./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aba75d5c6112bb80051134ed7f98fd80207b53da5b894be601f1f010079e2e6e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:41:15,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:41:15,210 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:41:15,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:41:15,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:41:15,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:41:15,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:41:15,253 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:41:15,253 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:41:15,254 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:41:15,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:41:15,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:41:15,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:41:15,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:41:15,255 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:41:15,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:41:15,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:41:15,257 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:41:15,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:41:15,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:41:15,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:41:15,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:41:15,263 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:41:15,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:41:15,264 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:41:15,264 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:41:15,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:41:15,265 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:41:15,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:41:15,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:41:15,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:41:15,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:41:15,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:41:15,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:41:15,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:41:15,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:41:15,270 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:41:15,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:41:15,271 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:41:15,271 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:41:15,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:41:15,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:41:15,273 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aba75d5c6112bb80051134ed7f98fd80207b53da5b894be601f1f010079e2e6e [2024-11-18 14:41:15,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:41:15,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:41:15,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:41:15,560 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:41:15,560 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:41:15,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2024-11-18 14:41:17,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:41:17,305 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:41:17,306 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2024-11-18 14:41:17,320 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be8cf9f7c/d853b8558a5d49e38d351336f9618b85/FLAGf301ed50c [2024-11-18 14:41:17,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be8cf9f7c/d853b8558a5d49e38d351336f9618b85 [2024-11-18 14:41:17,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:41:17,341 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:41:17,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:41:17,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:41:17,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:41:17,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18eb7c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17, skipping insertion in model container [2024-11-18 14:41:17,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,387 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:41:17,722 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-var-start-time.4.ufo.UNBOUNDED.pals.c[9488,9501] [2024-11-18 14:41:17,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:41:17,742 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:41:17,800 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-var-start-time.4.ufo.UNBOUNDED.pals.c[9488,9501] [2024-11-18 14:41:17,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:41:17,822 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:41:17,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17 WrapperNode [2024-11-18 14:41:17,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:41:17,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:41:17,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:41:17,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:41:17,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,875 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 315 [2024-11-18 14:41:17,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:41:17,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:41:17,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:41:17,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:41:17,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,895 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,913 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 14:41:17,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,934 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:41:17,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:41:17,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:41:17,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:41:17,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (1/1) ... [2024-11-18 14:41:17,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:41:17,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:41:17,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:41:17,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:41:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:41:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:41:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:41:18,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:41:18,143 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:41:18,147 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:41:18,616 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2024-11-18 14:41:18,617 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:41:18,631 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:41:18,633 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:41:18,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:41:18 BoogieIcfgContainer [2024-11-18 14:41:18,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:41:18,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:41:18,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:41:18,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:41:18,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:41:17" (1/3) ... [2024-11-18 14:41:18,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edb7d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:41:18, skipping insertion in model container [2024-11-18 14:41:18,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:41:17" (2/3) ... [2024-11-18 14:41:18,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edb7d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:41:18, skipping insertion in model container [2024-11-18 14:41:18,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:41:18" (3/3) ... [2024-11-18 14:41:18,645 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2024-11-18 14:41:18,662 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:41:18,662 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:41:18,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:41:18,734 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;@2c303bd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:41:18,735 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:41:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 85 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 14:41:18,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:18,749 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] [2024-11-18 14:41:18,749 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:18,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:18,754 INFO L85 PathProgramCache]: Analyzing trace with hash -182548282, now seen corresponding path program 1 times [2024-11-18 14:41:18,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:18,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695480245] [2024-11-18 14:41:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:18,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:19,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:19,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695480245] [2024-11-18 14:41:19,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695480245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:19,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:19,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 14:41:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769600536] [2024-11-18 14:41:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:19,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:41:19,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:19,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:41:19,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:41:19,069 INFO L87 Difference]: Start difference. First operand has 86 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 85 states have internal predecessors, (145), 0 states have call successors, (0), 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 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:19,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:19,090 INFO L93 Difference]: Finished difference Result 139 states and 233 transitions. [2024-11-18 14:41:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:41:19,092 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-18 14:41:19,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:19,099 INFO L225 Difference]: With dead ends: 139 [2024-11-18 14:41:19,099 INFO L226 Difference]: Without dead ends: 82 [2024-11-18 14:41:19,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 14:41:19,104 INFO L432 NwaCegarLoop]: 138 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, 138 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:19,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:41:19,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-18 14:41:19,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-18 14:41:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.7037037037037037) internal successors, (138), 81 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 138 transitions. [2024-11-18 14:41:19,162 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 138 transitions. Word has length 29 [2024-11-18 14:41:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:19,163 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 138 transitions. [2024-11-18 14:41:19,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:19,169 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 138 transitions. [2024-11-18 14:41:19,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 14:41:19,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:19,185 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] [2024-11-18 14:41:19,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:41:19,185 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:19,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:19,186 INFO L85 PathProgramCache]: Analyzing trace with hash -316561788, now seen corresponding path program 1 times [2024-11-18 14:41:19,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:19,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266995903] [2024-11-18 14:41:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:19,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:19,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266995903] [2024-11-18 14:41:19,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266995903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:19,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:19,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:41:19,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275842621] [2024-11-18 14:41:19,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:19,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:41:19,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:19,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:41:19,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:41:19,407 INFO L87 Difference]: Start difference. First operand 82 states and 138 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:19,491 INFO L93 Difference]: Finished difference Result 138 states and 226 transitions. [2024-11-18 14:41:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:41:19,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-18 14:41:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:19,495 INFO L225 Difference]: With dead ends: 138 [2024-11-18 14:41:19,495 INFO L226 Difference]: Without dead ends: 82 [2024-11-18 14:41:19,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:41:19,496 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:19,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 515 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:41:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-18 14:41:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-18 14:41:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 81 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 114 transitions. [2024-11-18 14:41:19,504 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 114 transitions. Word has length 29 [2024-11-18 14:41:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:19,505 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 114 transitions. [2024-11-18 14:41:19,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2024-11-18 14:41:19,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 14:41:19,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:19,507 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] [2024-11-18 14:41:19,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:41:19,507 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:19,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:19,508 INFO L85 PathProgramCache]: Analyzing trace with hash 672474749, now seen corresponding path program 1 times [2024-11-18 14:41:19,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:19,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865548015] [2024-11-18 14:41:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:19,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:19,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:19,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865548015] [2024-11-18 14:41:19,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865548015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:19,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:19,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:41:19,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598153099] [2024-11-18 14:41:19,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:19,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:41:19,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:19,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:41:19,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:19,637 INFO L87 Difference]: Start difference. First operand 82 states and 114 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:19,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:19,664 INFO L93 Difference]: Finished difference Result 178 states and 268 transitions. [2024-11-18 14:41:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:41:19,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-11-18 14:41:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:19,666 INFO L225 Difference]: With dead ends: 178 [2024-11-18 14:41:19,666 INFO L226 Difference]: Without dead ends: 126 [2024-11-18 14:41:19,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:19,669 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 60 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:19,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:41:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-18 14:41:19,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2024-11-18 14:41:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.4796747967479675) internal successors, (182), 123 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2024-11-18 14:41:19,682 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 52 [2024-11-18 14:41:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:19,683 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 182 transitions. [2024-11-18 14:41:19,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions. [2024-11-18 14:41:19,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 14:41:19,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:19,685 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] [2024-11-18 14:41:19,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:41:19,685 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:19,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash -221780930, now seen corresponding path program 1 times [2024-11-18 14:41:19,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:19,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348082587] [2024-11-18 14:41:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:19,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:19,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348082587] [2024-11-18 14:41:19,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348082587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:19,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:19,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:41:19,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389269620] [2024-11-18 14:41:19,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:19,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:41:19,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:19,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:41:19,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:41:19,883 INFO L87 Difference]: Start difference. First operand 124 states and 182 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:19,986 INFO L93 Difference]: Finished difference Result 594 states and 942 transitions. [2024-11-18 14:41:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:41:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-11-18 14:41:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:19,990 INFO L225 Difference]: With dead ends: 594 [2024-11-18 14:41:19,990 INFO L226 Difference]: Without dead ends: 500 [2024-11-18 14:41:19,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:41:19,992 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 664 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:19,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 606 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:41:19,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-18 14:41:20,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 216. [2024-11-18 14:41:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.5302325581395348) internal successors, (329), 215 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 329 transitions. [2024-11-18 14:41:20,014 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 329 transitions. Word has length 52 [2024-11-18 14:41:20,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:20,014 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 329 transitions. [2024-11-18 14:41:20,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 329 transitions. [2024-11-18 14:41:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 14:41:20,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:20,016 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] [2024-11-18 14:41:20,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:41:20,017 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:20,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:20,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1331402393, now seen corresponding path program 1 times [2024-11-18 14:41:20,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:20,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707985075] [2024-11-18 14:41:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:20,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:20,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:20,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707985075] [2024-11-18 14:41:20,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707985075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:20,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:20,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:41:20,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020354174] [2024-11-18 14:41:20,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:20,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:41:20,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:20,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:41:20,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:41:20,388 INFO L87 Difference]: Start difference. First operand 216 states and 329 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-11-18 14:41:20,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:20,445 INFO L93 Difference]: Finished difference Result 230 states and 346 transitions. [2024-11-18 14:41:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:41:20,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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 [2024-11-18 14:41:20,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:20,447 INFO L225 Difference]: With dead ends: 230 [2024-11-18 14:41:20,448 INFO L226 Difference]: Without dead ends: 228 [2024-11-18 14:41:20,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:41:20,453 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:20,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 744 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:41:20,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-18 14:41:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-18 14:41:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.502202643171806) internal successors, (341), 227 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 341 transitions. [2024-11-18 14:41:20,468 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 341 transitions. Word has length 53 [2024-11-18 14:41:20,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:20,469 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 341 transitions. [2024-11-18 14:41:20,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-11-18 14:41:20,469 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 341 transitions. [2024-11-18 14:41:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 14:41:20,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:20,471 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] [2024-11-18 14:41:20,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:41:20,471 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:20,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1623620234, now seen corresponding path program 1 times [2024-11-18 14:41:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:20,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743364830] [2024-11-18 14:41:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:20,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:20,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:20,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743364830] [2024-11-18 14:41:20,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743364830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:20,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:20,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:41:20,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140382050] [2024-11-18 14:41:20,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:20,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:41:20,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:20,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:41:20,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:20,573 INFO L87 Difference]: Start difference. First operand 228 states and 341 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:20,601 INFO L93 Difference]: Finished difference Result 594 states and 913 transitions. [2024-11-18 14:41:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:41:20,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-11-18 14:41:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:20,606 INFO L225 Difference]: With dead ends: 594 [2024-11-18 14:41:20,606 INFO L226 Difference]: Without dead ends: 396 [2024-11-18 14:41:20,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:20,610 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 190 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 [2024-11-18 14:41:20,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 190 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:41:20,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-18 14:41:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 390. [2024-11-18 14:41:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.5141388174807198) internal successors, (589), 389 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 589 transitions. [2024-11-18 14:41:20,640 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 589 transitions. Word has length 54 [2024-11-18 14:41:20,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:20,640 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 589 transitions. [2024-11-18 14:41:20,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 589 transitions. [2024-11-18 14:41:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 14:41:20,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:20,644 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] [2024-11-18 14:41:20,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:41:20,644 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:20,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:20,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1627419246, now seen corresponding path program 1 times [2024-11-18 14:41:20,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:20,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752036500] [2024-11-18 14:41:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:20,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:20,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:20,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752036500] [2024-11-18 14:41:20,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752036500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:20,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:20,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:41:20,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557291447] [2024-11-18 14:41:20,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:20,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:41:20,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:41:20,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:20,746 INFO L87 Difference]: Start difference. First operand 390 states and 589 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) [2024-11-18 14:41:20,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:20,789 INFO L93 Difference]: Finished difference Result 1046 states and 1595 transitions. [2024-11-18 14:41:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:41:20,789 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 [2024-11-18 14:41:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:20,793 INFO L225 Difference]: With dead ends: 1046 [2024-11-18 14:41:20,793 INFO L226 Difference]: Without dead ends: 686 [2024-11-18 14:41:20,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:20,797 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 64 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:20,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:41:20,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-11-18 14:41:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 684. [2024-11-18 14:41:20,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.5036603221083455) internal successors, (1027), 683 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1027 transitions. [2024-11-18 14:41:20,817 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1027 transitions. Word has length 55 [2024-11-18 14:41:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:20,818 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1027 transitions. [2024-11-18 14:41:20,818 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) [2024-11-18 14:41:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1027 transitions. [2024-11-18 14:41:20,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 14:41:20,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:20,820 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] [2024-11-18 14:41:20,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:41:20,820 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:20,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:20,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1310378098, now seen corresponding path program 1 times [2024-11-18 14:41:20,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:20,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447872442] [2024-11-18 14:41:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:20,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:20,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:20,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447872442] [2024-11-18 14:41:20,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447872442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:20,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:20,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:41:20,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277542758] [2024-11-18 14:41:20,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:20,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:41:20,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:20,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:41:20,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:20,908 INFO L87 Difference]: Start difference. First operand 684 states and 1027 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) [2024-11-18 14:41:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:20,957 INFO L93 Difference]: Finished difference Result 1864 states and 2797 transitions. [2024-11-18 14:41:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:41:20,958 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 [2024-11-18 14:41:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:20,963 INFO L225 Difference]: With dead ends: 1864 [2024-11-18 14:41:20,963 INFO L226 Difference]: Without dead ends: 1210 [2024-11-18 14:41:20,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:20,965 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 68 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:20,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 246 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:41:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-11-18 14:41:20,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1208. [2024-11-18 14:41:20,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1207 states have (on average 1.4772162386081193) internal successors, (1783), 1207 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1783 transitions. [2024-11-18 14:41:20,995 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1783 transitions. Word has length 55 [2024-11-18 14:41:20,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:20,995 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1783 transitions. [2024-11-18 14:41:20,995 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) [2024-11-18 14:41:20,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1783 transitions. [2024-11-18 14:41:20,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 14:41:20,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:20,996 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] [2024-11-18 14:41:20,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:41:20,997 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:20,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:20,997 INFO L85 PathProgramCache]: Analyzing trace with hash -223123120, now seen corresponding path program 1 times [2024-11-18 14:41:20,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:20,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714167120] [2024-11-18 14:41:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:20,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:21,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:21,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714167120] [2024-11-18 14:41:21,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714167120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:21,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:21,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:41:21,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920767469] [2024-11-18 14:41:21,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:21,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:41:21,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:21,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:41:21,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:21,060 INFO L87 Difference]: Start difference. First operand 1208 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2024-11-18 14:41:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:21,108 INFO L93 Difference]: Finished difference Result 2367 states and 3517 transitions. [2024-11-18 14:41:21,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:41:21,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 [2024-11-18 14:41:21,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:21,116 INFO L225 Difference]: With dead ends: 2367 [2024-11-18 14:41:21,116 INFO L226 Difference]: Without dead ends: 1708 [2024-11-18 14:41:21,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:21,118 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 69 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:21,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 255 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:41:21,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2024-11-18 14:41:21,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1706. [2024-11-18 14:41:21,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1705 states have (on average 1.4645161290322581) internal successors, (2497), 1705 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2497 transitions. [2024-11-18 14:41:21,165 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2497 transitions. Word has length 56 [2024-11-18 14:41:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:21,165 INFO L471 AbstractCegarLoop]: Abstraction has 1706 states and 2497 transitions. [2024-11-18 14:41:21,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2024-11-18 14:41:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2497 transitions. [2024-11-18 14:41:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-18 14:41:21,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:21,168 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:41:21,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:41:21,168 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:21,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash 53976900, now seen corresponding path program 1 times [2024-11-18 14:41:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:21,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579087645] [2024-11-18 14:41:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:21,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 14:41:21,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:21,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579087645] [2024-11-18 14:41:21,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579087645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:21,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:21,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:41:21,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419538525] [2024-11-18 14:41:21,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:21,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:41:21,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:21,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:41:21,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:41:21,364 INFO L87 Difference]: Start difference. First operand 1706 states and 2497 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:21,493 INFO L93 Difference]: Finished difference Result 4812 states and 7146 transitions. [2024-11-18 14:41:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:41:21,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-18 14:41:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:21,507 INFO L225 Difference]: With dead ends: 4812 [2024-11-18 14:41:21,507 INFO L226 Difference]: Without dead ends: 3962 [2024-11-18 14:41:21,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:41:21,510 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 556 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:21,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 599 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:41:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2024-11-18 14:41:21,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 2530. [2024-11-18 14:41:21,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2529 states have (on average 1.4665875840253064) internal successors, (3709), 2529 states have internal predecessors, (3709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 3709 transitions. [2024-11-18 14:41:21,590 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 3709 transitions. Word has length 78 [2024-11-18 14:41:21,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:21,591 INFO L471 AbstractCegarLoop]: Abstraction has 2530 states and 3709 transitions. [2024-11-18 14:41:21,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:21,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 3709 transitions. [2024-11-18 14:41:21,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-18 14:41:21,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:21,593 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, 1] [2024-11-18 14:41:21,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:41:21,593 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:21,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:21,593 INFO L85 PathProgramCache]: Analyzing trace with hash -852456349, now seen corresponding path program 1 times [2024-11-18 14:41:21,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:21,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570949694] [2024-11-18 14:41:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:21,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:41:21,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:21,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570949694] [2024-11-18 14:41:21,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570949694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:21,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:21,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:41:21,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554538760] [2024-11-18 14:41:21,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:21,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:41:21,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:21,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:41:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:41:21,722 INFO L87 Difference]: Start difference. First operand 2530 states and 3709 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:21,883 INFO L93 Difference]: Finished difference Result 5636 states and 8358 transitions. [2024-11-18 14:41:21,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:41:21,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 78 [2024-11-18 14:41:21,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:21,900 INFO L225 Difference]: With dead ends: 5636 [2024-11-18 14:41:21,901 INFO L226 Difference]: Without dead ends: 4786 [2024-11-18 14:41:21,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:41:21,904 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 498 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:21,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 652 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:41:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2024-11-18 14:41:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 3354. [2024-11-18 14:41:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3353 states have (on average 1.4676409185803758) internal successors, (4921), 3353 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4921 transitions. [2024-11-18 14:41:22,009 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4921 transitions. Word has length 78 [2024-11-18 14:41:22,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:22,009 INFO L471 AbstractCegarLoop]: Abstraction has 3354 states and 4921 transitions. [2024-11-18 14:41:22,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:22,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4921 transitions. [2024-11-18 14:41:22,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-18 14:41:22,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:22,011 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, 1] [2024-11-18 14:41:22,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:41:22,012 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:22,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2085340995, now seen corresponding path program 1 times [2024-11-18 14:41:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:22,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74434975] [2024-11-18 14:41:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:22,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:41:22,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:22,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74434975] [2024-11-18 14:41:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74434975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:22,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:22,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:41:22,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200283757] [2024-11-18 14:41:22,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:22,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:41:22,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:41:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:41:22,191 INFO L87 Difference]: Start difference. First operand 3354 states and 4921 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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) [2024-11-18 14:41:22,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:22,373 INFO L93 Difference]: Finished difference Result 6460 states and 9570 transitions. [2024-11-18 14:41:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:41:22,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 78 [2024-11-18 14:41:22,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:22,392 INFO L225 Difference]: With dead ends: 6460 [2024-11-18 14:41:22,393 INFO L226 Difference]: Without dead ends: 5610 [2024-11-18 14:41:22,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:41:22,399 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 540 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:22,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 632 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:41:22,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2024-11-18 14:41:22,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 4178. [2024-11-18 14:41:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4177 states have (on average 1.4682786689011251) internal successors, (6133), 4177 states have internal predecessors, (6133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 6133 transitions. [2024-11-18 14:41:22,531 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 6133 transitions. Word has length 78 [2024-11-18 14:41:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:22,531 INFO L471 AbstractCegarLoop]: Abstraction has 4178 states and 6133 transitions. [2024-11-18 14:41:22,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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) [2024-11-18 14:41:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 6133 transitions. [2024-11-18 14:41:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 14:41:22,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:22,533 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, 1] [2024-11-18 14:41:22,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:41:22,533 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:22,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash 760016253, now seen corresponding path program 1 times [2024-11-18 14:41:22,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:22,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118054716] [2024-11-18 14:41:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:22,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:22,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:22,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118054716] [2024-11-18 14:41:22,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118054716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:22,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:22,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:41:22,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367334225] [2024-11-18 14:41:22,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:22,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:41:22,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:22,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:41:22,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:22,653 INFO L87 Difference]: Start difference. First operand 4178 states and 6133 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) [2024-11-18 14:41:22,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:22,741 INFO L93 Difference]: Finished difference Result 8326 states and 12235 transitions. [2024-11-18 14:41:22,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:41:22,742 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 [2024-11-18 14:41:22,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:22,757 INFO L225 Difference]: With dead ends: 8326 [2024-11-18 14:41:22,757 INFO L226 Difference]: Without dead ends: 4180 [2024-11-18 14:41:22,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:22,763 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 55 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:22,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 246 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:41:22,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2024-11-18 14:41:22,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 4178. [2024-11-18 14:41:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4177 states have (on average 1.453914292554465) internal successors, (6073), 4177 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 6073 transitions. [2024-11-18 14:41:22,882 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 6073 transitions. Word has length 79 [2024-11-18 14:41:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:22,882 INFO L471 AbstractCegarLoop]: Abstraction has 4178 states and 6073 transitions. [2024-11-18 14:41:22,882 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) [2024-11-18 14:41:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 6073 transitions. [2024-11-18 14:41:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 14:41:22,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:22,884 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] [2024-11-18 14:41:22,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:41:22,884 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:22,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:22,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2135446276, now seen corresponding path program 1 times [2024-11-18 14:41:22,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:22,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746484045] [2024-11-18 14:41:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:23,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:23,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746484045] [2024-11-18 14:41:23,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746484045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:23,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:23,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:41:23,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053245443] [2024-11-18 14:41:23,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:23,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:41:23,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:23,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:41:23,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:23,009 INFO L87 Difference]: Start difference. First operand 4178 states and 6073 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) [2024-11-18 14:41:23,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:23,059 INFO L93 Difference]: Finished difference Result 6254 states and 9095 transitions. [2024-11-18 14:41:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:41:23,060 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 [2024-11-18 14:41:23,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:23,067 INFO L225 Difference]: With dead ends: 6254 [2024-11-18 14:41:23,067 INFO L226 Difference]: Without dead ends: 2108 [2024-11-18 14:41:23,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:41:23,073 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 49 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:23,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 227 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:41:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2024-11-18 14:41:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2106. [2024-11-18 14:41:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2105 states have (on average 1.436104513064133) internal successors, (3023), 2105 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3023 transitions. [2024-11-18 14:41:23,129 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3023 transitions. Word has length 79 [2024-11-18 14:41:23,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:23,129 INFO L471 AbstractCegarLoop]: Abstraction has 2106 states and 3023 transitions. [2024-11-18 14:41:23,130 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) [2024-11-18 14:41:23,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3023 transitions. [2024-11-18 14:41:23,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 14:41:23,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:23,131 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] [2024-11-18 14:41:23,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:41:23,131 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:23,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:23,132 INFO L85 PathProgramCache]: Analyzing trace with hash 674497531, now seen corresponding path program 1 times [2024-11-18 14:41:23,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:23,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120122570] [2024-11-18 14:41:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:23,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:24,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120122570] [2024-11-18 14:41:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120122570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:41:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181664062] [2024-11-18 14:41:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:24,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:41:24,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:41:24,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:41:24,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:41:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:25,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 14:41:25,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:41:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:25,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:41:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181664062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:41:26,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:41:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 28 [2024-11-18 14:41:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353108771] [2024-11-18 14:41:26,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:41:26,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 14:41:26,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 14:41:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:41:26,601 INFO L87 Difference]: Start difference. First operand 2106 states and 3023 transitions. Second operand has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:40,140 INFO L93 Difference]: Finished difference Result 30562 states and 43692 transitions. [2024-11-18 14:41:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2024-11-18 14:41:40,141 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 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 [2024-11-18 14:41:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:40,223 INFO L225 Difference]: With dead ends: 30562 [2024-11-18 14:41:40,223 INFO L226 Difference]: Without dead ends: 28488 [2024-11-18 14:41:40,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19992 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=7100, Invalid=41520, Unknown=0, NotChecked=0, Total=48620 [2024-11-18 14:41:40,247 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 8542 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8542 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:40,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8542 Valid, 1581 Invalid, 2193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 14:41:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28488 states. [2024-11-18 14:41:40,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28488 to 21676. [2024-11-18 14:41:40,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21676 states, 21675 states have (on average 1.4050288350634372) internal successors, (30454), 21675 states have internal predecessors, (30454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21676 states to 21676 states and 30454 transitions. [2024-11-18 14:41:41,035 INFO L78 Accepts]: Start accepts. Automaton has 21676 states and 30454 transitions. Word has length 79 [2024-11-18 14:41:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:41,035 INFO L471 AbstractCegarLoop]: Abstraction has 21676 states and 30454 transitions. [2024-11-18 14:41:41,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:41,036 INFO L276 IsEmpty]: Start isEmpty. Operand 21676 states and 30454 transitions. [2024-11-18 14:41:41,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 14:41:41,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:41,038 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:41:41,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:41:41,238 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,SelfDestructingSolverStorable14 [2024-11-18 14:41:41,239 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:41,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:41,239 INFO L85 PathProgramCache]: Analyzing trace with hash -163654874, now seen corresponding path program 1 times [2024-11-18 14:41:41,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:41,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651680069] [2024-11-18 14:41:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:41,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 14:41:41,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:41,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651680069] [2024-11-18 14:41:41,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651680069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:41:41,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:41:41,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:41:41,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103870223] [2024-11-18 14:41:41,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:41:41,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:41:41,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:41,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:41:41,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:41:41,459 INFO L87 Difference]: Start difference. First operand 21676 states and 30454 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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) [2024-11-18 14:41:42,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:41:42,173 INFO L93 Difference]: Finished difference Result 39509 states and 55914 transitions. [2024-11-18 14:41:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:41:42,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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 80 [2024-11-18 14:41:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:41:42,248 INFO L225 Difference]: With dead ends: 39509 [2024-11-18 14:41:42,248 INFO L226 Difference]: Without dead ends: 35007 [2024-11-18 14:41:42,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:41:42,264 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 462 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:41:42,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 646 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:41:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35007 states. [2024-11-18 14:41:43,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35007 to 25986. [2024-11-18 14:41:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25986 states, 25985 states have (on average 1.4040792765056764) internal successors, (36485), 25985 states have internal predecessors, (36485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:41:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25986 states to 25986 states and 36485 transitions. [2024-11-18 14:41:43,089 INFO L78 Accepts]: Start accepts. Automaton has 25986 states and 36485 transitions. Word has length 80 [2024-11-18 14:41:43,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:41:43,089 INFO L471 AbstractCegarLoop]: Abstraction has 25986 states and 36485 transitions. [2024-11-18 14:41:43,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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) [2024-11-18 14:41:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 25986 states and 36485 transitions. [2024-11-18 14:41:43,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-18 14:41:43,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:41:43,091 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:41:43,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:41:43,092 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:41:43,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:41:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash -269357657, now seen corresponding path program 1 times [2024-11-18 14:41:43,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:41:43,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360040725] [2024-11-18 14:41:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:43,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:41:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:44,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:41:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360040725] [2024-11-18 14:41:44,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360040725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:41:44,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149625423] [2024-11-18 14:41:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:41:44,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:41:44,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:41:44,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:41:44,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:41:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:41:44,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-18 14:41:44,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:41:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:45,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:41:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:41:47,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149625423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:41:47,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:41:47,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 35 [2024-11-18 14:41:47,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975771494] [2024-11-18 14:41:47,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:41:47,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 14:41:47,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:41:47,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 14:41:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1030, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 14:41:47,270 INFO L87 Difference]: Start difference. First operand 25986 states and 36485 transitions. Second operand has 35 states, 35 states have (on average 6.371428571428571) internal successors, (223), 35 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:42:10,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:42:10,214 INFO L93 Difference]: Finished difference Result 271505 states and 379733 transitions. [2024-11-18 14:42:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 396 states. [2024-11-18 14:42:10,215 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.371428571428571) internal successors, (223), 35 states have internal predecessors, (223), 0 states have call successors, (0), 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 [2024-11-18 14:42:10,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:42:10,762 INFO L225 Difference]: With dead ends: 271505 [2024-11-18 14:42:10,762 INFO L226 Difference]: Without dead ends: 245553 [2024-11-18 14:42:10,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82230 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=20054, Invalid=163558, Unknown=0, NotChecked=0, Total=183612 [2024-11-18 14:42:10,867 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 10499 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 4871 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10499 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 5125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 4871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:42:10,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10499 Valid, 3983 Invalid, 5125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 4871 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 14:42:11,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245553 states. [2024-11-18 14:42:15,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245553 to 97606. [2024-11-18 14:42:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97606 states, 97605 states have (on average 1.382295988934993) internal successors, (134919), 97605 states have internal predecessors, (134919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:42:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97606 states to 97606 states and 134919 transitions. [2024-11-18 14:42:15,543 INFO L78 Accepts]: Start accepts. Automaton has 97606 states and 134919 transitions. Word has length 83 [2024-11-18 14:42:15,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:42:15,544 INFO L471 AbstractCegarLoop]: Abstraction has 97606 states and 134919 transitions. [2024-11-18 14:42:15,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.371428571428571) internal successors, (223), 35 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:42:15,544 INFO L276 IsEmpty]: Start isEmpty. Operand 97606 states and 134919 transitions. [2024-11-18 14:42:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-18 14:42:15,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:42:15,547 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:42:15,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:42:15,747 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,SelfDestructingSolverStorable16 [2024-11-18 14:42:15,748 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:42:15,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:42:15,748 INFO L85 PathProgramCache]: Analyzing trace with hash -244055323, now seen corresponding path program 1 times [2024-11-18 14:42:15,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:42:15,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390752167] [2024-11-18 14:42:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:42:15,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:42:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:42:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:42:16,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:42:16,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390752167] [2024-11-18 14:42:16,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390752167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:42:16,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541437543] [2024-11-18 14:42:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:42:16,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:42:16,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:42:16,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:42:16,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:42:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:42:16,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-18 14:42:16,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:42:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:42:19,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:42:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:42:25,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541437543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:42:25,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:42:25,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 22, 26] total 54 [2024-11-18 14:42:25,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135916831] [2024-11-18 14:42:25,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:42:25,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-18 14:42:25,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:42:25,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-18 14:42:25,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=2458, Unknown=0, NotChecked=0, Total=2862 [2024-11-18 14:42:25,150 INFO L87 Difference]: Start difference. First operand 97606 states and 134919 transitions. Second operand has 54 states, 54 states have (on average 4.2592592592592595) internal successors, (230), 54 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)