 transitions. [2024-11-19 00:08:25,336 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 9122 transitions. Word has length 515 [2024-11-19 00:08:25,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:08:25,337 INFO L471 AbstractCegarLoop]: Abstraction has 5834 states and 9122 transitions. [2024-11-19 00:08:25,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-19 00:08:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 9122 transitions. [2024-11-19 00:08:25,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-19 00:08:25,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:08:25,343 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:08:25,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 00:08:25,343 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:08:25,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:08:25,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1632430877, now seen corresponding path program 1 times [2024-11-19 00:08:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:08:25,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791912305] [2024-11-19 00:08:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:25,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-19 00:08:25,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:25,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791912305] [2024-11-19 00:08:25,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791912305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:08:25,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:08:25,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:08:25,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599691546] [2024-11-19 00:08:25,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:08:25,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:08:25,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:08:25,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:08:25,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:08:25,903 INFO L87 Difference]: Start difference. First operand 5834 states and 9122 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:08:26,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:08:26,255 INFO L93 Difference]: Finished difference Result 11987 states and 18863 transitions. [2024-11-19 00:08:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:08:26,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 515 [2024-11-19 00:08:26,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:08:26,300 INFO L225 Difference]: With dead ends: 11987 [2024-11-19 00:08:26,300 INFO L226 Difference]: Without dead ends: 6314 [2024-11-19 00:08:26,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:08:26,320 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 308 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:08:26,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 940 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:08:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6314 states. [2024-11-19 00:08:26,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6314 to 5916. [2024-11-19 00:08:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5916 states, 4610 states have (on average 1.4830802603036877) internal successors, (6837), 4616 states have internal predecessors, (6837), 1223 states have call successors, (1223), 82 states have call predecessors, (1223), 82 states have return successors, (1223), 1217 states have call predecessors, (1223), 1223 states have call successors, (1223) [2024-11-19 00:08:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5916 states to 5916 states and 9283 transitions. [2024-11-19 00:08:26,818 INFO L78 Accepts]: Start accepts. Automaton has 5916 states and 9283 transitions. Word has length 515 [2024-11-19 00:08:26,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:08:26,819 INFO L471 AbstractCegarLoop]: Abstraction has 5916 states and 9283 transitions. [2024-11-19 00:08:26,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:08:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5916 states and 9283 transitions. [2024-11-19 00:08:26,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-19 00:08:26,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:08:26,824 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:08:26,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 00:08:26,824 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:08:26,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:08:26,825 INFO L85 PathProgramCache]: Analyzing trace with hash 569383527, now seen corresponding path program 1 times [2024-11-19 00:08:26,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:08:26,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950321057] [2024-11-19 00:08:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:26,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-19 00:08:27,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:27,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950321057] [2024-11-19 00:08:27,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950321057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:08:27,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:08:27,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:08:27,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500049056] [2024-11-19 00:08:27,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:08:27,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:08:27,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:08:27,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:08:27,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:08:27,903 INFO L87 Difference]: Start difference. First operand 5916 states and 9283 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:08:28,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:08:28,704 INFO L93 Difference]: Finished difference Result 12754 states and 20030 transitions. [2024-11-19 00:08:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:08:28,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 515 [2024-11-19 00:08:28,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:08:28,745 INFO L225 Difference]: With dead ends: 12754 [2024-11-19 00:08:28,745 INFO L226 Difference]: Without dead ends: 8582 [2024-11-19 00:08:28,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:08:28,762 INFO L432 NwaCegarLoop]: 660 mSDtfsCounter, 837 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:08:28,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1321 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:08:28,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8582 states. [2024-11-19 00:08:29,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8582 to 5236. [2024-11-19 00:08:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5236 states, 4153 states have (on average 1.4957861786660245) internal successors, (6212), 4153 states have internal predecessors, (6212), 1001 states have call successors, (1001), 81 states have call predecessors, (1001), 81 states have return successors, (1001), 1001 states have call predecessors, (1001), 1001 states have call successors, (1001) [2024-11-19 00:08:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5236 states to 5236 states and 8214 transitions. [2024-11-19 00:08:29,235 INFO L78 Accepts]: Start accepts. Automaton has 5236 states and 8214 transitions. Word has length 515 [2024-11-19 00:08:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:08:29,236 INFO L471 AbstractCegarLoop]: Abstraction has 5236 states and 8214 transitions. [2024-11-19 00:08:29,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-19 00:08:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5236 states and 8214 transitions. [2024-11-19 00:08:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2024-11-19 00:08:29,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:08:29,241 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:08:29,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 00:08:29,241 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:08:29,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:08:29,242 INFO L85 PathProgramCache]: Analyzing trace with hash 211492294, now seen corresponding path program 1 times [2024-11-19 00:08:29,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:08:29,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786698474] [2024-11-19 00:08:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:29,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 33 proven. 195 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-19 00:08:33,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:33,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786698474] [2024-11-19 00:08:33,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786698474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:08:33,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033297357] [2024-11-19 00:08:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:33,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:08:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:08:33,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:08:33,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 00:08:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:33,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 00:08:33,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:08:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 3276 proven. 36 refuted. 0 times theorem prover too weak. 8392 trivial. 0 not checked. [2024-11-19 00:08:34,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:08:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 192 proven. 36 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-19 00:08:34,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033297357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:08:34,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:08:34,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2024-11-19 00:08:34,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64553864] [2024-11-19 00:08:34,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:08:34,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 00:08:34,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:08:34,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 00:08:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:08:34,571 INFO L87 Difference]: Start difference. First operand 5236 states and 8214 transitions. Second operand has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (156), 3 states have call predecessors, (156), 3 states have call successors, (156) [2024-11-19 00:08:36,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:08:36,563 INFO L93 Difference]: Finished difference Result 10594 states and 16422 transitions. [2024-11-19 00:08:36,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 00:08:36,564 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (156), 3 states have call predecessors, (156), 3 states have call successors, (156) Word has length 517 [2024-11-19 00:08:36,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:08:36,587 INFO L225 Difference]: With dead ends: 10594 [2024-11-19 00:08:36,587 INFO L226 Difference]: Without dead ends: 5548 [2024-11-19 00:08:36,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1065 GetRequests, 1032 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 00:08:36,600 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 1398 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:08:36,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 1119 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 00:08:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2024-11-19 00:08:37,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 5392. [2024-11-19 00:08:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 4270 states have (on average 1.4489461358313818) internal successors, (6187), 4270 states have internal predecessors, (6187), 1001 states have call successors, (1001), 120 states have call predecessors, (1001), 120 states have return successors, (1001), 1001 states have call predecessors, (1001), 1001 states have call successors, (1001) [2024-11-19 00:08:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 8189 transitions. [2024-11-19 00:08:37,043 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 8189 transitions. Word has length 517 [2024-11-19 00:08:37,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:08:37,044 INFO L471 AbstractCegarLoop]: Abstraction has 5392 states and 8189 transitions. [2024-11-19 00:08:37,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (156), 3 states have call predecessors, (156), 3 states have call successors, (156) [2024-11-19 00:08:37,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 8189 transitions. [2024-11-19 00:08:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2024-11-19 00:08:37,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:08:37,048 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:08:37,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 00:08:37,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 00:08:37,249 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:08:37,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:08:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash -885184886, now seen corresponding path program 1 times [2024-11-19 00:08:37,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:08:37,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008515515] [2024-11-19 00:08:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:08:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 81 proven. 147 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-19 00:08:39,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:08:39,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008515515] [2024-11-19 00:08:39,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008515515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:08:39,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944727649] [2024-11-19 00:08:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:08:39,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:08:39,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:08:39,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:08:39,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 00:08:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:08:39,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 00:08:39,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:08:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5449 proven. 147 refuted. 0 times theorem prover too weak. 6108 trivial. 0 not checked. [2024-11-19 00:08:41,144 INFO L311 TraceCheckSpWp]: Computing backward predicates...