./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-22.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_loopvsstraightlinecode_25-while_file-22.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 211bead296e124e614440acc5c0a2ec479c384857f4a7a38003b7b558015a0bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:52:33,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:52:33,494 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:52:33,497 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:52:33,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:52:33,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:52:33,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:52:33,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:52:33,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:52:33,550 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:52:33,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:52:33,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:52:33,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:52:33,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:52:33,552 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:52:33,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:52:33,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:52:33,553 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:52:33,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:52:33,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:52:33,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:52:33,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:52:33,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:52:33,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:52:33,562 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:52:33,562 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:52:33,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:52:33,562 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:52:33,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:52:33,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:52:33,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:52:33,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:52:33,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:52:33,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:52:33,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:52:33,565 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:52:33,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:52:33,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:52:33,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:52:33,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:52:33,567 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:52:33,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:52:33,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 211bead296e124e614440acc5c0a2ec479c384857f4a7a38003b7b558015a0bc [2024-11-18 22:52:33,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:52:33,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:52:33,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:52:33,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:52:33,894 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:52:33,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-22.i [2024-11-18 22:52:35,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:52:35,467 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:52:35,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-22.i [2024-11-18 22:52:35,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aba8ba90/44a2288624cb434e96ce9cd3c9d6bcb9/FLAG534a50adb [2024-11-18 22:52:35,840 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aba8ba90/44a2288624cb434e96ce9cd3c9d6bcb9 [2024-11-18 22:52:35,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:52:35,844 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:52:35,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:52:35,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:52:35,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:52:35,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:52:35" (1/1) ... [2024-11-18 22:52:35,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d8f523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:35, skipping insertion in model container [2024-11-18 22:52:35,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:52:35" (1/1) ... [2024-11-18 22:52:35,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:52:36,092 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_loopvsstraightlinecode_25-while_file-22.i[915,928] [2024-11-18 22:52:36,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:52:36,160 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:52:36,172 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_loopvsstraightlinecode_25-while_file-22.i[915,928] [2024-11-18 22:52:36,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:52:36,227 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:52:36,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36 WrapperNode [2024-11-18 22:52:36,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:52:36,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:52:36,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:52:36,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:52:36,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,297 INFO L138 Inliner]: procedures = 26, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2024-11-18 22:52:36,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:52:36,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:52:36,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:52:36,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:52:36,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,330 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 22:52:36,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:52:36,353 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:52:36,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:52:36,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:52:36,354 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (1/1) ... [2024-11-18 22:52:36,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:52:36,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:52:36,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 22:52:36,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 22:52:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:52:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:52:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:52:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:52:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:52:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:52:36,538 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:52:36,545 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:52:36,851 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-18 22:52:36,851 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:52:36,862 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:52:36,863 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:52:36,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:52:36 BoogieIcfgContainer [2024-11-18 22:52:36,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:52:36,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:52:36,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:52:36,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:52:36,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:52:35" (1/3) ... [2024-11-18 22:52:36,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed96c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:52:36, skipping insertion in model container [2024-11-18 22:52:36,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:52:36" (2/3) ... [2024-11-18 22:52:36,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed96c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:52:36, skipping insertion in model container [2024-11-18 22:52:36,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:52:36" (3/3) ... [2024-11-18 22:52:36,874 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-22.i [2024-11-18 22:52:36,889 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:52:36,890 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:52:36,941 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:52:36,950 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;@49d29e9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:52:36,951 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:52:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 22:52:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 22:52:36,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:36,964 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:36,965 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:36,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:36,970 INFO L85 PathProgramCache]: Analyzing trace with hash 816987956, now seen corresponding path program 1 times [2024-11-18 22:52:36,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:36,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249976631] [2024-11-18 22:52:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:36,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-18 22:52:37,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:37,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249976631] [2024-11-18 22:52:37,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249976631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:52:37,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358197014] [2024-11-18 22:52:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:37,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:52:37,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:52:37,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:52:37,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 22:52:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:37,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:52:37,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:52:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-18 22:52:37,328 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:52:37,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358197014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:52:37,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:52:37,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:52:37,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207896704] [2024-11-18 22:52:37,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:52:37,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:52:37,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:37,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:52:37,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:52:37,357 INFO L87 Difference]: Start difference. First operand has 48 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 22:52:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:37,376 INFO L93 Difference]: Finished difference Result 87 states and 135 transitions. [2024-11-18 22:52:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:52:37,379 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-11-18 22:52:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:37,385 INFO L225 Difference]: With dead ends: 87 [2024-11-18 22:52:37,386 INFO L226 Difference]: Without dead ends: 42 [2024-11-18 22:52:37,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:52:37,396 INFO L432 NwaCegarLoop]: 56 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, 56 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 [2024-11-18 22:52:37,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:52:37,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-18 22:52:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-18 22:52:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 22:52:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2024-11-18 22:52:37,439 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 58 [2024-11-18 22:52:37,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:37,439 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2024-11-18 22:52:37,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 22:52:37,440 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2024-11-18 22:52:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-18 22:52:37,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:37,442 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:37,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 22:52:37,642 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 [2024-11-18 22:52:37,643 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:37,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1731713732, now seen corresponding path program 1 times [2024-11-18 22:52:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:37,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780436240] [2024-11-18 22:52:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:37,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:38,388 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 22:52:38,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:38,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780436240] [2024-11-18 22:52:38,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780436240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:52:38,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:52:38,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:52:38,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53050947] [2024-11-18 22:52:38,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:52:38,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:52:38,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:38,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:52:38,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:52:38,393 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:38,590 INFO L93 Difference]: Finished difference Result 141 states and 189 transitions. [2024-11-18 22:52:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:52:38,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 58 [2024-11-18 22:52:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:38,592 INFO L225 Difference]: With dead ends: 141 [2024-11-18 22:52:38,592 INFO L226 Difference]: Without dead ends: 102 [2024-11-18 22:52:38,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:52:38,598 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 84 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:52:38,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 185 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:52:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-18 22:52:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 72. [2024-11-18 22:52:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 55 states have internal predecessors, (69), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-18 22:52:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2024-11-18 22:52:38,633 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 97 transitions. Word has length 58 [2024-11-18 22:52:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:38,633 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 97 transitions. [2024-11-18 22:52:38,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 97 transitions. [2024-11-18 22:52:38,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 22:52:38,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:38,637 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:38,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:52:38,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:38,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:38,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1626275922, now seen corresponding path program 1 times [2024-11-18 22:52:38,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:38,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771253156] [2024-11-18 22:52:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:38,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 22:52:38,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:38,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771253156] [2024-11-18 22:52:38,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771253156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:52:38,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:52:38,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:52:38,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958473793] [2024-11-18 22:52:38,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:52:38,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:52:38,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:52:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:52:38,969 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:39,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:39,162 INFO L93 Difference]: Finished difference Result 212 states and 281 transitions. [2024-11-18 22:52:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:52:39,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2024-11-18 22:52:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:39,165 INFO L225 Difference]: With dead ends: 212 [2024-11-18 22:52:39,165 INFO L226 Difference]: Without dead ends: 173 [2024-11-18 22:52:39,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:52:39,166 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 89 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:52:39,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 221 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:52:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-18 22:52:39,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 117. [2024-11-18 22:52:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 92 states have internal predecessors, (117), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 22:52:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 159 transitions. [2024-11-18 22:52:39,185 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 159 transitions. Word has length 59 [2024-11-18 22:52:39,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:39,185 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 159 transitions. [2024-11-18 22:52:39,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:39,186 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 159 transitions. [2024-11-18 22:52:39,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 22:52:39,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:39,187 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:39,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:52:39,188 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:39,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2081885360, now seen corresponding path program 1 times [2024-11-18 22:52:39,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:39,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287463763] [2024-11-18 22:52:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:39,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 22:52:39,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287463763] [2024-11-18 22:52:39,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287463763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:52:39,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:52:39,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:52:39,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277760007] [2024-11-18 22:52:39,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:52:39,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:52:39,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:39,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:52:39,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:52:39,225 INFO L87 Difference]: Start difference. First operand 117 states and 159 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:39,250 INFO L93 Difference]: Finished difference Result 186 states and 250 transitions. [2024-11-18 22:52:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:52:39,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2024-11-18 22:52:39,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:39,253 INFO L225 Difference]: With dead ends: 186 [2024-11-18 22:52:39,253 INFO L226 Difference]: Without dead ends: 147 [2024-11-18 22:52:39,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:52:39,255 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 25 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:52:39,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 117 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:52:39,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-18 22:52:39,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2024-11-18 22:52:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 96 states have (on average 1.2604166666666667) internal successors, (121), 96 states have internal predecessors, (121), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 22:52:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 163 transitions. [2024-11-18 22:52:39,280 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 163 transitions. Word has length 59 [2024-11-18 22:52:39,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:39,280 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 163 transitions. [2024-11-18 22:52:39,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:39,281 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 163 transitions. [2024-11-18 22:52:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 22:52:39,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:39,282 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:39,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 22:52:39,283 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:39,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1824120838, now seen corresponding path program 1 times [2024-11-18 22:52:39,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:39,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307106664] [2024-11-18 22:52:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:39,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 22:52:39,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:39,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307106664] [2024-11-18 22:52:39,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307106664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:52:39,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:52:39,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:52:39,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112503395] [2024-11-18 22:52:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:52:39,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:52:39,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:39,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:52:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:52:39,504 INFO L87 Difference]: Start difference. First operand 121 states and 163 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:39,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:39,606 INFO L93 Difference]: Finished difference Result 275 states and 369 transitions. [2024-11-18 22:52:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:52:39,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2024-11-18 22:52:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:39,610 INFO L225 Difference]: With dead ends: 275 [2024-11-18 22:52:39,610 INFO L226 Difference]: Without dead ends: 176 [2024-11-18 22:52:39,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:52:39,613 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 53 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:52:39,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 147 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:52:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-18 22:52:39,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 121. [2024-11-18 22:52:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 96 states have (on average 1.25) internal successors, (120), 96 states have internal predecessors, (120), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 22:52:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 162 transitions. [2024-11-18 22:52:39,632 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 162 transitions. Word has length 59 [2024-11-18 22:52:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:39,633 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 162 transitions. [2024-11-18 22:52:39,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:39,633 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 162 transitions. [2024-11-18 22:52:39,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 22:52:39,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:39,634 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:39,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 22:52:39,635 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:39,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:39,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1444451272, now seen corresponding path program 1 times [2024-11-18 22:52:39,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:39,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092560581] [2024-11-18 22:52:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:39,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 22:52:40,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:40,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092560581] [2024-11-18 22:52:40,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092560581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:52:40,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:52:40,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 22:52:40,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970122944] [2024-11-18 22:52:40,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:52:40,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 22:52:40,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:40,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 22:52:40,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:52:40,767 INFO L87 Difference]: Start difference. First operand 121 states and 162 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:41,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:41,031 INFO L93 Difference]: Finished difference Result 339 states and 450 transitions. [2024-11-18 22:52:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 22:52:41,031 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2024-11-18 22:52:41,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:41,033 INFO L225 Difference]: With dead ends: 339 [2024-11-18 22:52:41,033 INFO L226 Difference]: Without dead ends: 240 [2024-11-18 22:52:41,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:52:41,034 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 208 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:52:41,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 293 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:52:41,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-18 22:52:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 112. [2024-11-18 22:52:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 87 states have internal predecessors, (106), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 22:52:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2024-11-18 22:52:41,050 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 60 [2024-11-18 22:52:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:41,051 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2024-11-18 22:52:41,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:41,051 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2024-11-18 22:52:41,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 22:52:41,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:41,052 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:41,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 22:52:41,053 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:41,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash 719275552, now seen corresponding path program 1 times [2024-11-18 22:52:41,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:41,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677060942] [2024-11-18 22:52:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:41,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 22:52:41,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677060942] [2024-11-18 22:52:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677060942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:52:41,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:52:41,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:52:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683484456] [2024-11-18 22:52:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:52:41,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:52:41,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:52:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:52:41,114 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:41,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:41,171 INFO L93 Difference]: Finished difference Result 278 states and 371 transitions. [2024-11-18 22:52:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:52:41,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2024-11-18 22:52:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:41,174 INFO L225 Difference]: With dead ends: 278 [2024-11-18 22:52:41,174 INFO L226 Difference]: Without dead ends: 188 [2024-11-18 22:52:41,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:52:41,176 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 28 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:52:41,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 94 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:52:41,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-18 22:52:41,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2024-11-18 22:52:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 145 states have (on average 1.2137931034482758) internal successors, (176), 145 states have internal predecessors, (176), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 22:52:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 246 transitions. [2024-11-18 22:52:41,200 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 246 transitions. Word has length 60 [2024-11-18 22:52:41,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:41,200 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 246 transitions. [2024-11-18 22:52:41,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 246 transitions. [2024-11-18 22:52:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 22:52:41,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:41,201 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:41,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 22:52:41,202 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:41,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1142102934, now seen corresponding path program 1 times [2024-11-18 22:52:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:41,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680580257] [2024-11-18 22:52:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:41,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 22:52:41,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:41,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680580257] [2024-11-18 22:52:41,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680580257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:52:41,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:52:41,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 22:52:41,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139240511] [2024-11-18 22:52:41,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:52:41,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 22:52:41,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:41,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 22:52:41,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:52:41,875 INFO L87 Difference]: Start difference. First operand 186 states and 246 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:42,136 INFO L93 Difference]: Finished difference Result 340 states and 444 transitions. [2024-11-18 22:52:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:52:42,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2024-11-18 22:52:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:42,140 INFO L225 Difference]: With dead ends: 340 [2024-11-18 22:52:42,140 INFO L226 Difference]: Without dead ends: 262 [2024-11-18 22:52:42,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:52:42,144 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 59 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:52:42,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 211 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:52:42,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-18 22:52:42,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 203. [2024-11-18 22:52:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 162 states have (on average 1.2222222222222223) internal successors, (198), 162 states have internal predecessors, (198), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 22:52:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 268 transitions. [2024-11-18 22:52:42,173 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 268 transitions. Word has length 61 [2024-11-18 22:52:42,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:42,174 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 268 transitions. [2024-11-18 22:52:42,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:42,174 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 268 transitions. [2024-11-18 22:52:42,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 22:52:42,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:42,175 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:42,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 22:52:42,176 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:42,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:42,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1400268372, now seen corresponding path program 1 times [2024-11-18 22:52:42,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:42,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609879560] [2024-11-18 22:52:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:42,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 22:52:42,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:42,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609879560] [2024-11-18 22:52:42,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609879560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:52:42,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:52:42,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:52:42,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084063953] [2024-11-18 22:52:42,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:52:42,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:52:42,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:42,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:52:42,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:52:42,229 INFO L87 Difference]: Start difference. First operand 203 states and 268 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:42,270 INFO L93 Difference]: Finished difference Result 342 states and 452 transitions. [2024-11-18 22:52:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:52:42,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2024-11-18 22:52:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:42,272 INFO L225 Difference]: With dead ends: 342 [2024-11-18 22:52:42,272 INFO L226 Difference]: Without dead ends: 161 [2024-11-18 22:52:42,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:52:42,274 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:52:42,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 84 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:52:42,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-18 22:52:42,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 147. [2024-11-18 22:52:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 114 states have (on average 1.1754385964912282) internal successors, (134), 114 states have internal predecessors, (134), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-18 22:52:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2024-11-18 22:52:42,287 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 61 [2024-11-18 22:52:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:42,288 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2024-11-18 22:52:42,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2024-11-18 22:52:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 22:52:42,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:42,289 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:42,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 22:52:42,289 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:42,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:42,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1909669513, now seen corresponding path program 1 times [2024-11-18 22:52:42,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:42,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638713193] [2024-11-18 22:52:42,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:42,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 22:52:42,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:42,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638713193] [2024-11-18 22:52:42,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638713193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:52:42,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:52:42,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 22:52:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724102642] [2024-11-18 22:52:42,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:52:42,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:52:42,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:42,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:52:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:52:42,981 INFO L87 Difference]: Start difference. First operand 147 states and 190 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:43,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:43,839 INFO L93 Difference]: Finished difference Result 240 states and 304 transitions. [2024-11-18 22:52:43,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 22:52:43,840 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2024-11-18 22:52:43,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:43,842 INFO L225 Difference]: With dead ends: 240 [2024-11-18 22:52:43,842 INFO L226 Difference]: Without dead ends: 238 [2024-11-18 22:52:43,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2024-11-18 22:52:43,844 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 232 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:52:43,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 454 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:52:43,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-18 22:52:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 163. [2024-11-18 22:52:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.1692307692307693) internal successors, (152), 130 states have internal predecessors, (152), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-18 22:52:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 208 transitions. [2024-11-18 22:52:43,859 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 208 transitions. Word has length 63 [2024-11-18 22:52:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:43,860 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 208 transitions. [2024-11-18 22:52:43,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 208 transitions. [2024-11-18 22:52:43,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-18 22:52:43,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:43,861 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:43,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 22:52:43,862 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:43,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:43,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1196751867, now seen corresponding path program 1 times [2024-11-18 22:52:43,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:43,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237851798] [2024-11-18 22:52:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:43,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 22:52:44,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:44,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237851798] [2024-11-18 22:52:44,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237851798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:52:44,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:52:44,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 22:52:44,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226193390] [2024-11-18 22:52:44,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:52:44,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 22:52:44,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:44,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 22:52:44,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:52:44,326 INFO L87 Difference]: Start difference. First operand 163 states and 208 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:44,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:44,575 INFO L93 Difference]: Finished difference Result 172 states and 217 transitions. [2024-11-18 22:52:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 22:52:44,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2024-11-18 22:52:44,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:44,577 INFO L225 Difference]: With dead ends: 172 [2024-11-18 22:52:44,577 INFO L226 Difference]: Without dead ends: 170 [2024-11-18 22:52:44,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:52:44,578 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 45 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:52:44,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 429 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:52:44,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-18 22:52:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 163. [2024-11-18 22:52:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.1615384615384616) internal successors, (151), 130 states have internal predecessors, (151), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-18 22:52:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 207 transitions. [2024-11-18 22:52:44,593 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 207 transitions. Word has length 64 [2024-11-18 22:52:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:44,593 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 207 transitions. [2024-11-18 22:52:44,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:52:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 207 transitions. [2024-11-18 22:52:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-18 22:52:44,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:44,595 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:44,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 22:52:44,595 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:44,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2043906925, now seen corresponding path program 1 times [2024-11-18 22:52:44,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:44,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170446731] [2024-11-18 22:52:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:44,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-18 22:52:45,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:52:45,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170446731] [2024-11-18 22:52:45,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170446731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:52:45,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129381905] [2024-11-18 22:52:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:45,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:52:45,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:52:45,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:52:45,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 22:52:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:52:45,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 22:52:45,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:52:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 218 proven. 4 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-18 22:52:46,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:52:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-18 22:52:51,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129381905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:52:51,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:52:51,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 26 [2024-11-18 22:52:51,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456567505] [2024-11-18 22:52:51,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:52:51,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 22:52:51,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:52:51,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 22:52:51,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2024-11-18 22:52:51,310 INFO L87 Difference]: Start difference. First operand 163 states and 207 transitions. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 5 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 5 states have call predecessors, (42), 5 states have call successors, (42) [2024-11-18 22:52:58,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:52:58,488 INFO L93 Difference]: Finished difference Result 738 states and 918 transitions. [2024-11-18 22:52:58,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-18 22:52:58,489 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 5 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 5 states have call predecessors, (42), 5 states have call successors, (42) Word has length 118 [2024-11-18 22:52:58,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:52:58,492 INFO L225 Difference]: With dead ends: 738 [2024-11-18 22:52:58,492 INFO L226 Difference]: Without dead ends: 635 [2024-11-18 22:52:58,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1998 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1336, Invalid=4066, Unknown=0, NotChecked=0, Total=5402 [2024-11-18 22:52:58,495 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 1085 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:52:58,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 1178 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 22:52:58,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-11-18 22:52:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 399. [2024-11-18 22:52:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 310 states have (on average 1.1580645161290322) internal successors, (359), 310 states have internal predecessors, (359), 77 states have call successors, (77), 11 states have call predecessors, (77), 11 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-18 22:52:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 513 transitions. [2024-11-18 22:52:58,548 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 513 transitions. Word has length 118 [2024-11-18 22:52:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:52:58,548 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 513 transitions. [2024-11-18 22:52:58,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 5 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 5 states have call predecessors, (42), 5 states have call successors, (42) [2024-11-18 22:52:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 513 transitions. [2024-11-18 22:52:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-18 22:52:58,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:52:58,550 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:52:58,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 22:52:58,754 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,SelfDestructingSolverStorable11 [2024-11-18 22:52:58,755 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:52:58,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:52:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1382792067, now seen corresponding path program 1 times [2024-11-18 22:52:58,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:52:58,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722879122] [2024-11-18 22:52:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:52:58,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:52:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-18 22:53:00,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:53:00,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722879122] [2024-11-18 22:53:00,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722879122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:53:00,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14996848] [2024-11-18 22:53:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:00,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:53:00,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:53:00,147 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) [2024-11-18 22:53:00,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 22:53:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:00,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 22:53:00,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:53:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-18 22:53:00,923 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:53:00,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14996848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:53:00,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:53:00,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 15 [2024-11-18 22:53:00,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225504434] [2024-11-18 22:53:00,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:53:00,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:53:00,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:53:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:53:00,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-18 22:53:00,925 INFO L87 Difference]: Start difference. First operand 399 states and 513 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:53:01,091 INFO L93 Difference]: Finished difference Result 728 states and 935 transitions. [2024-11-18 22:53:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:53:01,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 119 [2024-11-18 22:53:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:53:01,095 INFO L225 Difference]: With dead ends: 728 [2024-11-18 22:53:01,095 INFO L226 Difference]: Without dead ends: 481 [2024-11-18 22:53:01,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-18 22:53:01,096 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 49 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:53:01,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 159 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:53:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-18 22:53:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 390. [2024-11-18 22:53:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 301 states have (on average 1.1561461794019934) internal successors, (348), 301 states have internal predecessors, (348), 77 states have call successors, (77), 11 states have call predecessors, (77), 11 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-18 22:53:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 502 transitions. [2024-11-18 22:53:01,136 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 502 transitions. Word has length 119 [2024-11-18 22:53:01,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:53:01,136 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 502 transitions. [2024-11-18 22:53:01,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:01,136 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 502 transitions. [2024-11-18 22:53:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 22:53:01,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:53:01,143 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:53:01,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 22:53:01,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:53:01,344 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:53:01,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:53:01,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1018602839, now seen corresponding path program 1 times [2024-11-18 22:53:01,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:53:01,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184363423] [2024-11-18 22:53:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:01,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:53:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:01,824 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-18 22:53:01,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:53:01,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184363423] [2024-11-18 22:53:01,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184363423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:53:01,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:53:01,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 22:53:01,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235670877] [2024-11-18 22:53:01,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:53:01,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 22:53:01,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:53:01,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 22:53:01,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:53:01,826 INFO L87 Difference]: Start difference. First operand 390 states and 502 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:53:01,965 INFO L93 Difference]: Finished difference Result 575 states and 733 transitions. [2024-11-18 22:53:01,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 22:53:01,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 120 [2024-11-18 22:53:01,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:53:01,968 INFO L225 Difference]: With dead ends: 575 [2024-11-18 22:53:01,968 INFO L226 Difference]: Without dead ends: 426 [2024-11-18 22:53:01,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:53:01,969 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 54 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:53:01,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 212 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:53:01,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-18 22:53:01,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 362. [2024-11-18 22:53:01,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 281 states have (on average 1.1423487544483986) internal successors, (321), 281 states have internal predecessors, (321), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 22:53:02,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 461 transitions. [2024-11-18 22:53:02,000 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 461 transitions. Word has length 120 [2024-11-18 22:53:02,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:53:02,001 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 461 transitions. [2024-11-18 22:53:02,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:02,001 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 461 transitions. [2024-11-18 22:53:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-18 22:53:02,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:53:02,002 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:53:02,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 22:53:02,002 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:53:02,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:53:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1192519635, now seen corresponding path program 1 times [2024-11-18 22:53:02,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:53:02,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353689174] [2024-11-18 22:53:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:02,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:53:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-18 22:53:03,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:53:03,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353689174] [2024-11-18 22:53:03,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353689174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:53:03,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899986563] [2024-11-18 22:53:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:03,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:53:03,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:53:03,818 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) [2024-11-18 22:53:03,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 22:53:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:03,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 22:53:03,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:53:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-18 22:53:04,670 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:53:04,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899986563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:53:04,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:53:04,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 14 [2024-11-18 22:53:04,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175865882] [2024-11-18 22:53:04,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:53:04,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 22:53:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:53:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 22:53:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:53:04,673 INFO L87 Difference]: Start difference. First operand 362 states and 461 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:53:04,808 INFO L93 Difference]: Finished difference Result 541 states and 683 transitions. [2024-11-18 22:53:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:53:04,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 121 [2024-11-18 22:53:04,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:53:04,811 INFO L225 Difference]: With dead ends: 541 [2024-11-18 22:53:04,811 INFO L226 Difference]: Without dead ends: 424 [2024-11-18 22:53:04,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-18 22:53:04,813 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 53 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:53:04,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 156 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:53:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-11-18 22:53:04,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 357. [2024-11-18 22:53:04,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 276 states have (on average 1.1340579710144927) internal successors, (313), 276 states have internal predecessors, (313), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 22:53:04,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 453 transitions. [2024-11-18 22:53:04,847 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 453 transitions. Word has length 121 [2024-11-18 22:53:04,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:53:04,848 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 453 transitions. [2024-11-18 22:53:04,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 453 transitions. [2024-11-18 22:53:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-18 22:53:04,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:53:04,850 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:53:04,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 22:53:05,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 22:53:05,051 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:53:05,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:53:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1028671250, now seen corresponding path program 1 times [2024-11-18 22:53:05,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:53:05,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75635674] [2024-11-18 22:53:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:05,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:53:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-18 22:53:05,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:53:05,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75635674] [2024-11-18 22:53:05,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75635674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:53:05,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:53:05,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:53:05,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298198372] [2024-11-18 22:53:05,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:53:05,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:53:05,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:53:05,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:53:05,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:53:05,648 INFO L87 Difference]: Start difference. First operand 357 states and 453 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:53:06,015 INFO L93 Difference]: Finished difference Result 532 states and 673 transitions. [2024-11-18 22:53:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:53:06,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 122 [2024-11-18 22:53:06,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:53:06,021 INFO L225 Difference]: With dead ends: 532 [2024-11-18 22:53:06,022 INFO L226 Difference]: Without dead ends: 530 [2024-11-18 22:53:06,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:53:06,023 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 79 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:53:06,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 479 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:53:06,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-18 22:53:06,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 399. [2024-11-18 22:53:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 318 states have (on average 1.1320754716981132) internal successors, (360), 318 states have internal predecessors, (360), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 22:53:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 500 transitions. [2024-11-18 22:53:06,067 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 500 transitions. Word has length 122 [2024-11-18 22:53:06,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:53:06,067 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 500 transitions. [2024-11-18 22:53:06,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 500 transitions. [2024-11-18 22:53:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-18 22:53:06,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:53:06,069 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:53:06,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 22:53:06,069 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:53:06,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:53:06,070 INFO L85 PathProgramCache]: Analyzing trace with hash -458937852, now seen corresponding path program 1 times [2024-11-18 22:53:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:53:06,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410351009] [2024-11-18 22:53:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:06,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:53:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-18 22:53:06,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:53:06,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410351009] [2024-11-18 22:53:06,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410351009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:53:06,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364362224] [2024-11-18 22:53:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:06,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:53:06,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:53:06,839 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) [2024-11-18 22:53:06,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 22:53:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:06,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 22:53:06,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:53:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 11 proven. 39 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-18 22:53:07,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:53:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-18 22:53:07,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364362224] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 22:53:07,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 22:53:07,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 11] total 22 [2024-11-18 22:53:07,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088858382] [2024-11-18 22:53:07,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:53:07,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 22:53:07,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:53:07,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 22:53:07,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-11-18 22:53:07,316 INFO L87 Difference]: Start difference. First operand 399 states and 500 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:53:07,607 INFO L93 Difference]: Finished difference Result 658 states and 817 transitions. [2024-11-18 22:53:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 22:53:07,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 122 [2024-11-18 22:53:07,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:53:07,611 INFO L225 Difference]: With dead ends: 658 [2024-11-18 22:53:07,611 INFO L226 Difference]: Without dead ends: 656 [2024-11-18 22:53:07,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-11-18 22:53:07,614 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 38 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:53:07,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 377 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:53:07,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-11-18 22:53:07,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 407. [2024-11-18 22:53:07,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 326 states have (on average 1.1319018404907975) internal successors, (369), 326 states have internal predecessors, (369), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 22:53:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 509 transitions. [2024-11-18 22:53:07,661 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 509 transitions. Word has length 122 [2024-11-18 22:53:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:53:07,661 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 509 transitions. [2024-11-18 22:53:07,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 509 transitions. [2024-11-18 22:53:07,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-18 22:53:07,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:53:07,663 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:53:07,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 22:53:07,864 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,SelfDestructingSolverStorable16 [2024-11-18 22:53:07,865 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:53:07,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:53:07,865 INFO L85 PathProgramCache]: Analyzing trace with hash -851964862, now seen corresponding path program 1 times [2024-11-18 22:53:07,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:53:07,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063431544] [2024-11-18 22:53:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:07,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:53:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-11-18 22:53:07,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:53:07,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063431544] [2024-11-18 22:53:07,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063431544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:53:07,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:53:07,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:53:07,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834911170] [2024-11-18 22:53:07,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:53:07,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:53:07,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:53:07,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:53:07,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:53:07,933 INFO L87 Difference]: Start difference. First operand 407 states and 509 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:53:07,992 INFO L93 Difference]: Finished difference Result 544 states and 682 transitions. [2024-11-18 22:53:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:53:07,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 122 [2024-11-18 22:53:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:53:07,995 INFO L225 Difference]: With dead ends: 544 [2024-11-18 22:53:07,995 INFO L226 Difference]: Without dead ends: 395 [2024-11-18 22:53:07,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:53:07,998 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:53:07,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:53:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-18 22:53:08,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2024-11-18 22:53:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 314 states have (on average 1.1210191082802548) internal successors, (352), 314 states have internal predecessors, (352), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 22:53:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 492 transitions. [2024-11-18 22:53:08,038 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 492 transitions. Word has length 122 [2024-11-18 22:53:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:53:08,038 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 492 transitions. [2024-11-18 22:53:08,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 492 transitions. [2024-11-18 22:53:08,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 22:53:08,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:53:08,040 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:53:08,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 22:53:08,040 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:53:08,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:53:08,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1998321160, now seen corresponding path program 1 times [2024-11-18 22:53:08,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:53:08,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749590623] [2024-11-18 22:53:08,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:08,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:53:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-18 22:53:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:53:09,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749590623] [2024-11-18 22:53:09,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749590623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:53:09,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007017174] [2024-11-18 22:53:09,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:09,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:53:09,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:53:09,726 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) [2024-11-18 22:53:09,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 22:53:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:09,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 22:53:09,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:53:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-18 22:53:10,046 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:53:10,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007017174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:53:10,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:53:10,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 24 [2024-11-18 22:53:10,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217948262] [2024-11-18 22:53:10,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:53:10,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:53:10,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:53:10,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:53:10,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-18 22:53:10,048 INFO L87 Difference]: Start difference. First operand 395 states and 492 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:53:10,305 INFO L93 Difference]: Finished difference Result 650 states and 816 transitions. [2024-11-18 22:53:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:53:10,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 123 [2024-11-18 22:53:10,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:53:10,310 INFO L225 Difference]: With dead ends: 650 [2024-11-18 22:53:10,310 INFO L226 Difference]: Without dead ends: 648 [2024-11-18 22:53:10,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-11-18 22:53:10,312 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 80 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:53:10,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 487 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:53:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-18 22:53:10,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 392. [2024-11-18 22:53:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 311 states have (on average 1.1189710610932475) internal successors, (348), 311 states have internal predecessors, (348), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 22:53:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 488 transitions. [2024-11-18 22:53:10,401 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 488 transitions. Word has length 123 [2024-11-18 22:53:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:53:10,401 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 488 transitions. [2024-11-18 22:53:10,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:10,402 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 488 transitions. [2024-11-18 22:53:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 22:53:10,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:53:10,403 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:53:10,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 22:53:10,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:53:10,605 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:53:10,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:53:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1297256582, now seen corresponding path program 1 times [2024-11-18 22:53:10,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:53:10,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604094254] [2024-11-18 22:53:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:53:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-18 22:53:11,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:53:11,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604094254] [2024-11-18 22:53:11,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604094254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:53:11,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087890842] [2024-11-18 22:53:11,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:11,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:53:11,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:53:11,761 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:53:11,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 22:53:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:11,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 22:53:11,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:53:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-18 22:53:13,507 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:53:13,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087890842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:53:13,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:53:13,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2024-11-18 22:53:13,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862663653] [2024-11-18 22:53:13,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:53:13,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:53:13,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:53:13,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:53:13,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-18 22:53:13,509 INFO L87 Difference]: Start difference. First operand 392 states and 488 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:53:13,870 INFO L93 Difference]: Finished difference Result 559 states and 689 transitions. [2024-11-18 22:53:13,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 22:53:13,871 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 123 [2024-11-18 22:53:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:53:13,873 INFO L225 Difference]: With dead ends: 559 [2024-11-18 22:53:13,873 INFO L226 Difference]: Without dead ends: 557 [2024-11-18 22:53:13,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-11-18 22:53:13,875 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 59 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:53:13,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 585 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:53:13,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-18 22:53:13,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 336. [2024-11-18 22:53:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 263 states have (on average 1.1102661596958174) internal successors, (292), 263 states have internal predecessors, (292), 63 states have call successors, (63), 9 states have call predecessors, (63), 9 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-18 22:53:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 418 transitions. [2024-11-18 22:53:13,914 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 418 transitions. Word has length 123 [2024-11-18 22:53:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:53:13,914 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 418 transitions. [2024-11-18 22:53:13,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 418 transitions. [2024-11-18 22:53:13,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 22:53:13,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:53:13,916 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:53:13,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 22:53:14,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:53:14,117 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:53:14,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:53:14,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1138777084, now seen corresponding path program 1 times [2024-11-18 22:53:14,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:53:14,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240281110] [2024-11-18 22:53:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:53:14,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:53:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:53:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-18 22:53:14,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:53:14,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240281110] [2024-11-18 22:53:14,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240281110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:53:14,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:53:14,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:53:14,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846220304] [2024-11-18 22:53:14,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:53:14,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:53:14,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:53:14,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:53:14,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:53:14,613 INFO L87 Difference]: Start difference. First operand 336 states and 418 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:53:15,165 INFO L93 Difference]: Finished difference Result 512 states and 645 transitions. [2024-11-18 22:53:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 22:53:15,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 124 [2024-11-18 22:53:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:53:15,167 INFO L225 Difference]: With dead ends: 512 [2024-11-18 22:53:15,167 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 22:53:15,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-11-18 22:53:15,169 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 102 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:53:15,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 409 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 22:53:15,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 22:53:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 22:53:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 22:53:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 22:53:15,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 124 [2024-11-18 22:53:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:53:15,171 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 22:53:15,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 22:53:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 22:53:15,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 22:53:15,174 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 22:53:15,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 22:53:15,177 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:53:15,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 22:53:32,666 WARN L286 SmtUtils]: Spent 15.97s on a formula simplification. DAG size of input: 323 DAG size of output: 120 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-18 22:53:35,251 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 22:53:35,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:53:35 BoogieIcfgContainer [2024-11-18 22:53:35,272 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 22:53:35,273 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 22:53:35,273 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 22:53:35,273 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 22:53:35,274 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:52:36" (3/4) ... [2024-11-18 22:53:35,277 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 22:53:35,281 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-18 22:53:35,287 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-18 22:53:35,288 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 22:53:35,288 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 22:53:35,288 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 22:53:35,375 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 22:53:35,375 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 22:53:35,375 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 22:53:35,376 INFO L158 Benchmark]: Toolchain (without parser) took 59532.25ms. Allocated memory was 182.5MB in the beginning and 799.0MB in the end (delta: 616.6MB). Free memory was 141.8MB in the beginning and 560.9MB in the end (delta: -419.2MB). Peak memory consumption was 198.1MB. Max. memory is 16.1GB. [2024-11-18 22:53:35,376 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 182.5MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 22:53:35,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.88ms. Allocated memory is still 182.5MB. Free memory was 141.6MB in the beginning and 140.2MB in the end (delta: 1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-18 22:53:35,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.54ms. Allocated memory is still 182.5MB. Free memory was 140.2MB in the beginning and 138.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 22:53:35,377 INFO L158 Benchmark]: Boogie Preprocessor took 54.66ms. Allocated memory is still 182.5MB. Free memory was 138.2MB in the beginning and 134.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 22:53:35,377 INFO L158 Benchmark]: RCFGBuilder took 510.07ms. Allocated memory is still 182.5MB. Free memory was 134.9MB in the beginning and 141.2MB in the end (delta: -6.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-18 22:53:35,377 INFO L158 Benchmark]: TraceAbstraction took 58406.86ms. Allocated memory was 182.5MB in the beginning and 799.0MB in the end (delta: 616.6MB). Free memory was 140.3MB in the beginning and 567.2MB in the end (delta: -426.9MB). Peak memory consumption was 473.6MB. Max. memory is 16.1GB. [2024-11-18 22:53:35,377 INFO L158 Benchmark]: Witness Printer took 102.64ms. Allocated memory is still 799.0MB. Free memory was 567.2MB in the beginning and 560.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-18 22:53:35,379 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 182.5MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.88ms. Allocated memory is still 182.5MB. Free memory was 141.6MB in the beginning and 140.2MB in the end (delta: 1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.54ms. Allocated memory is still 182.5MB. Free memory was 140.2MB in the beginning and 138.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.66ms. Allocated memory is still 182.5MB. Free memory was 138.2MB in the beginning and 134.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 510.07ms. Allocated memory is still 182.5MB. Free memory was 134.9MB in the beginning and 141.2MB in the end (delta: -6.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 58406.86ms. Allocated memory was 182.5MB in the beginning and 799.0MB in the end (delta: 616.6MB). Free memory was 140.3MB in the beginning and 567.2MB in the end (delta: -426.9MB). Peak memory consumption was 473.6MB. Max. memory is 16.1GB. * Witness Printer took 102.64ms. Allocated memory is still 799.0MB. Free memory was 567.2MB in the beginning and 560.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 38.3s, OverallIterations: 21, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2430 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2430 mSDsluCounter, 6435 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5042 mSDsCounter, 526 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3683 IncrementalHoareTripleChecker+Invalid, 4209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 526 mSolverCounterUnsat, 1393 mSDtfsCounter, 3683 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1328 GetRequests, 1051 SyntacticMatches, 4 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2646 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=407occurred in iteration=17, InterpolantAutomatonStates: 197, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 21 MinimizatonAttempts, 1767 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 2660 NumberOfCodeBlocks, 2660 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2870 ConstructedInterpolants, 0 QuantifiedInterpolants, 18418 SizeOfPredicates, 42 NumberOfNonLiveVariables, 1760 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 30 InterpolantComputations, 20 PerfectInterpolantSequences, 7872/8072 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: (((var_1_11 != var_1_5) || (var_1_1 != 0)) || ((((long long) 65520 + var_1_11) % 65536) != 0)) - ProcedureContractResult [Line: 20]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: ((var_1_1 != 0) || (((var_1_11 != var_1_5) || ((((long long) 65520 + var_1_11) % 65536) != 0)) && ((last_1_var_1_11 != last_1_var_1_5) || ((((long long) 65520 + last_1_var_1_11) % 65536) != 0)))) Ensures: (((var_1_1 != 0) || (((var_1_11 != var_1_5) || ((((long long) 65520 + var_1_11) % 65536) != 0)) && ((last_1_var_1_11 != last_1_var_1_5) || ((((long long) 65520 + last_1_var_1_11) % 65536) != 0)))) && ((((((((((((isInitial == \old(isInitial)) && (var_1_1 == \old(var_1_1))) && (var_1_4 == \old(var_1_4))) && (var_1_5 == \old(var_1_5))) && (var_1_6 == \old(var_1_6))) && (var_1_7 == \old(var_1_7))) && (var_1_8 == \old(var_1_8))) && (var_1_9 == \old(var_1_9))) && (var_1_10 == \old(var_1_10))) && (var_1_11 == \old(var_1_11))) && (last_1_var_1_5 == \old(last_1_var_1_5))) && (last_1_var_1_11 == \old(last_1_var_1_11)))) RESULT: Ultimate proved your program to be correct! [2024-11-18 22:53:35,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE