./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c --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/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52f795f47ad9dd0b1b0499f649b5f623fed211e53433ed6d87534c63dbfae98b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:43:10,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:43:10,242 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:43:10,245 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:43:10,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:43:10,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:43:10,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:43:10,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:43:10,272 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:43:10,272 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:43:10,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:43:10,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:43:10,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:43:10,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:43:10,275 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:43:10,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:43:10,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:43:10,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:43:10,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:43:10,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:43:10,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:43:10,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:43:10,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:43:10,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:43:10,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:43:10,280 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:43:10,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:43:10,281 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:43:10,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:43:10,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:43:10,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:43:10,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:43:10,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:43:10,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:43:10,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:43:10,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:43:10,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:43:10,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:43:10,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:43:10,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:43:10,284 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:43:10,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:43:10,285 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52f795f47ad9dd0b1b0499f649b5f623fed211e53433ed6d87534c63dbfae98b [2024-11-18 14:43:10,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:43:10,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:43:10,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:43:10,509 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:43:10,509 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:43:10,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c [2024-11-18 14:43:11,762 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:43:11,915 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:43:11,915 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c [2024-11-18 14:43:11,925 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce2fae896/e2631eae82af4de9a61c82c5eb0629ef/FLAG922a66855 [2024-11-18 14:43:11,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce2fae896/e2631eae82af4de9a61c82c5eb0629ef [2024-11-18 14:43:11,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:43:11,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:43:11,943 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:43:11,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:43:11,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:43:11,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:43:11" (1/1) ... [2024-11-18 14:43:11,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d58fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:11, skipping insertion in model container [2024-11-18 14:43:11,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:43:11" (1/1) ... [2024-11-18 14:43:11,974 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:43:12,140 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/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c[8305,8318] [2024-11-18 14:43:12,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:43:12,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:43:12,183 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/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c[8305,8318] [2024-11-18 14:43:12,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:43:12,197 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:43:12,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12 WrapperNode [2024-11-18 14:43:12,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:43:12,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:43:12,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:43:12,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:43:12,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,240 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2024-11-18 14:43:12,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:43:12,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:43:12,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:43:12,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:43:12,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,268 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 14:43:12,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:43:12,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:43:12,292 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:43:12,292 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:43:12,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (1/1) ... [2024-11-18 14:43:12,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:43:12,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:43:12,320 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 14:43:12,322 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 14:43:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:43:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:43:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:43:12,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:43:12,429 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:43:12,432 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:43:12,814 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-18 14:43:12,814 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:43:12,827 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:43:12,828 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:43:12,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:43:12 BoogieIcfgContainer [2024-11-18 14:43:12,828 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:43:12,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:43:12,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:43:12,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:43:12,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:43:11" (1/3) ... [2024-11-18 14:43:12,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1927e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:43:12, skipping insertion in model container [2024-11-18 14:43:12,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:43:12" (2/3) ... [2024-11-18 14:43:12,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1927e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:43:12, skipping insertion in model container [2024-11-18 14:43:12,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:43:12" (3/3) ... [2024-11-18 14:43:12,837 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c [2024-11-18 14:43:12,854 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:43:12,854 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:43:12,911 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:43:12,917 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;@766d01e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:43:12,919 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:43:12,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 69 states have (on average 1.7246376811594204) internal successors, (119), 70 states have internal predecessors, (119), 0 states have call successors, (0), 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 14:43:12,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 14:43:12,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:12,930 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:12,931 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:12,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:12,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2021273361, now seen corresponding path program 1 times [2024-11-18 14:43:12,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:12,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529930828] [2024-11-18 14:43:12,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:12,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:13,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:13,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529930828] [2024-11-18 14:43:13,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529930828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:13,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:13,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 14:43:13,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736694162] [2024-11-18 14:43:13,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:13,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:43:13,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:43:13,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:43:13,164 INFO L87 Difference]: Start difference. First operand has 71 states, 69 states have (on average 1.7246376811594204) internal successors, (119), 70 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 14:43:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:13,182 INFO L93 Difference]: Finished difference Result 110 states and 183 transitions. [2024-11-18 14:43:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:43:13,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-18 14:43:13,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:13,191 INFO L225 Difference]: With dead ends: 110 [2024-11-18 14:43:13,192 INFO L226 Difference]: Without dead ends: 67 [2024-11-18 14:43:13,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:43:13,198 INFO L432 NwaCegarLoop]: 112 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, 112 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 14:43:13,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-18 14:43:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-18 14:43:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.696969696969697) internal successors, (112), 66 states have internal predecessors, (112), 0 states have call successors, (0), 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 14:43:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 112 transitions. [2024-11-18 14:43:13,224 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 112 transitions. Word has length 21 [2024-11-18 14:43:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:13,225 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 112 transitions. [2024-11-18 14:43:13,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 14:43:13,225 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 112 transitions. [2024-11-18 14:43:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 14:43:13,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:13,226 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:13,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:43:13,226 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:13,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:13,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1000205007, now seen corresponding path program 1 times [2024-11-18 14:43:13,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:13,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248559523] [2024-11-18 14:43:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:13,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:13,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248559523] [2024-11-18 14:43:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248559523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:13,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:13,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:43:13,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422275244] [2024-11-18 14:43:13,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:13,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:43:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:43:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:43:13,426 INFO L87 Difference]: Start difference. First operand 67 states and 112 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 14:43:13,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:13,483 INFO L93 Difference]: Finished difference Result 109 states and 176 transitions. [2024-11-18 14:43:13,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:43:13,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-18 14:43:13,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:13,484 INFO L225 Difference]: With dead ends: 109 [2024-11-18 14:43:13,484 INFO L226 Difference]: Without dead ends: 67 [2024-11-18 14:43:13,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:43:13,485 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:13,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-18 14:43:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-18 14:43:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 0 states have call successors, (0), 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 14:43:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2024-11-18 14:43:13,494 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 21 [2024-11-18 14:43:13,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:13,495 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2024-11-18 14:43:13,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 14:43:13,495 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2024-11-18 14:43:13,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 14:43:13,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:13,496 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:13,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:43:13,497 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:13,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:13,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1621611306, now seen corresponding path program 1 times [2024-11-18 14:43:13,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:13,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934823820] [2024-11-18 14:43:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:13,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:13,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:13,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934823820] [2024-11-18 14:43:13,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934823820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:13,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:13,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:43:13,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920206672] [2024-11-18 14:43:13,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:13,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:43:13,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:13,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:43:13,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:43:13,650 INFO L87 Difference]: Start difference. First operand 67 states and 89 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 14:43:13,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:13,816 INFO L93 Difference]: Finished difference Result 371 states and 569 transitions. [2024-11-18 14:43:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:43:13,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-18 14:43:13,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:13,819 INFO L225 Difference]: With dead ends: 371 [2024-11-18 14:43:13,819 INFO L226 Difference]: Without dead ends: 333 [2024-11-18 14:43:13,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:43:13,821 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 576 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:13,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 656 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:43:13,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-18 14:43:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 103. [2024-11-18 14:43:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4313725490196079) internal successors, (146), 102 states have internal predecessors, (146), 0 states have call successors, (0), 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 14:43:13,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 146 transitions. [2024-11-18 14:43:13,835 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 146 transitions. Word has length 43 [2024-11-18 14:43:13,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:13,835 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 146 transitions. [2024-11-18 14:43:13,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 14:43:13,835 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 146 transitions. [2024-11-18 14:43:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 14:43:13,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:13,836 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:13,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:43:13,837 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:13,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:13,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2120362406, now seen corresponding path program 1 times [2024-11-18 14:43:13,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:13,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950561952] [2024-11-18 14:43:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:13,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:13,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:13,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950561952] [2024-11-18 14:43:13,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950561952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:13,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:13,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:43:13,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776293606] [2024-11-18 14:43:13,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:13,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:43:13,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:13,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:43:13,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:43:13,923 INFO L87 Difference]: Start difference. First operand 103 states and 146 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 14:43:13,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:13,947 INFO L93 Difference]: Finished difference Result 240 states and 361 transitions. [2024-11-18 14:43:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:43:13,948 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-18 14:43:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:13,949 INFO L225 Difference]: With dead ends: 240 [2024-11-18 14:43:13,949 INFO L226 Difference]: Without dead ends: 166 [2024-11-18 14:43:13,949 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 14:43:13,950 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 37 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:13,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 138 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:13,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-18 14:43:13,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2024-11-18 14:43:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.4658385093167703) internal successors, (236), 161 states have internal predecessors, (236), 0 states have call successors, (0), 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 14:43:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 236 transitions. [2024-11-18 14:43:13,967 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 236 transitions. Word has length 45 [2024-11-18 14:43:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:13,967 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 236 transitions. [2024-11-18 14:43:13,967 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), 0 states have call successors, (0), 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 14:43:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 236 transitions. [2024-11-18 14:43:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 14:43:13,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:13,968 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:13,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:43:13,969 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:13,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:13,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2053868894, now seen corresponding path program 1 times [2024-11-18 14:43:13,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:13,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336853783] [2024-11-18 14:43:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:13,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:14,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:14,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336853783] [2024-11-18 14:43:14,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336853783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:14,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:14,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:43:14,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495944959] [2024-11-18 14:43:14,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:14,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:43:14,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:14,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:43:14,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:43:14,284 INFO L87 Difference]: Start difference. First operand 162 states and 236 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 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 14:43:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:14,385 INFO L93 Difference]: Finished difference Result 297 states and 444 transitions. [2024-11-18 14:43:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:43:14,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-18 14:43:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:14,387 INFO L225 Difference]: With dead ends: 297 [2024-11-18 14:43:14,387 INFO L226 Difference]: Without dead ends: 164 [2024-11-18 14:43:14,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:43:14,390 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 180 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:14,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 251 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:14,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-18 14:43:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2024-11-18 14:43:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.453416149068323) internal successors, (234), 161 states have internal predecessors, (234), 0 states have call successors, (0), 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 14:43:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 234 transitions. [2024-11-18 14:43:14,405 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 234 transitions. Word has length 45 [2024-11-18 14:43:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:14,406 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 234 transitions. [2024-11-18 14:43:14,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 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 14:43:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 234 transitions. [2024-11-18 14:43:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 14:43:14,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:14,407 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:14,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:43:14,407 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:14,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash 339850577, now seen corresponding path program 1 times [2024-11-18 14:43:14,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:14,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418575714] [2024-11-18 14:43:14,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:14,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:14,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:14,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418575714] [2024-11-18 14:43:14,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418575714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:14,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:14,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:43:14,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887437860] [2024-11-18 14:43:14,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:14,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:43:14,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:14,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:43:14,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:43:14,622 INFO L87 Difference]: Start difference. First operand 162 states and 234 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 14:43:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:14,655 INFO L93 Difference]: Finished difference Result 170 states and 243 transitions. [2024-11-18 14:43:14,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:43:14,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-18 14:43:14,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:14,657 INFO L225 Difference]: With dead ends: 170 [2024-11-18 14:43:14,658 INFO L226 Difference]: Without dead ends: 168 [2024-11-18 14:43:14,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:43:14,659 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:14,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 568 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:14,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-18 14:43:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-18 14:43:14,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.4311377245508983) internal successors, (239), 167 states have internal predecessors, (239), 0 states have call successors, (0), 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 14:43:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 239 transitions. [2024-11-18 14:43:14,669 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 239 transitions. Word has length 46 [2024-11-18 14:43:14,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:14,669 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 239 transitions. [2024-11-18 14:43:14,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 14:43:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 239 transitions. [2024-11-18 14:43:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 14:43:14,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:14,670 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:14,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:43:14,671 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:14,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:14,671 INFO L85 PathProgramCache]: Analyzing trace with hash -473969054, now seen corresponding path program 1 times [2024-11-18 14:43:14,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:14,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855461079] [2024-11-18 14:43:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:14,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:14,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:14,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855461079] [2024-11-18 14:43:14,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855461079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:14,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:14,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:43:14,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912438614] [2024-11-18 14:43:14,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:14,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:43:14,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:14,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:43:14,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:43:14,730 INFO L87 Difference]: Start difference. First operand 168 states and 239 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 14:43:14,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:14,743 INFO L93 Difference]: Finished difference Result 430 states and 631 transitions. [2024-11-18 14:43:14,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:43:14,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-18 14:43:14,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:14,745 INFO L225 Difference]: With dead ends: 430 [2024-11-18 14:43:14,745 INFO L226 Difference]: Without dead ends: 291 [2024-11-18 14:43:14,746 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 14:43:14,747 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 48 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:14,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 191 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-18 14:43:14,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2024-11-18 14:43:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.4444444444444444) internal successors, (416), 288 states have internal predecessors, (416), 0 states have call successors, (0), 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 14:43:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 416 transitions. [2024-11-18 14:43:14,758 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 416 transitions. Word has length 47 [2024-11-18 14:43:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:14,758 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 416 transitions. [2024-11-18 14:43:14,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 14:43:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 416 transitions. [2024-11-18 14:43:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 14:43:14,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:14,763 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:14,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:43:14,764 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:14,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:14,764 INFO L85 PathProgramCache]: Analyzing trace with hash -908504990, now seen corresponding path program 1 times [2024-11-18 14:43:14,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:14,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040538095] [2024-11-18 14:43:14,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:14,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:14,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:14,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040538095] [2024-11-18 14:43:14,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040538095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:14,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:14,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:43:14,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453270466] [2024-11-18 14:43:14,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:14,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:43:14,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:14,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:43:14,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:43:14,807 INFO L87 Difference]: Start difference. First operand 289 states and 416 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 14:43:14,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:14,821 INFO L93 Difference]: Finished difference Result 777 states and 1134 transitions. [2024-11-18 14:43:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:43:14,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-18 14:43:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:14,823 INFO L225 Difference]: With dead ends: 777 [2024-11-18 14:43:14,823 INFO L226 Difference]: Without dead ends: 517 [2024-11-18 14:43:14,823 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 14:43:14,824 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 44 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:14,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 187 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-18 14:43:14,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 515. [2024-11-18 14:43:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.4357976653696498) internal successors, (738), 514 states have internal predecessors, (738), 0 states have call successors, (0), 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 14:43:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 738 transitions. [2024-11-18 14:43:14,838 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 738 transitions. Word has length 47 [2024-11-18 14:43:14,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:14,838 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 738 transitions. [2024-11-18 14:43:14,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 14:43:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 738 transitions. [2024-11-18 14:43:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 14:43:14,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:14,839 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:14,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:43:14,839 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:14,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:14,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1605529442, now seen corresponding path program 1 times [2024-11-18 14:43:14,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:14,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993797397] [2024-11-18 14:43:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:14,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:14,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:14,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993797397] [2024-11-18 14:43:14,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993797397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:14,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:14,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:43:14,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280088000] [2024-11-18 14:43:14,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:14,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:43:14,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:14,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:43:14,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:43:14,889 INFO L87 Difference]: Start difference. First operand 515 states and 738 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 14:43:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:14,911 INFO L93 Difference]: Finished difference Result 1423 states and 2044 transitions. [2024-11-18 14:43:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:43:14,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-18 14:43:14,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:14,918 INFO L225 Difference]: With dead ends: 1423 [2024-11-18 14:43:14,918 INFO L226 Difference]: Without dead ends: 937 [2024-11-18 14:43:14,919 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 14:43:14,920 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 46 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:14,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 193 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:14,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2024-11-18 14:43:14,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 935. [2024-11-18 14:43:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 1.411134903640257) internal successors, (1318), 934 states have internal predecessors, (1318), 0 states have call successors, (0), 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 14:43:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1318 transitions. [2024-11-18 14:43:14,945 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1318 transitions. Word has length 47 [2024-11-18 14:43:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:14,946 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1318 transitions. [2024-11-18 14:43:14,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 14:43:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1318 transitions. [2024-11-18 14:43:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-18 14:43:14,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:14,947 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:14,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:43:14,947 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:14,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1111100995, now seen corresponding path program 1 times [2024-11-18 14:43:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:14,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370721914] [2024-11-18 14:43:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:14,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:14,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:14,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370721914] [2024-11-18 14:43:14,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370721914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:14,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:14,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:43:14,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967676137] [2024-11-18 14:43:14,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:14,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:43:14,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:14,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:43:14,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:43:14,996 INFO L87 Difference]: Start difference. First operand 935 states and 1318 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 14:43:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:15,028 INFO L93 Difference]: Finished difference Result 1902 states and 2716 transitions. [2024-11-18 14:43:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:43:15,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-18 14:43:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:15,032 INFO L225 Difference]: With dead ends: 1902 [2024-11-18 14:43:15,032 INFO L226 Difference]: Without dead ends: 1371 [2024-11-18 14:43:15,033 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 14:43:15,034 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 47 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:15,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:15,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2024-11-18 14:43:15,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1369. [2024-11-18 14:43:15,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1368 states have (on average 1.4035087719298245) internal successors, (1920), 1368 states have internal predecessors, (1920), 0 states have call successors, (0), 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 14:43:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1920 transitions. [2024-11-18 14:43:15,065 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1920 transitions. Word has length 49 [2024-11-18 14:43:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:15,065 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1920 transitions. [2024-11-18 14:43:15,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 14:43:15,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1920 transitions. [2024-11-18 14:43:15,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-18 14:43:15,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:15,067 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:15,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:43:15,067 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:15,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:15,067 INFO L85 PathProgramCache]: Analyzing trace with hash -870105748, now seen corresponding path program 1 times [2024-11-18 14:43:15,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:15,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530110495] [2024-11-18 14:43:15,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:15,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:43:15,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:15,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530110495] [2024-11-18 14:43:15,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530110495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:15,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:15,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:43:15,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564117490] [2024-11-18 14:43:15,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:15,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:43:15,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:43:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:43:15,175 INFO L87 Difference]: Start difference. First operand 1369 states and 1920 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 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 14:43:15,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:15,296 INFO L93 Difference]: Finished difference Result 7019 states and 9877 transitions. [2024-11-18 14:43:15,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:43:15,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-18 14:43:15,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:15,313 INFO L225 Difference]: With dead ends: 7019 [2024-11-18 14:43:15,313 INFO L226 Difference]: Without dead ends: 5681 [2024-11-18 14:43:15,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:43:15,316 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 391 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:15,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 434 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:15,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2024-11-18 14:43:15,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 2705. [2024-11-18 14:43:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2704 states have (on average 1.3994082840236686) internal successors, (3784), 2704 states have internal predecessors, (3784), 0 states have call successors, (0), 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 14:43:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3784 transitions. [2024-11-18 14:43:15,395 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3784 transitions. Word has length 64 [2024-11-18 14:43:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:15,396 INFO L471 AbstractCegarLoop]: Abstraction has 2705 states and 3784 transitions. [2024-11-18 14:43:15,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 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 14:43:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3784 transitions. [2024-11-18 14:43:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-18 14:43:15,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:15,397 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:15,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:43:15,397 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:15,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:15,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1304641684, now seen corresponding path program 1 times [2024-11-18 14:43:15,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:15,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173338287] [2024-11-18 14:43:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:15,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:43:15,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:15,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173338287] [2024-11-18 14:43:15,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173338287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:15,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:15,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:43:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872219124] [2024-11-18 14:43:15,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:15,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:43:15,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:43:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:43:15,493 INFO L87 Difference]: Start difference. First operand 2705 states and 3784 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 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 14:43:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:15,647 INFO L93 Difference]: Finished difference Result 8355 states and 11741 transitions. [2024-11-18 14:43:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:43:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-18 14:43:15,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:15,664 INFO L225 Difference]: With dead ends: 8355 [2024-11-18 14:43:15,665 INFO L226 Difference]: Without dead ends: 7017 [2024-11-18 14:43:15,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:43:15,668 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 383 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:15,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 431 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:43:15,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7017 states. [2024-11-18 14:43:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7017 to 4713. [2024-11-18 14:43:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 4712 states have (on average 1.3921901528013583) internal successors, (6560), 4712 states have internal predecessors, (6560), 0 states have call successors, (0), 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 14:43:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 6560 transitions. [2024-11-18 14:43:15,812 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 6560 transitions. Word has length 64 [2024-11-18 14:43:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:15,812 INFO L471 AbstractCegarLoop]: Abstraction has 4713 states and 6560 transitions. [2024-11-18 14:43:15,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 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 14:43:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 6560 transitions. [2024-11-18 14:43:15,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-18 14:43:15,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:15,814 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:15,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:43:15,814 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:15,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1209392748, now seen corresponding path program 1 times [2024-11-18 14:43:15,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:15,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225780889] [2024-11-18 14:43:15,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:15,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:43:15,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:15,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225780889] [2024-11-18 14:43:15,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225780889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:15,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:15,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:43:15,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734839415] [2024-11-18 14:43:15,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:15,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:43:15,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:15,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:43:15,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:43:15,926 INFO L87 Difference]: Start difference. First operand 4713 states and 6560 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 14:43:16,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:16,101 INFO L93 Difference]: Finished difference Result 9691 states and 13605 transitions. [2024-11-18 14:43:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:43:16,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-18 14:43:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:16,129 INFO L225 Difference]: With dead ends: 9691 [2024-11-18 14:43:16,129 INFO L226 Difference]: Without dead ends: 8353 [2024-11-18 14:43:16,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:43:16,134 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 350 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:16,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 483 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:43:16,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8353 states. [2024-11-18 14:43:16,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8353 to 6049. [2024-11-18 14:43:16,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6049 states, 6048 states have (on average 1.3928571428571428) internal successors, (8424), 6048 states have internal predecessors, (8424), 0 states have call successors, (0), 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 14:43:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6049 states to 6049 states and 8424 transitions. [2024-11-18 14:43:16,316 INFO L78 Accepts]: Start accepts. Automaton has 6049 states and 8424 transitions. Word has length 64 [2024-11-18 14:43:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:16,316 INFO L471 AbstractCegarLoop]: Abstraction has 6049 states and 8424 transitions. [2024-11-18 14:43:16,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 14:43:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6049 states and 8424 transitions. [2024-11-18 14:43:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 14:43:16,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:16,317 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:16,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:43:16,317 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:16,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash 453625415, now seen corresponding path program 1 times [2024-11-18 14:43:16,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:16,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267534712] [2024-11-18 14:43:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:16,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 14:43:16,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:16,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267534712] [2024-11-18 14:43:16,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267534712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:16,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:16,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:43:16,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563022202] [2024-11-18 14:43:16,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:16,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:43:16,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:43:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:43:16,408 INFO L87 Difference]: Start difference. First operand 6049 states and 8424 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 14:43:16,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:16,597 INFO L93 Difference]: Finished difference Result 10275 states and 14445 transitions. [2024-11-18 14:43:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:43:16,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-18 14:43:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:16,611 INFO L225 Difference]: With dead ends: 10275 [2024-11-18 14:43:16,611 INFO L226 Difference]: Without dead ends: 9313 [2024-11-18 14:43:16,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:43:16,614 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 382 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:16,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 500 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:43:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2024-11-18 14:43:16,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 7009. [2024-11-18 14:43:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 7008 states have (on average 1.3961187214611872) internal successors, (9784), 7008 states have internal predecessors, (9784), 0 states have call successors, (0), 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 14:43:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 9784 transitions. [2024-11-18 14:43:16,757 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 9784 transitions. Word has length 66 [2024-11-18 14:43:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:16,758 INFO L471 AbstractCegarLoop]: Abstraction has 7009 states and 9784 transitions. [2024-11-18 14:43:16,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 14:43:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 9784 transitions. [2024-11-18 14:43:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 14:43:16,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:16,761 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:16,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:43:16,761 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:16,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:16,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2206620, now seen corresponding path program 1 times [2024-11-18 14:43:16,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:16,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622983999] [2024-11-18 14:43:16,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:16,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:16,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:16,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622983999] [2024-11-18 14:43:16,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622983999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:16,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:16,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:43:16,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822645299] [2024-11-18 14:43:16,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:16,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:43:16,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:16,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:43:16,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:43:16,848 INFO L87 Difference]: Start difference. First operand 7009 states and 9784 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 14:43:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:16,920 INFO L93 Difference]: Finished difference Result 12311 states and 17285 transitions. [2024-11-18 14:43:16,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:43:16,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-18 14:43:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:16,927 INFO L225 Difference]: With dead ends: 12311 [2024-11-18 14:43:16,927 INFO L226 Difference]: Without dead ends: 5333 [2024-11-18 14:43:16,934 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 14:43:16,934 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 42 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:16,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 195 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:16,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5333 states. [2024-11-18 14:43:17,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5333 to 5331. [2024-11-18 14:43:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5331 states, 5330 states have (on average 1.3962476547842402) internal successors, (7442), 5330 states have internal predecessors, (7442), 0 states have call successors, (0), 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 14:43:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 7442 transitions. [2024-11-18 14:43:17,080 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 7442 transitions. Word has length 66 [2024-11-18 14:43:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:17,080 INFO L471 AbstractCegarLoop]: Abstraction has 5331 states and 7442 transitions. [2024-11-18 14:43:17,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 14:43:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 7442 transitions. [2024-11-18 14:43:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 14:43:17,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:17,081 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:17,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:43:17,082 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:17,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:17,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1317089731, now seen corresponding path program 1 times [2024-11-18 14:43:17,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:17,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266489274] [2024-11-18 14:43:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:17,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:17,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:17,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266489274] [2024-11-18 14:43:17,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266489274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:17,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:17,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:43:17,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110807261] [2024-11-18 14:43:17,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:17,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:43:17,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:17,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:43:17,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:43:17,168 INFO L87 Difference]: Start difference. First operand 5331 states and 7442 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 14:43:17,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:17,229 INFO L93 Difference]: Finished difference Result 7975 states and 11140 transitions. [2024-11-18 14:43:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:43:17,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-18 14:43:17,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:17,234 INFO L225 Difference]: With dead ends: 7975 [2024-11-18 14:43:17,234 INFO L226 Difference]: Without dead ends: 2693 [2024-11-18 14:43:17,239 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 14:43:17,239 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 37 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:17,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 180 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:17,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2024-11-18 14:43:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2691. [2024-11-18 14:43:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 2690 states have (on average 1.3762081784386617) internal successors, (3702), 2690 states have internal predecessors, (3702), 0 states have call successors, (0), 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 14:43:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 3702 transitions. [2024-11-18 14:43:17,315 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 3702 transitions. Word has length 67 [2024-11-18 14:43:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:17,315 INFO L471 AbstractCegarLoop]: Abstraction has 2691 states and 3702 transitions. [2024-11-18 14:43:17,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 14:43:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 3702 transitions. [2024-11-18 14:43:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 14:43:17,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:17,316 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:17,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:43:17,317 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:17,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:17,317 INFO L85 PathProgramCache]: Analyzing trace with hash 486786415, now seen corresponding path program 1 times [2024-11-18 14:43:17,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:17,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899669370] [2024-11-18 14:43:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:17,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:17,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:17,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899669370] [2024-11-18 14:43:17,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899669370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:17,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:17,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:43:17,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736252991] [2024-11-18 14:43:17,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:17,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:43:17,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:43:17,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:43:17,401 INFO L87 Difference]: Start difference. First operand 2691 states and 3702 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 14:43:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:17,427 INFO L93 Difference]: Finished difference Result 4015 states and 5530 transitions. [2024-11-18 14:43:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:43:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-18 14:43:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:17,430 INFO L225 Difference]: With dead ends: 4015 [2024-11-18 14:43:17,430 INFO L226 Difference]: Without dead ends: 1373 [2024-11-18 14:43:17,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:43:17,432 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 34 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:17,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 165 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:17,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2024-11-18 14:43:17,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1371. [2024-11-18 14:43:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 1.3532846715328468) internal successors, (1854), 1370 states have internal predecessors, (1854), 0 states have call successors, (0), 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 14:43:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1854 transitions. [2024-11-18 14:43:17,456 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1854 transitions. Word has length 69 [2024-11-18 14:43:17,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:17,457 INFO L471 AbstractCegarLoop]: Abstraction has 1371 states and 1854 transitions. [2024-11-18 14:43:17,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 14:43:17,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1854 transitions. [2024-11-18 14:43:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 14:43:17,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:17,458 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:17,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:43:17,458 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:17,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:17,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2100202719, now seen corresponding path program 1 times [2024-11-18 14:43:17,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:17,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683965687] [2024-11-18 14:43:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:17,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:17,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:17,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683965687] [2024-11-18 14:43:17,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683965687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:43:17,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:43:17,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:43:17,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085776672] [2024-11-18 14:43:17,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:43:17,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:43:17,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:17,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:43:17,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:43:17,531 INFO L87 Difference]: Start difference. First operand 1371 states and 1854 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:43:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:17,545 INFO L93 Difference]: Finished difference Result 2035 states and 2758 transitions. [2024-11-18 14:43:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:43:17,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-18 14:43:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:17,547 INFO L225 Difference]: With dead ends: 2035 [2024-11-18 14:43:17,547 INFO L226 Difference]: Without dead ends: 713 [2024-11-18 14:43:17,548 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 14:43:17,548 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 31 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:17,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 150 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:43:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-18 14:43:17,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 711. [2024-11-18 14:43:17,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 1.3253521126760563) internal successors, (941), 710 states have internal predecessors, (941), 0 states have call successors, (0), 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 14:43:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 941 transitions. [2024-11-18 14:43:17,561 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 941 transitions. Word has length 71 [2024-11-18 14:43:17,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:17,561 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 941 transitions. [2024-11-18 14:43:17,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:43:17,562 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 941 transitions. [2024-11-18 14:43:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 14:43:17,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:17,562 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:17,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:43:17,562 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:17,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:17,563 INFO L85 PathProgramCache]: Analyzing trace with hash 952563539, now seen corresponding path program 1 times [2024-11-18 14:43:17,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:17,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12354384] [2024-11-18 14:43:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:17,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:19,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12354384] [2024-11-18 14:43:19,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12354384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:43:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382544161] [2024-11-18 14:43:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:43:19,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:43:19,213 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 14:43:19,215 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 14:43:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:19,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 14:43:19,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:43:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:19,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:43:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:20,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382544161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:43:20,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:43:20,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-18 14:43:20,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134946587] [2024-11-18 14:43:20,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:43:20,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 14:43:20,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:20,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 14:43:20,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:43:20,756 INFO L87 Difference]: Start difference. First operand 711 states and 941 transitions. Second operand has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 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 14:43:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:21,843 INFO L93 Difference]: Finished difference Result 3607 states and 4842 transitions. [2024-11-18 14:43:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 14:43:21,844 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-18 14:43:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:21,848 INFO L225 Difference]: With dead ends: 3607 [2024-11-18 14:43:21,848 INFO L226 Difference]: Without dead ends: 2945 [2024-11-18 14:43:21,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=582, Invalid=2388, Unknown=0, NotChecked=0, Total=2970 [2024-11-18 14:43:21,850 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 1809 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:21,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 756 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:43:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2024-11-18 14:43:21,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2911. [2024-11-18 14:43:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2910 states have (on average 1.3326460481099656) internal successors, (3878), 2910 states have internal predecessors, (3878), 0 states have call successors, (0), 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 14:43:21,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 3878 transitions. [2024-11-18 14:43:21,900 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 3878 transitions. Word has length 73 [2024-11-18 14:43:21,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:21,900 INFO L471 AbstractCegarLoop]: Abstraction has 2911 states and 3878 transitions. [2024-11-18 14:43:21,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 27 states have internal predecessors, (186), 0 states have call successors, (0), 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 14:43:21,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 3878 transitions. [2024-11-18 14:43:21,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 14:43:21,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:21,901 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:21,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 14:43:22,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:43:22,103 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:22,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:22,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1863570277, now seen corresponding path program 1 times [2024-11-18 14:43:22,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:22,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164418111] [2024-11-18 14:43:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:22,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:22,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:22,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164418111] [2024-11-18 14:43:22,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164418111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:43:22,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116568875] [2024-11-18 14:43:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:22,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:43:22,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:43:22,400 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 14:43:22,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:43:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:22,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 14:43:22,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:43:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:22,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:43:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:23,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116568875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:43:23,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:43:23,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-18 14:43:23,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804815175] [2024-11-18 14:43:23,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:43:23,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 14:43:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 14:43:23,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:43:23,326 INFO L87 Difference]: Start difference. First operand 2911 states and 3878 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 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 14:43:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:23,694 INFO L93 Difference]: Finished difference Result 8901 states and 11933 transitions. [2024-11-18 14:43:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:43:23,695 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-18 14:43:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:23,704 INFO L225 Difference]: With dead ends: 8901 [2024-11-18 14:43:23,704 INFO L226 Difference]: Without dead ends: 6039 [2024-11-18 14:43:23,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-18 14:43:23,710 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 615 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:23,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 485 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:43:23,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6039 states. [2024-11-18 14:43:23,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6039 to 5947. [2024-11-18 14:43:23,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5947 states, 5946 states have (on average 1.3163471241170535) internal successors, (7827), 5946 states have internal predecessors, (7827), 0 states have call successors, (0), 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 14:43:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5947 states to 5947 states and 7827 transitions. [2024-11-18 14:43:23,832 INFO L78 Accepts]: Start accepts. Automaton has 5947 states and 7827 transitions. Word has length 74 [2024-11-18 14:43:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:23,832 INFO L471 AbstractCegarLoop]: Abstraction has 5947 states and 7827 transitions. [2024-11-18 14:43:23,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 21 states have internal predecessors, (161), 0 states have call successors, (0), 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 14:43:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5947 states and 7827 transitions. [2024-11-18 14:43:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 14:43:23,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:23,834 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:23,848 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 14:43:24,034 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,SelfDestructingSolverStorable19 [2024-11-18 14:43:24,035 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:24,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:24,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1952225691, now seen corresponding path program 1 times [2024-11-18 14:43:24,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:24,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101035166] [2024-11-18 14:43:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:24,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:24,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:24,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101035166] [2024-11-18 14:43:24,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101035166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:43:24,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187281949] [2024-11-18 14:43:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:24,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:43:24,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:43:24,271 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 14:43:24,272 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 14:43:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:24,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 14:43:24,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:43:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:24,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:43:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:25,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187281949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:43:25,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:43:25,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2024-11-18 14:43:25,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757690060] [2024-11-18 14:43:25,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:43:25,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-18 14:43:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:25,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-18 14:43:25,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2024-11-18 14:43:25,952 INFO L87 Difference]: Start difference. First operand 5947 states and 7827 transitions. Second operand has 30 states, 30 states have (on average 6.3) internal successors, (189), 30 states have internal predecessors, (189), 0 states have call successors, (0), 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 14:43:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:28,163 INFO L93 Difference]: Finished difference Result 18829 states and 24540 transitions. [2024-11-18 14:43:28,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-18 14:43:28,164 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.3) internal successors, (189), 30 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-18 14:43:28,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:28,182 INFO L225 Difference]: With dead ends: 18829 [2024-11-18 14:43:28,182 INFO L226 Difference]: Without dead ends: 12931 [2024-11-18 14:43:28,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=819, Invalid=3213, Unknown=0, NotChecked=0, Total=4032 [2024-11-18 14:43:28,191 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 1853 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:28,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1853 Valid, 975 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:43:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12931 states. [2024-11-18 14:43:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12931 to 11259. [2024-11-18 14:43:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11259 states, 11258 states have (on average 1.2909930715935334) internal successors, (14534), 11258 states have internal predecessors, (14534), 0 states have call successors, (0), 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 14:43:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11259 states to 11259 states and 14534 transitions. [2024-11-18 14:43:28,473 INFO L78 Accepts]: Start accepts. Automaton has 11259 states and 14534 transitions. Word has length 74 [2024-11-18 14:43:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:28,473 INFO L471 AbstractCegarLoop]: Abstraction has 11259 states and 14534 transitions. [2024-11-18 14:43:28,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.3) internal successors, (189), 30 states have internal predecessors, (189), 0 states have call successors, (0), 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 14:43:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 11259 states and 14534 transitions. [2024-11-18 14:43:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 14:43:28,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:28,475 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:28,488 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 14:43:28,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:43:28,680 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:28,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:28,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1982171291, now seen corresponding path program 1 times [2024-11-18 14:43:28,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:28,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766536523] [2024-11-18 14:43:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:28,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:28,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:28,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766536523] [2024-11-18 14:43:28,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766536523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:43:28,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139376899] [2024-11-18 14:43:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:28,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:43:28,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:43:28,944 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 14:43:28,944 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 14:43:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:29,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 14:43:29,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:43:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:29,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:43:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:29,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139376899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:43:29,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:43:29,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-18 14:43:29,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354719671] [2024-11-18 14:43:29,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:43:29,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 14:43:29,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:29,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 14:43:29,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-18 14:43:29,889 INFO L87 Difference]: Start difference. First operand 11259 states and 14534 transitions. Second operand has 21 states, 21 states have (on average 8.142857142857142) internal successors, (171), 20 states have internal predecessors, (171), 0 states have call successors, (0), 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 14:43:30,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:43:30,318 INFO L93 Difference]: Finished difference Result 22953 states and 29741 transitions. [2024-11-18 14:43:30,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:43:30,318 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.142857142857142) internal successors, (171), 20 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-18 14:43:30,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:43:30,333 INFO L225 Difference]: With dead ends: 22953 [2024-11-18 14:43:30,333 INFO L226 Difference]: Without dead ends: 11743 [2024-11-18 14:43:30,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-11-18 14:43:30,344 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 609 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:43:30,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 596 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:43:30,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11743 states. [2024-11-18 14:43:30,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11743 to 10611. [2024-11-18 14:43:30,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10611 states, 10610 states have (on average 1.2804901036757776) internal successors, (13586), 10610 states have internal predecessors, (13586), 0 states have call successors, (0), 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 14:43:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10611 states to 10611 states and 13586 transitions. [2024-11-18 14:43:30,615 INFO L78 Accepts]: Start accepts. Automaton has 10611 states and 13586 transitions. Word has length 75 [2024-11-18 14:43:30,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:43:30,615 INFO L471 AbstractCegarLoop]: Abstraction has 10611 states and 13586 transitions. [2024-11-18 14:43:30,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.142857142857142) internal successors, (171), 20 states have internal predecessors, (171), 0 states have call successors, (0), 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 14:43:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 10611 states and 13586 transitions. [2024-11-18 14:43:30,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:43:30,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:43:30,617 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:43:30,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:43:30,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:43:30,817 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:43:30,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:43:30,818 INFO L85 PathProgramCache]: Analyzing trace with hash -332355253, now seen corresponding path program 1 times [2024-11-18 14:43:30,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:43:30,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277061053] [2024-11-18 14:43:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:30,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:43:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:31,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:43:31,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277061053] [2024-11-18 14:43:31,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277061053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:43:31,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583564087] [2024-11-18 14:43:31,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:43:31,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:43:31,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:43:31,678 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 14:43:31,678 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 14:43:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:43:31,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-18 14:43:31,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:43:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:33,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:43:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:43:35,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583564087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:43:35,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:43:35,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 19] total 57 [2024-11-18 14:43:35,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38284722] [2024-11-18 14:43:35,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:43:35,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-18 14:43:35,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:43:35,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-18 14:43:35,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2888, Unknown=0, NotChecked=0, Total=3192 [2024-11-18 14:43:35,348 INFO L87 Difference]: Start difference. First operand 10611 states and 13586 transitions. Second operand has 57 states, 57 states have (on average 3.6491228070175437) internal successors, (208), 57 states have internal predecessors, (208), 0 states have call successors, (0), 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 14:44:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:44:11,233 INFO L93 Difference]: Finished difference Result 32648 states and 41811 transitions. [2024-11-18 14:44:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2024-11-18 14:44:11,233 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.6491228070175437) internal successors, (208), 57 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-18 14:44:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:44:11,259 INFO L225 Difference]: With dead ends: 32648 [2024-11-18 14:44:11,259 INFO L226 Difference]: Without dead ends: 26374 [2024-11-18 14:44:11,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30104 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=12557, Invalid=68953, Unknown=0, NotChecked=0, Total=81510 [2024-11-18 14:44:11,275 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 6276 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 5048 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6276 SdHoareTripleChecker+Valid, 4029 SdHoareTripleChecker+Invalid, 5241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 5048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:44:11,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6276 Valid, 4029 Invalid, 5241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 5048 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 14:44:11,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26374 states. [2024-11-18 14:44:11,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26374 to 16959. [2024-11-18 14:44:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16959 states, 16958 states have (on average 1.286767307465503) internal successors, (21821), 16958 states have internal predecessors, (21821), 0 states have call successors, (0), 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 14:44:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16959 states to 16959 states and 21821 transitions. [2024-11-18 14:44:11,809 INFO L78 Accepts]: Start accepts. Automaton has 16959 states and 21821 transitions. Word has length 76 [2024-11-18 14:44:11,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:44:11,809 INFO L471 AbstractCegarLoop]: Abstraction has 16959 states and 21821 transitions. [2024-11-18 14:44:11,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.6491228070175437) internal successors, (208), 57 states have internal predecessors, (208), 0 states have call successors, (0), 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 14:44:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 16959 states and 21821 transitions. [2024-11-18 14:44:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 14:44:11,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:44:11,811 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:44:11,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:44:12,011 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,SelfDestructingSolverStorable22 [2024-11-18 14:44:12,012 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:44:12,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:44:12,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1240018761, now seen corresponding path program 1 times [2024-11-18 14:44:12,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:44:12,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679667651] [2024-11-18 14:44:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:44:12,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:44:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:44:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:44:12,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:44:12,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679667651] [2024-11-18 14:44:12,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679667651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:44:12,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192709062] [2024-11-18 14:44:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:44:12,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:44:12,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:44:12,453 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 14:44:12,454 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 14:44:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:44:12,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-18 14:44:12,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:44:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:44:14,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:44:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:44:18,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192709062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:44:18,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:44:18,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24, 25] total 60 [2024-11-18 14:44:18,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204565606] [2024-11-18 14:44:18,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:44:18,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-18 14:44:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:44:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-18 14:44:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=3043, Unknown=0, NotChecked=0, Total=3540 [2024-11-18 14:44:18,572 INFO L87 Difference]: Start difference. First operand 16959 states and 21821 transitions. Second operand has 60 states, 60 states have (on average 3.3333333333333335) internal successors, (200), 60 states have internal predecessors, (200), 0 states have call successors, (0), 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 14:44:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:44:24,210 INFO L93 Difference]: Finished difference Result 28741 states and 36989 transitions. [2024-11-18 14:44:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-18 14:44:24,211 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.3333333333333335) internal successors, (200), 60 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-18 14:44:24,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:44:24,234 INFO L225 Difference]: With dead ends: 28741 [2024-11-18 14:44:24,234 INFO L226 Difference]: Without dead ends: 21651 [2024-11-18 14:44:24,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3754 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2885, Invalid=11157, Unknown=0, NotChecked=0, Total=14042 [2024-11-18 14:44:24,243 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 2069 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:44:24,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 2002 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 14:44:24,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21651 states. [2024-11-18 14:44:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21651 to 15367. [2024-11-18 14:44:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 15366 states have (on average 1.2884940778341794) internal successors, (19799), 15366 states have internal predecessors, (19799), 0 states have call successors, (0), 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 14:44:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 19799 transitions. [2024-11-18 14:44:24,735 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 19799 transitions. Word has length 77 [2024-11-18 14:44:24,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:44:24,735 INFO L471 AbstractCegarLoop]: Abstraction has 15367 states and 19799 transitions. [2024-11-18 14:44:24,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.3333333333333335) internal successors, (200), 60 states have internal predecessors, (200), 0 states have call successors, (0), 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 14:44:24,735 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 19799 transitions. [2024-11-18 14:44:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 14:44:24,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:44:24,736 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:44:24,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 14:44:24,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:44:24,939 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:44:24,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:44:24,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1034757107, now seen corresponding path program 1 times [2024-11-18 14:44:24,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:44:24,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126498399] [2024-11-18 14:44:24,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:44:24,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:44:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:44:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:44:26,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:44:26,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126498399] [2024-11-18 14:44:26,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126498399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:44:26,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978676794] [2024-11-18 14:44:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:44:26,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:44:26,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:44:26,087 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 14:44:26,093 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 14:44:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:44:26,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 14:44:26,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:44:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:44:26,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:44:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:44:26,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978676794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:44:26,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:44:26,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 6] total 34 [2024-11-18 14:44:26,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554211943] [2024-11-18 14:44:26,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:44:26,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 14:44:26,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:44:26,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 14:44:26,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 14:44:26,593 INFO L87 Difference]: Start difference. First operand 15367 states and 19799 transitions. Second operand has 34 states, 34 states have (on average 6.4411764705882355) internal successors, (219), 34 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)