./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.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 f7497e4203b86f15acb74ef94ae3bce6255aa8233294110bb99f24cde0725dc7 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 22:30:20,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 22:30:20,941 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 22:30:20,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 22:30:20,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 22:30:20,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 22:30:20,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 22:30:20,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 22:30:20,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 22:30:20,999 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 22:30:20,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 22:30:20,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 22:30:20,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 22:30:21,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 22:30:21,000 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 22:30:21,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 22:30:21,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 22:30:21,001 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 22:30:21,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 22:30:21,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 22:30:21,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 22:30:21,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 22:30:21,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 22:30:21,003 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 22:30:21,003 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 22:30:21,003 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 22:30:21,004 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 22:30:21,004 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 22:30:21,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 22:30:21,004 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 22:30:21,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 22:30:21,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 22:30:21,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:30:21,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 22:30:21,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 22:30:21,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 22:30:21,005 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 22:30:21,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 22:30:21,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 22:30:21,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 22:30:21,006 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 22:30:21,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 22:30:21,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7497e4203b86f15acb74ef94ae3bce6255aa8233294110bb99f24cde0725dc7 [2024-11-19 22:30:21,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 22:30:21,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 22:30:21,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 22:30:21,228 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 22:30:21,229 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 22:30:21,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c [2024-11-19 22:30:22,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 22:30:22,696 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 22:30:22,697 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c [2024-11-19 22:30:22,710 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfdb3955b/d5739ce0de0841beaa902742e65906fd/FLAGf78b41469 [2024-11-19 22:30:23,083 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfdb3955b/d5739ce0de0841beaa902742e65906fd [2024-11-19 22:30:23,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 22:30:23,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 22:30:23,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 22:30:23,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 22:30:23,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 22:30:23,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784f459b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23, skipping insertion in model container [2024-11-19 22:30:23,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,120 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 22:30:23,307 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.5.ufo.BOUNDED-10.pals.c[11233,11246] [2024-11-19 22:30:23,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:30:23,320 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 22:30:23,356 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.5.ufo.BOUNDED-10.pals.c[11233,11246] [2024-11-19 22:30:23,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:30:23,370 INFO L204 MainTranslator]: Completed translation [2024-11-19 22:30:23,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23 WrapperNode [2024-11-19 22:30:23,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 22:30:23,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 22:30:23,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 22:30:23,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 22:30:23,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,417 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 338 [2024-11-19 22:30:23,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 22:30:23,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 22:30:23,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 22:30:23,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 22:30:23,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,438 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 22:30:23,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,448 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 22:30:23,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 22:30:23,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 22:30:23,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 22:30:23,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (1/1) ... [2024-11-19 22:30:23,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:30:23,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:30:23,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 22:30:23,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 22:30:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 22:30:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 22:30:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 22:30:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 22:30:23,617 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 22:30:23,619 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 22:30:23,939 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-11-19 22:30:23,940 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 22:30:23,950 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 22:30:23,950 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 22:30:23,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:30:23 BoogieIcfgContainer [2024-11-19 22:30:23,951 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 22:30:23,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 22:30:23,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 22:30:23,955 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 22:30:23,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:30:23" (1/3) ... [2024-11-19 22:30:23,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b9fdd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:30:23, skipping insertion in model container [2024-11-19 22:30:23,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:30:23" (2/3) ... [2024-11-19 22:30:23,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b9fdd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:30:23, skipping insertion in model container [2024-11-19 22:30:23,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:30:23" (3/3) ... [2024-11-19 22:30:23,958 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c [2024-11-19 22:30:23,974 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 22:30:23,974 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 22:30:24,039 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 22:30:24,044 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;@1c60f610, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 22:30:24,045 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 22:30:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.7530864197530864) internal successors, (142), 82 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 22:30:24,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:24,056 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] [2024-11-19 22:30:24,057 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:24,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:24,061 INFO L85 PathProgramCache]: Analyzing trace with hash -255059087, now seen corresponding path program 1 times [2024-11-19 22:30:24,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:24,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648043425] [2024-11-19 22:30:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:24,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:24,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:24,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648043425] [2024-11-19 22:30:24,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648043425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:24,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:24,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 22:30:24,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154365336] [2024-11-19 22:30:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:24,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 22:30:24,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 22:30:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 22:30:24,315 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.7530864197530864) internal successors, (142), 82 states have internal predecessors, (142), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:24,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:24,331 INFO L93 Difference]: Finished difference Result 130 states and 216 transitions. [2024-11-19 22:30:24,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 22:30:24,333 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-11-19 22:30:24,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:24,339 INFO L225 Difference]: With dead ends: 130 [2024-11-19 22:30:24,340 INFO L226 Difference]: Without dead ends: 79 [2024-11-19 22:30:24,342 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 [2024-11-19 22:30:24,345 INFO L432 NwaCegarLoop]: 139 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, 139 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:24,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:24,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-19 22:30:24,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-19 22:30:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 78 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 135 transitions. [2024-11-19 22:30:24,387 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 135 transitions. Word has length 23 [2024-11-19 22:30:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:24,387 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 135 transitions. [2024-11-19 22:30:24,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:24,387 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 135 transitions. [2024-11-19 22:30:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 22:30:24,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:24,388 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] [2024-11-19 22:30:24,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 22:30:24,389 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:24,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:24,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2045763503, now seen corresponding path program 1 times [2024-11-19 22:30:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:24,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451242078] [2024-11-19 22:30:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:24,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:24,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:24,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451242078] [2024-11-19 22:30:24,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451242078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:24,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:24,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:30:24,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382485780] [2024-11-19 22:30:24,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:24,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:30:24,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:24,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:30:24,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:30:24,599 INFO L87 Difference]: Start difference. First operand 79 states and 135 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:24,672 INFO L93 Difference]: Finished difference Result 125 states and 206 transitions. [2024-11-19 22:30:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:30:24,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-11-19 22:30:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:24,674 INFO L225 Difference]: With dead ends: 125 [2024-11-19 22:30:24,676 INFO L226 Difference]: Without dead ends: 79 [2024-11-19 22:30:24,676 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 [2024-11-19 22:30:24,677 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:24,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 496 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:30:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-19 22:30:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-19 22:30:24,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.3333333333333333) internal successors, (104), 78 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2024-11-19 22:30:24,684 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 23 [2024-11-19 22:30:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:24,684 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2024-11-19 22:30:24,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2024-11-19 22:30:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-19 22:30:24,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:24,686 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, 1, 1, 1, 1] [2024-11-19 22:30:24,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 22:30:24,686 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:24,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:24,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1411199270, now seen corresponding path program 1 times [2024-11-19 22:30:24,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:24,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313609418] [2024-11-19 22:30:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:24,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:24,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:24,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313609418] [2024-11-19 22:30:24,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313609418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:24,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:24,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:30:24,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425591091] [2024-11-19 22:30:24,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:24,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:30:24,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:24,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:30:24,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:30:24,908 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:25,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:25,143 INFO L93 Difference]: Finished difference Result 499 states and 774 transitions. [2024-11-19 22:30:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 22:30:25,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-11-19 22:30:25,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:25,150 INFO L225 Difference]: With dead ends: 499 [2024-11-19 22:30:25,150 INFO L226 Difference]: Without dead ends: 457 [2024-11-19 22:30:25,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-11-19 22:30:25,153 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 758 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:25,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1307 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:30:25,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-11-19 22:30:25,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 119. [2024-11-19 22:30:25,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.423728813559322) internal successors, (168), 118 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 168 transitions. [2024-11-19 22:30:25,199 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 168 transitions. Word has length 53 [2024-11-19 22:30:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:25,200 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 168 transitions. [2024-11-19 22:30:25,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 168 transitions. [2024-11-19 22:30:25,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 22:30:25,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:25,202 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, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:25,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 22:30:25,203 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:25,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:25,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1832103350, now seen corresponding path program 1 times [2024-11-19 22:30:25,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:25,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038814084] [2024-11-19 22:30:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:25,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:25,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:25,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038814084] [2024-11-19 22:30:25,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038814084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:25,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:25,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:30:25,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030684272] [2024-11-19 22:30:25,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:25,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:30:25,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:25,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:30:25,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:25,271 INFO L87 Difference]: Start difference. First operand 119 states and 168 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:25,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:25,284 INFO L93 Difference]: Finished difference Result 272 states and 411 transitions. [2024-11-19 22:30:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:30:25,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-11-19 22:30:25,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:25,286 INFO L225 Difference]: With dead ends: 272 [2024-11-19 22:30:25,286 INFO L226 Difference]: Without dead ends: 190 [2024-11-19 22:30:25,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:25,287 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 43 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:25,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 164 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-19 22:30:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2024-11-19 22:30:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4759358288770053) internal successors, (276), 187 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 276 transitions. [2024-11-19 22:30:25,295 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 276 transitions. Word has length 55 [2024-11-19 22:30:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:25,295 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 276 transitions. [2024-11-19 22:30:25,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 276 transitions. [2024-11-19 22:30:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 22:30:25,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:25,296 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, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:25,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 22:30:25,297 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:25,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:25,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1898596862, now seen corresponding path program 1 times [2024-11-19 22:30:25,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:25,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261914970] [2024-11-19 22:30:25,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:25,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:25,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:25,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261914970] [2024-11-19 22:30:25,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261914970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:25,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:25,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:30:25,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592989334] [2024-11-19 22:30:25,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:25,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:30:25,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:25,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:30:25,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:30:25,576 INFO L87 Difference]: Start difference. First operand 188 states and 276 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:25,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:25,796 INFO L93 Difference]: Finished difference Result 341 states and 516 transitions. [2024-11-19 22:30:25,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:30:25,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-11-19 22:30:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:25,801 INFO L225 Difference]: With dead ends: 341 [2024-11-19 22:30:25,801 INFO L226 Difference]: Without dead ends: 190 [2024-11-19 22:30:25,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-19 22:30:25,802 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 254 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:25,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 350 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-19 22:30:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2024-11-19 22:30:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.46524064171123) internal successors, (274), 187 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 274 transitions. [2024-11-19 22:30:25,810 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 274 transitions. Word has length 55 [2024-11-19 22:30:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:25,810 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 274 transitions. [2024-11-19 22:30:25,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 274 transitions. [2024-11-19 22:30:25,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 22:30:25,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:25,812 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:25,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 22:30:25,812 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:25,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1687762504, now seen corresponding path program 1 times [2024-11-19 22:30:25,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:25,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945057560] [2024-11-19 22:30:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:25,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:26,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945057560] [2024-11-19 22:30:26,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945057560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:26,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:26,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 22:30:26,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904773246] [2024-11-19 22:30:26,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:26,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 22:30:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 22:30:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 22:30:26,019 INFO L87 Difference]: Start difference. First operand 188 states and 274 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:26,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:26,048 INFO L93 Difference]: Finished difference Result 196 states and 283 transitions. [2024-11-19 22:30:26,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 22:30:26,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-19 22:30:26,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:26,049 INFO L225 Difference]: With dead ends: 196 [2024-11-19 22:30:26,049 INFO L226 Difference]: Without dead ends: 194 [2024-11-19 22:30:26,050 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 [2024-11-19 22:30:26,050 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 673 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 [2024-11-19 22:30:26,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 673 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:26,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-19 22:30:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-19 22:30:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.4455958549222798) internal successors, (279), 193 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 279 transitions. [2024-11-19 22:30:26,056 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 279 transitions. Word has length 56 [2024-11-19 22:30:26,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:26,056 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 279 transitions. [2024-11-19 22:30:26,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:26,057 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 279 transitions. [2024-11-19 22:30:26,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 22:30:26,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:26,058 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:26,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 22:30:26,058 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:26,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash -407583458, now seen corresponding path program 1 times [2024-11-19 22:30:26,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:26,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705961159] [2024-11-19 22:30:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:26,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:26,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:26,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705961159] [2024-11-19 22:30:26,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705961159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:26,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:26,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:30:26,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997464413] [2024-11-19 22:30:26,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:26,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:30:26,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:26,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:30:26,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:26,104 INFO L87 Difference]: Start difference. First operand 194 states and 279 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-19 22:30:26,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:26,117 INFO L93 Difference]: Finished difference Result 364 states and 540 transitions. [2024-11-19 22:30:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:30:26,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 57 [2024-11-19 22:30:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:26,118 INFO L225 Difference]: With dead ends: 364 [2024-11-19 22:30:26,119 INFO L226 Difference]: Without dead ends: 276 [2024-11-19 22:30:26,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:26,121 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 57 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 224 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 [2024-11-19 22:30:26,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-19 22:30:26,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2024-11-19 22:30:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.465201465201465) internal successors, (400), 273 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 400 transitions. [2024-11-19 22:30:26,135 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 400 transitions. Word has length 57 [2024-11-19 22:30:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:26,135 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 400 transitions. [2024-11-19 22:30:26,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-19 22:30:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 400 transitions. [2024-11-19 22:30:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 22:30:26,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:26,136 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:26,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 22:30:26,136 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:26,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:26,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1094534942, now seen corresponding path program 1 times [2024-11-19 22:30:26,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:26,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460064062] [2024-11-19 22:30:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:26,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:26,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460064062] [2024-11-19 22:30:26,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460064062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:26,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:26,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:30:26,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140499779] [2024-11-19 22:30:26,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:26,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:30:26,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:30:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:26,193 INFO L87 Difference]: Start difference. First operand 274 states and 400 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-19 22:30:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:26,205 INFO L93 Difference]: Finished difference Result 720 states and 1080 transitions. [2024-11-19 22:30:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:30:26,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 57 [2024-11-19 22:30:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:26,206 INFO L225 Difference]: With dead ends: 720 [2024-11-19 22:30:26,207 INFO L226 Difference]: Without dead ends: 485 [2024-11-19 22:30:26,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:26,207 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 53 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 224 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 [2024-11-19 22:30:26,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:26,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-11-19 22:30:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 483. [2024-11-19 22:30:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4771784232365146) internal successors, (712), 482 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 712 transitions. [2024-11-19 22:30:26,216 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 712 transitions. Word has length 57 [2024-11-19 22:30:26,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:26,217 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 712 transitions. [2024-11-19 22:30:26,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-19 22:30:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 712 transitions. [2024-11-19 22:30:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 22:30:26,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:26,218 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:26,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 22:30:26,218 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:26,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:26,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1120933858, now seen corresponding path program 1 times [2024-11-19 22:30:26,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:26,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700168545] [2024-11-19 22:30:26,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:26,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:26,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:26,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700168545] [2024-11-19 22:30:26,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700168545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:26,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:26,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:30:26,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707319716] [2024-11-19 22:30:26,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:26,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:30:26,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:26,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:30:26,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:26,278 INFO L87 Difference]: Start difference. First operand 483 states and 712 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-19 22:30:26,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:26,294 INFO L93 Difference]: Finished difference Result 1323 states and 1974 transitions. [2024-11-19 22:30:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:30:26,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 57 [2024-11-19 22:30:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:26,296 INFO L225 Difference]: With dead ends: 1323 [2024-11-19 22:30:26,296 INFO L226 Difference]: Without dead ends: 879 [2024-11-19 22:30:26,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:26,297 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 51 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 226 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 [2024-11-19 22:30:26,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 226 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2024-11-19 22:30:26,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2024-11-19 22:30:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.4703196347031964) internal successors, (1288), 876 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1288 transitions. [2024-11-19 22:30:26,312 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1288 transitions. Word has length 57 [2024-11-19 22:30:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:26,312 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1288 transitions. [2024-11-19 22:30:26,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-19 22:30:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1288 transitions. [2024-11-19 22:30:26,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 22:30:26,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:26,313 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:26,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 22:30:26,314 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:26,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:26,314 INFO L85 PathProgramCache]: Analyzing trace with hash 659999006, now seen corresponding path program 1 times [2024-11-19 22:30:26,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:26,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765173049] [2024-11-19 22:30:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:26,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:26,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:26,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765173049] [2024-11-19 22:30:26,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765173049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:26,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:26,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:30:26,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201267016] [2024-11-19 22:30:26,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:26,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:30:26,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:26,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:30:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:26,349 INFO L87 Difference]: Start difference. First operand 877 states and 1288 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-19 22:30:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:26,372 INFO L93 Difference]: Finished difference Result 2457 states and 3618 transitions. [2024-11-19 22:30:26,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:30:26,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 57 [2024-11-19 22:30:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:26,380 INFO L225 Difference]: With dead ends: 2457 [2024-11-19 22:30:26,381 INFO L226 Difference]: Without dead ends: 1619 [2024-11-19 22:30:26,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:26,382 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 49 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 228 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 [2024-11-19 22:30:26,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 228 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:26,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2024-11-19 22:30:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1617. [2024-11-19 22:30:26,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1616 states have (on average 1.4504950495049505) internal successors, (2344), 1616 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:26,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2344 transitions. [2024-11-19 22:30:26,440 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2344 transitions. Word has length 57 [2024-11-19 22:30:26,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:26,441 INFO L471 AbstractCegarLoop]: Abstraction has 1617 states and 2344 transitions. [2024-11-19 22:30:26,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-19 22:30:26,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2344 transitions. [2024-11-19 22:30:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 22:30:26,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:26,441 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:26,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 22:30:26,445 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:26,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:26,445 INFO L85 PathProgramCache]: Analyzing trace with hash -143727074, now seen corresponding path program 1 times [2024-11-19 22:30:26,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:26,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806044694] [2024-11-19 22:30:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:26,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:26,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:26,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:26,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806044694] [2024-11-19 22:30:26,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806044694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:26,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:26,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:30:26,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345578213] [2024-11-19 22:30:26,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:26,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:30:26,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:26,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:30:26,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:26,513 INFO L87 Difference]: Start difference. First operand 1617 states and 2344 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-19 22:30:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:26,585 INFO L93 Difference]: Finished difference Result 4581 states and 6618 transitions. [2024-11-19 22:30:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:30:26,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 57 [2024-11-19 22:30:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:26,594 INFO L225 Difference]: With dead ends: 4581 [2024-11-19 22:30:26,594 INFO L226 Difference]: Without dead ends: 3003 [2024-11-19 22:30:26,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:26,596 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 55 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 230 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 [2024-11-19 22:30:26,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 230 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:26,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2024-11-19 22:30:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 3001. [2024-11-19 22:30:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 3000 states have (on average 1.4213333333333333) internal successors, (4264), 3000 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 4264 transitions. [2024-11-19 22:30:26,689 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 4264 transitions. Word has length 57 [2024-11-19 22:30:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:26,690 INFO L471 AbstractCegarLoop]: Abstraction has 3001 states and 4264 transitions. [2024-11-19 22:30:26,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2024-11-19 22:30:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 4264 transitions. [2024-11-19 22:30:26,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 22:30:26,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:26,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:26,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 22:30:26,691 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:26,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:26,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1172786557, now seen corresponding path program 1 times [2024-11-19 22:30:26,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:26,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437251888] [2024-11-19 22:30:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:26,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 22:30:26,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:26,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437251888] [2024-11-19 22:30:26,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437251888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:26,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:26,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:30:26,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72069071] [2024-11-19 22:30:26,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:26,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:30:26,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:26,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:30:26,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:30:26,887 INFO L87 Difference]: Start difference. First operand 3001 states and 4264 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:27,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:27,407 INFO L93 Difference]: Finished difference Result 17605 states and 25070 transitions. [2024-11-19 22:30:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:30:27,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 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 [2024-11-19 22:30:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:27,450 INFO L225 Difference]: With dead ends: 17605 [2024-11-19 22:30:27,451 INFO L226 Difference]: Without dead ends: 15491 [2024-11-19 22:30:27,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:30:27,460 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 549 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:27,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 710 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 22:30:27,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15491 states. [2024-11-19 22:30:27,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15491 to 5545. [2024-11-19 22:30:27,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5545 states, 5544 states have (on average 1.4155844155844155) internal successors, (7848), 5544 states have internal predecessors, (7848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 7848 transitions. [2024-11-19 22:30:27,705 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 7848 transitions. Word has length 76 [2024-11-19 22:30:27,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:27,706 INFO L471 AbstractCegarLoop]: Abstraction has 5545 states and 7848 transitions. [2024-11-19 22:30:27,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:27,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 7848 transitions. [2024-11-19 22:30:27,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 22:30:27,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:27,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:27,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 22:30:27,708 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:27,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:27,709 INFO L85 PathProgramCache]: Analyzing trace with hash 329331843, now seen corresponding path program 1 times [2024-11-19 22:30:27,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:27,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031518836] [2024-11-19 22:30:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:27,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 22:30:27,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:27,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031518836] [2024-11-19 22:30:27,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031518836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:27,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:27,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:30:27,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693989437] [2024-11-19 22:30:27,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:27,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:30:27,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:27,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:30:27,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:30:27,834 INFO L87 Difference]: Start difference. First operand 5545 states and 7848 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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) [2024-11-19 22:30:28,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:28,163 INFO L93 Difference]: Finished difference Result 20565 states and 29262 transitions. [2024-11-19 22:30:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:30:28,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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 76 [2024-11-19 22:30:28,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:28,205 INFO L225 Difference]: With dead ends: 20565 [2024-11-19 22:30:28,205 INFO L226 Difference]: Without dead ends: 17603 [2024-11-19 22:30:28,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:30:28,212 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 597 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:28,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 719 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:30:28,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17603 states. [2024-11-19 22:30:28,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17603 to 9561. [2024-11-19 22:30:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9561 states, 9560 states have (on average 1.4117154811715482) internal successors, (13496), 9560 states have internal predecessors, (13496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:28,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9561 states to 9561 states and 13496 transitions. [2024-11-19 22:30:28,479 INFO L78 Accepts]: Start accepts. Automaton has 9561 states and 13496 transitions. Word has length 76 [2024-11-19 22:30:28,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:28,479 INFO L471 AbstractCegarLoop]: Abstraction has 9561 states and 13496 transitions. [2024-11-19 22:30:28,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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) [2024-11-19 22:30:28,479 INFO L276 IsEmpty]: Start isEmpty. Operand 9561 states and 13496 transitions. [2024-11-19 22:30:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 22:30:28,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:28,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:28,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 22:30:28,481 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:28,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:28,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1886136957, now seen corresponding path program 1 times [2024-11-19 22:30:28,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:28,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826710803] [2024-11-19 22:30:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:28,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 22:30:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826710803] [2024-11-19 22:30:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826710803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:28,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:28,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:30:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105893729] [2024-11-19 22:30:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:28,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:30:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:30:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:30:28,580 INFO L87 Difference]: Start difference. First operand 9561 states and 13496 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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) [2024-11-19 22:30:29,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:29,002 INFO L93 Difference]: Finished difference Result 23525 states and 33438 transitions. [2024-11-19 22:30:29,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:30:29,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 76 [2024-11-19 22:30:29,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:29,028 INFO L225 Difference]: With dead ends: 23525 [2024-11-19 22:30:29,028 INFO L226 Difference]: Without dead ends: 20563 [2024-11-19 22:30:29,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:30:29,034 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 641 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:29,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 700 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:30:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20563 states. [2024-11-19 22:30:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20563 to 12521. [2024-11-19 22:30:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12521 states, 12520 states have (on average 1.4115015974440894) internal successors, (17672), 12520 states have internal predecessors, (17672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12521 states to 12521 states and 17672 transitions. [2024-11-19 22:30:29,490 INFO L78 Accepts]: Start accepts. Automaton has 12521 states and 17672 transitions. Word has length 76 [2024-11-19 22:30:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:29,490 INFO L471 AbstractCegarLoop]: Abstraction has 12521 states and 17672 transitions. [2024-11-19 22:30:29,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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) [2024-11-19 22:30:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 12521 states and 17672 transitions. [2024-11-19 22:30:29,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 22:30:29,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:29,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:29,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 22:30:29,492 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:29,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:29,493 INFO L85 PathProgramCache]: Analyzing trace with hash -105204093, now seen corresponding path program 1 times [2024-11-19 22:30:29,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:29,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201819299] [2024-11-19 22:30:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:29,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 22:30:29,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:29,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201819299] [2024-11-19 22:30:29,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201819299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:29,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:29,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:30:29,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891639397] [2024-11-19 22:30:29,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:29,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:30:29,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:30:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:30:29,651 INFO L87 Difference]: Start difference. First operand 12521 states and 17672 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2024-11-19 22:30:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:30,082 INFO L93 Difference]: Finished difference Result 26485 states and 37614 transitions. [2024-11-19 22:30:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:30:30,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 76 [2024-11-19 22:30:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:30,116 INFO L225 Difference]: With dead ends: 26485 [2024-11-19 22:30:30,116 INFO L226 Difference]: Without dead ends: 23523 [2024-11-19 22:30:30,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:30:30,122 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 599 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:30,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 726 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:30:30,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23523 states. [2024-11-19 22:30:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23523 to 15481. [2024-11-19 22:30:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15481 states, 15480 states have (on average 1.4113695090439276) internal successors, (21848), 15480 states have internal predecessors, (21848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15481 states to 15481 states and 21848 transitions. [2024-11-19 22:30:30,441 INFO L78 Accepts]: Start accepts. Automaton has 15481 states and 21848 transitions. Word has length 76 [2024-11-19 22:30:30,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:30,441 INFO L471 AbstractCegarLoop]: Abstraction has 15481 states and 21848 transitions. [2024-11-19 22:30:30,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2024-11-19 22:30:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 15481 states and 21848 transitions. [2024-11-19 22:30:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 22:30:30,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:30,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:30,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 22:30:30,444 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:30,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash -908930173, now seen corresponding path program 1 times [2024-11-19 22:30:30,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:30,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763985329] [2024-11-19 22:30:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:30,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 22:30:30,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:30,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763985329] [2024-11-19 22:30:30,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763985329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:30,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:30,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:30:30,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46788854] [2024-11-19 22:30:30,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:30,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:30:30,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:30,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:30:30,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:30:30,583 INFO L87 Difference]: Start difference. First operand 15481 states and 21848 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:31,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:31,039 INFO L93 Difference]: Finished difference Result 29445 states and 41790 transitions. [2024-11-19 22:30:31,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:30:31,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2024-11-19 22:30:31,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:31,080 INFO L225 Difference]: With dead ends: 29445 [2024-11-19 22:30:31,080 INFO L226 Difference]: Without dead ends: 26483 [2024-11-19 22:30:31,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:30:31,088 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 553 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:31,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 806 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:30:31,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26483 states. [2024-11-19 22:30:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26483 to 18441. [2024-11-19 22:30:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18441 states, 18440 states have (on average 1.4112798264642084) internal successors, (26024), 18440 states have internal predecessors, (26024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18441 states to 18441 states and 26024 transitions. [2024-11-19 22:30:31,668 INFO L78 Accepts]: Start accepts. Automaton has 18441 states and 26024 transitions. Word has length 76 [2024-11-19 22:30:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:31,668 INFO L471 AbstractCegarLoop]: Abstraction has 18441 states and 26024 transitions. [2024-11-19 22:30:31,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 18441 states and 26024 transitions. [2024-11-19 22:30:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-19 22:30:31,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:31,672 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:31,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 22:30:31,672 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:31,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash -981258812, now seen corresponding path program 1 times [2024-11-19 22:30:31,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:31,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195393344] [2024-11-19 22:30:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:31,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:31,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:31,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195393344] [2024-11-19 22:30:31,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195393344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:31,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:31,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:30:31,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059173678] [2024-11-19 22:30:31,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:31,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:30:31,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:31,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:30:31,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:31,761 INFO L87 Difference]: Start difference. First operand 18441 states and 26024 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:32,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:32,127 INFO L93 Difference]: Finished difference Result 36845 states and 52010 transitions. [2024-11-19 22:30:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:30:32,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 [2024-11-19 22:30:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:32,147 INFO L225 Difference]: With dead ends: 36845 [2024-11-19 22:30:32,147 INFO L226 Difference]: Without dead ends: 18443 [2024-11-19 22:30:32,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:32,157 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 45 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 230 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 [2024-11-19 22:30:32,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 230 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18443 states. [2024-11-19 22:30:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18443 to 18441. [2024-11-19 22:30:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18441 states, 18440 states have (on average 1.3952277657266812) internal successors, (25728), 18440 states have internal predecessors, (25728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:32,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18441 states to 18441 states and 25728 transitions. [2024-11-19 22:30:32,438 INFO L78 Accepts]: Start accepts. Automaton has 18441 states and 25728 transitions. Word has length 77 [2024-11-19 22:30:32,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:32,438 INFO L471 AbstractCegarLoop]: Abstraction has 18441 states and 25728 transitions. [2024-11-19 22:30:32,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:32,438 INFO L276 IsEmpty]: Start isEmpty. Operand 18441 states and 25728 transitions. [2024-11-19 22:30:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-19 22:30:32,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:32,439 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:32,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 22:30:32,440 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:32,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:32,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1342228763, now seen corresponding path program 1 times [2024-11-19 22:30:32,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:32,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753350598] [2024-11-19 22:30:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:32,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:32,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:32,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753350598] [2024-11-19 22:30:32,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753350598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:32,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:32,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:30:32,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330038536] [2024-11-19 22:30:32,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:32,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:30:32,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:32,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:30:32,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:32,497 INFO L87 Difference]: Start difference. First operand 18441 states and 25728 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:32,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:32,603 INFO L93 Difference]: Finished difference Result 25328 states and 35422 transitions. [2024-11-19 22:30:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:30:32,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-11-19 22:30:32,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:32,615 INFO L225 Difference]: With dead ends: 25328 [2024-11-19 22:30:32,615 INFO L226 Difference]: Without dead ends: 6926 [2024-11-19 22:30:32,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:32,629 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 39 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 227 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 [2024-11-19 22:30:32,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 227 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2024-11-19 22:30:32,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6918. [2024-11-19 22:30:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6918 states, 6917 states have (on average 1.3909209194737604) internal successors, (9621), 6917 states have internal predecessors, (9621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 9621 transitions. [2024-11-19 22:30:32,741 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 9621 transitions. Word has length 78 [2024-11-19 22:30:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:32,742 INFO L471 AbstractCegarLoop]: Abstraction has 6918 states and 9621 transitions. [2024-11-19 22:30:32,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 9621 transitions. [2024-11-19 22:30:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-19 22:30:32,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:32,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:32,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 22:30:32,743 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:32,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:32,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1119392618, now seen corresponding path program 1 times [2024-11-19 22:30:32,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:32,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237851874] [2024-11-19 22:30:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:32,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:32,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237851874] [2024-11-19 22:30:32,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237851874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:32,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:32,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:30:32,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130598995] [2024-11-19 22:30:32,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:32,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:30:32,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:30:32,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:32,821 INFO L87 Difference]: Start difference. First operand 6918 states and 9621 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:32,869 INFO L93 Difference]: Finished difference Result 10354 states and 14407 transitions. [2024-11-19 22:30:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:30:32,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-11-19 22:30:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:32,875 INFO L225 Difference]: With dead ends: 10354 [2024-11-19 22:30:32,875 INFO L226 Difference]: Without dead ends: 3488 [2024-11-19 22:30:32,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:32,880 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 41 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 206 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 [2024-11-19 22:30:32,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 206 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:32,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2024-11-19 22:30:32,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3486. [2024-11-19 22:30:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3485 states have (on average 1.3730272596843616) internal successors, (4785), 3485 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4785 transitions. [2024-11-19 22:30:32,934 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4785 transitions. Word has length 79 [2024-11-19 22:30:32,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:32,934 INFO L471 AbstractCegarLoop]: Abstraction has 3486 states and 4785 transitions. [2024-11-19 22:30:32,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:32,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4785 transitions. [2024-11-19 22:30:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-19 22:30:32,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:32,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:32,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 22:30:32,936 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:32,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:32,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1495153128, now seen corresponding path program 1 times [2024-11-19 22:30:32,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:32,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489373232] [2024-11-19 22:30:32,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:32,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:32,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:32,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489373232] [2024-11-19 22:30:32,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489373232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:32,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:32,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:30:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259908048] [2024-11-19 22:30:32,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:32,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:30:32,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:30:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:32,995 INFO L87 Difference]: Start difference. First operand 3486 states and 4785 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:33,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:33,023 INFO L93 Difference]: Finished difference Result 5206 states and 7153 transitions. [2024-11-19 22:30:33,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:30:33,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-11-19 22:30:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:33,026 INFO L225 Difference]: With dead ends: 5206 [2024-11-19 22:30:33,026 INFO L226 Difference]: Without dead ends: 1772 [2024-11-19 22:30:33,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:33,029 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 38 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 191 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 [2024-11-19 22:30:33,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 191 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2024-11-19 22:30:33,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1770. [2024-11-19 22:30:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1769 states have (on average 1.3527416619559074) internal successors, (2393), 1769 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2393 transitions. [2024-11-19 22:30:33,055 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2393 transitions. Word has length 81 [2024-11-19 22:30:33,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:33,056 INFO L471 AbstractCegarLoop]: Abstraction has 1770 states and 2393 transitions. [2024-11-19 22:30:33,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:33,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2393 transitions. [2024-11-19 22:30:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-19 22:30:33,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:33,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:33,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 22:30:33,057 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:33,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash 572569018, now seen corresponding path program 1 times [2024-11-19 22:30:33,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:33,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82904571] [2024-11-19 22:30:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:33,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:33,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:33,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82904571] [2024-11-19 22:30:33,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82904571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:30:33,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:30:33,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:30:33,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118797940] [2024-11-19 22:30:33,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:30:33,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:30:33,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:33,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:30:33,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:33,113 INFO L87 Difference]: Start difference. First operand 1770 states and 2393 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:33,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:33,131 INFO L93 Difference]: Finished difference Result 2632 states and 3565 transitions. [2024-11-19 22:30:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:30:33,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2024-11-19 22:30:33,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:33,133 INFO L225 Difference]: With dead ends: 2632 [2024-11-19 22:30:33,133 INFO L226 Difference]: Without dead ends: 914 [2024-11-19 22:30:33,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:30:33,134 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 35 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 176 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 [2024-11-19 22:30:33,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 176 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:30:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2024-11-19 22:30:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 912. [2024-11-19 22:30:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 911 states have (on average 1.3282107574094402) internal successors, (1210), 911 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:33,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1210 transitions. [2024-11-19 22:30:33,149 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1210 transitions. Word has length 83 [2024-11-19 22:30:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:33,149 INFO L471 AbstractCegarLoop]: Abstraction has 912 states and 1210 transitions. [2024-11-19 22:30:33,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1210 transitions. [2024-11-19 22:30:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-19 22:30:33,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:33,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:33,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 22:30:33,150 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:33,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:33,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1095761932, now seen corresponding path program 1 times [2024-11-19 22:30:33,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:33,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377253112] [2024-11-19 22:30:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:33,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 22:30:33,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377253112] [2024-11-19 22:30:33,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377253112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:30:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629000861] [2024-11-19 22:30:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:33,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:30:33,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:30:33,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:30:33,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 22:30:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:33,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 22:30:33,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:30:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:33,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:30:34,031 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:34,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629000861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:30:34,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:30:34,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 13 [2024-11-19 22:30:34,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799853505] [2024-11-19 22:30:34,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:30:34,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 22:30:34,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:34,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 22:30:34,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-19 22:30:34,033 INFO L87 Difference]: Start difference. First operand 912 states and 1210 transitions. Second operand has 13 states, 13 states have (on average 18.46153846153846) internal successors, (240), 13 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:34,280 INFO L93 Difference]: Finished difference Result 4666 states and 6101 transitions. [2024-11-19 22:30:34,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 22:30:34,280 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.46153846153846) internal successors, (240), 13 states have internal predecessors, (240), 0 states have call successors, (0), 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 85 [2024-11-19 22:30:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:34,285 INFO L225 Difference]: With dead ends: 4666 [2024-11-19 22:30:34,285 INFO L226 Difference]: Without dead ends: 3763 [2024-11-19 22:30:34,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2024-11-19 22:30:34,287 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 351 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:34,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1016 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:30:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2024-11-19 22:30:34,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3327. [2024-11-19 22:30:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3326 states have (on average 1.289837642814191) internal successors, (4290), 3326 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 4290 transitions. [2024-11-19 22:30:34,361 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 4290 transitions. Word has length 85 [2024-11-19 22:30:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:34,361 INFO L471 AbstractCegarLoop]: Abstraction has 3327 states and 4290 transitions. [2024-11-19 22:30:34,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.46153846153846) internal successors, (240), 13 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 4290 transitions. [2024-11-19 22:30:34,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-19 22:30:34,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:34,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:34,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 22:30:34,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-19 22:30:34,567 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:34,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:34,568 INFO L85 PathProgramCache]: Analyzing trace with hash 840781523, now seen corresponding path program 1 times [2024-11-19 22:30:34,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:34,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903037722] [2024-11-19 22:30:34,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:34,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:35,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:35,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903037722] [2024-11-19 22:30:35,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903037722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:30:35,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894474970] [2024-11-19 22:30:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:35,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:30:35,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:30:35,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:30:35,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 22:30:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:35,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 22:30:35,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:30:35,901 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:35,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:30:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:36,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894474970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:30:36,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:30:36,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 26 [2024-11-19 22:30:36,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223084173] [2024-11-19 22:30:36,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:30:36,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 22:30:36,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:36,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 22:30:36,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2024-11-19 22:30:36,489 INFO L87 Difference]: Start difference. First operand 3327 states and 4290 transitions. Second operand has 27 states, 27 states have (on average 7.703703703703703) internal successors, (208), 26 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) [2024-11-19 22:30:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:37,103 INFO L93 Difference]: Finished difference Result 9955 states and 12920 transitions. [2024-11-19 22:30:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 22:30:37,104 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.703703703703703) internal successors, (208), 26 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 86 [2024-11-19 22:30:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:37,111 INFO L225 Difference]: With dead ends: 9955 [2024-11-19 22:30:37,111 INFO L226 Difference]: Without dead ends: 6765 [2024-11-19 22:30:37,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=1083, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 22:30:37,114 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 549 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:37,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 604 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 22:30:37,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6765 states. [2024-11-19 22:30:37,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6765 to 6681. [2024-11-19 22:30:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6681 states, 6680 states have (on average 1.2790419161676647) internal successors, (8544), 6680 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:37,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6681 states to 6681 states and 8544 transitions. [2024-11-19 22:30:37,321 INFO L78 Accepts]: Start accepts. Automaton has 6681 states and 8544 transitions. Word has length 86 [2024-11-19 22:30:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:37,321 INFO L471 AbstractCegarLoop]: Abstraction has 6681 states and 8544 transitions. [2024-11-19 22:30:37,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.703703703703703) internal successors, (208), 26 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) [2024-11-19 22:30:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 6681 states and 8544 transitions. [2024-11-19 22:30:37,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-19 22:30:37,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:37,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:37,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 22:30:37,526 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,SelfDestructingSolverStorable22 [2024-11-19 22:30:37,527 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:37,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2139564589, now seen corresponding path program 1 times [2024-11-19 22:30:37,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:37,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804360860] [2024-11-19 22:30:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:37,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:37,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804360860] [2024-11-19 22:30:37,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804360860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:30:37,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513929338] [2024-11-19 22:30:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:37,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:30:37,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:30:37,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:30:37,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 22:30:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:37,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 22:30:37,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:30:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:38,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:30:39,148 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:39,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513929338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:30:39,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:30:39,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-19 22:30:39,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457258280] [2024-11-19 22:30:39,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:30:39,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 22:30:39,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:39,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 22:30:39,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-19 22:30:39,151 INFO L87 Difference]: Start difference. First operand 6681 states and 8544 transitions. Second operand has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 20 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:39,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:39,705 INFO L93 Difference]: Finished difference Result 19175 states and 24569 transitions. [2024-11-19 22:30:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 22:30:39,705 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 20 states have internal predecessors, (181), 0 states have call successors, (0), 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 86 [2024-11-19 22:30:39,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:39,715 INFO L225 Difference]: With dead ends: 19175 [2024-11-19 22:30:39,715 INFO L226 Difference]: Without dead ends: 13049 [2024-11-19 22:30:39,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-19 22:30:39,720 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 921 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:39,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 499 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 22:30:39,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13049 states. [2024-11-19 22:30:39,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13049 to 13045. [2024-11-19 22:30:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13045 states, 13044 states have (on average 1.2726157620361853) internal successors, (16600), 13044 states have internal predecessors, (16600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13045 states to 13045 states and 16600 transitions. [2024-11-19 22:30:39,965 INFO L78 Accepts]: Start accepts. Automaton has 13045 states and 16600 transitions. Word has length 86 [2024-11-19 22:30:39,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:39,965 INFO L471 AbstractCegarLoop]: Abstraction has 13045 states and 16600 transitions. [2024-11-19 22:30:39,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 20 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:39,965 INFO L276 IsEmpty]: Start isEmpty. Operand 13045 states and 16600 transitions. [2024-11-19 22:30:39,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-19 22:30:39,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:39,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:39,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 22:30:40,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:30:40,167 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:40,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash -537738683, now seen corresponding path program 1 times [2024-11-19 22:30:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:40,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657905731] [2024-11-19 22:30:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:40,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:40,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:40,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657905731] [2024-11-19 22:30:40,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657905731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:30:40,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628236159] [2024-11-19 22:30:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:40,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:30:40,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:30:40,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:30:40,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 22:30:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:40,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 22:30:40,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:30:41,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:41,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:30:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:42,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628236159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:30:42,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:30:42,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 32 [2024-11-19 22:30:42,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035053425] [2024-11-19 22:30:42,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:30:42,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 22:30:42,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:30:42,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 22:30:42,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2024-11-19 22:30:42,646 INFO L87 Difference]: Start difference. First operand 13045 states and 16600 transitions. Second operand has 32 states, 32 states have (on average 7.34375) internal successors, (235), 32 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:30:48,207 INFO L93 Difference]: Finished difference Result 90563 states and 116119 transitions. [2024-11-19 22:30:48,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-19 22:30:48,209 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.34375) internal successors, (235), 32 states have internal predecessors, (235), 0 states have call successors, (0), 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 86 [2024-11-19 22:30:48,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:30:48,289 INFO L225 Difference]: With dead ends: 90563 [2024-11-19 22:30:48,290 INFO L226 Difference]: Without dead ends: 77743 [2024-11-19 22:30:48,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2960 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1809, Invalid=7893, Unknown=0, NotChecked=0, Total=9702 [2024-11-19 22:30:48,310 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 2716 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 22:30:48,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2716 Valid, 1321 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 22:30:48,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77743 states. [2024-11-19 22:30:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77743 to 77003. [2024-11-19 22:30:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77003 states, 77002 states have (on average 1.2544479364172358) internal successors, (96595), 77002 states have internal predecessors, (96595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77003 states to 77003 states and 96595 transitions. [2024-11-19 22:30:51,144 INFO L78 Accepts]: Start accepts. Automaton has 77003 states and 96595 transitions. Word has length 86 [2024-11-19 22:30:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:30:51,144 INFO L471 AbstractCegarLoop]: Abstraction has 77003 states and 96595 transitions. [2024-11-19 22:30:51,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.34375) internal successors, (235), 32 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:30:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 77003 states and 96595 transitions. [2024-11-19 22:30:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-19 22:30:51,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:30:51,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:30:51,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 22:30:51,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:30:51,351 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:30:51,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:30:51,351 INFO L85 PathProgramCache]: Analyzing trace with hash 491513045, now seen corresponding path program 1 times [2024-11-19 22:30:51,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:30:51,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312895853] [2024-11-19 22:30:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:51,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:30:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:30:51,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:30:51,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312895853] [2024-11-19 22:30:51,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312895853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:30:51,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978227086] [2024-11-19 22:30:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:30:51,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:30:51,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:30:51,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:30:51,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 22:30:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:30:52,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-19 22:30:52,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:31:06,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:31:06,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:31:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:31:10,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978227086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:31:10,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:31:10,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 22] total 49 [2024-11-19 22:31:10,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126492430] [2024-11-19 22:31:10,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:31:10,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-19 22:31:10,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:31:10,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-19 22:31:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1960, Unknown=0, NotChecked=0, Total=2352 [2024-11-19 22:31:10,164 INFO L87 Difference]: Start difference. First operand 77003 states and 96595 transitions. Second operand has 49 states, 49 states have (on average 4.979591836734694) internal successors, (244), 49 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:31:27,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:31:27,876 INFO L93 Difference]: Finished difference Result 265515 states and 335793 transitions. [2024-11-19 22:31:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-19 22:31:27,876 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.979591836734694) internal successors, (244), 49 states have internal predecessors, (244), 0 states have call successors, (0), 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 88 [2024-11-19 22:31:27,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:31:28,080 INFO L225 Difference]: With dead ends: 265515 [2024-11-19 22:31:28,081 INFO L226 Difference]: Without dead ends: 192037 [2024-11-19 22:31:28,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=3395, Invalid=12607, Unknown=0, NotChecked=0, Total=16002 [2024-11-19 22:31:28,255 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 3392 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3392 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:31:28,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3392 Valid, 1962 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-19 22:31:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192037 states. [2024-11-19 22:31:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192037 to 162855. [2024-11-19 22:31:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162855 states, 162854 states have (on average 1.2415046606162574) internal successors, (202184), 162854 states have internal predecessors, (202184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:31:34,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162855 states to 162855 states and 202184 transitions. [2024-11-19 22:31:34,834 INFO L78 Accepts]: Start accepts. Automaton has 162855 states and 202184 transitions. Word has length 88 [2024-11-19 22:31:34,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:31:34,834 INFO L471 AbstractCegarLoop]: Abstraction has 162855 states and 202184 transitions. [2024-11-19 22:31:34,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.979591836734694) internal successors, (244), 49 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:31:34,834 INFO L276 IsEmpty]: Start isEmpty. Operand 162855 states and 202184 transitions. [2024-11-19 22:31:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-19 22:31:34,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:31:34,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:31:34,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 22:31:35,036 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,SelfDestructingSolverStorable25 [2024-11-19 22:31:35,037 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:31:35,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:31:35,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1383611002, now seen corresponding path program 1 times [2024-11-19 22:31:35,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:31:35,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591499504] [2024-11-19 22:31:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:31:35,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:31:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:31:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:31:35,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:31:35,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591499504] [2024-11-19 22:31:35,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591499504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:31:35,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025277612] [2024-11-19 22:31:35,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:31:35,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:31:35,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:31:35,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:31:35,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 22:31:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:31:35,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 22:31:35,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:31:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:31:36,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:31:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:31:37,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025277612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:31:37,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:31:37,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-11-19 22:31:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637060228] [2024-11-19 22:31:37,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:31:37,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-19 22:31:37,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:31:37,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-19 22:31:37,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 22:31:37,402 INFO L87 Difference]: Start difference. First operand 162855 states and 202184 transitions. Second operand has 35 states, 35 states have (on average 6.6) internal successors, (231), 35 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)