./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.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 ab4ce27c037a23a1acb050e4e5e47861985f2a45717e88488eff45dc32b3cf64 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 22:28:20,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 22:28:20,833 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 22:28:20,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 22:28:20,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 22:28:20,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 22:28:20,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 22:28:20,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 22:28:20,855 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 22:28:20,855 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 22:28:20,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 22:28:20,856 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 22:28:20,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 22:28:20,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 22:28:20,857 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 22:28:20,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 22:28:20,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 22:28:20,857 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 22:28:20,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 22:28:20,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 22:28:20,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 22:28:20,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 22:28:20,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 22:28:20,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 22:28:20,861 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 22:28:20,861 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 22:28:20,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 22:28:20,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 22:28:20,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 22:28:20,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 22:28:20,862 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 22:28:20,862 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 22:28:20,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:28:20,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 22:28:20,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 22:28:20,863 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 22:28:20,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 22:28:20,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 22:28:20,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 22:28:20,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 22:28:20,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 22:28:20,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 22:28:20,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab4ce27c037a23a1acb050e4e5e47861985f2a45717e88488eff45dc32b3cf64 [2024-11-19 22:28:21,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 22:28:21,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 22:28:21,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 22:28:21,090 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 22:28:21,091 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 22:28:21,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2024-11-19 22:28:22,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 22:28:22,562 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 22:28:22,562 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2024-11-19 22:28:22,577 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f5533f1/6a0f764c35e9482c8ec8380e1db68d1f/FLAGe6aefd4ab [2024-11-19 22:28:22,929 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f5533f1/6a0f764c35e9482c8ec8380e1db68d1f [2024-11-19 22:28:22,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 22:28:22,931 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 22:28:22,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 22:28:22,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 22:28:22,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 22:28:22,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:28:22" (1/1) ... [2024-11-19 22:28:22,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b75724f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:22, skipping insertion in model container [2024-11-19 22:28:22,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:28:22" (1/1) ... [2024-11-19 22:28:22,969 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 22:28:23,184 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.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2024-11-19 22:28:23,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:28:23,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 22:28:23,235 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.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2024-11-19 22:28:23,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:28:23,253 INFO L204 MainTranslator]: Completed translation [2024-11-19 22:28:23,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23 WrapperNode [2024-11-19 22:28:23,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 22:28:23,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 22:28:23,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 22:28:23,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 22:28:23,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,292 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 381 [2024-11-19 22:28:23,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 22:28:23,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 22:28:23,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 22:28:23,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 22:28:23,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,304 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,315 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 22:28:23,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,315 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,325 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 22:28:23,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 22:28:23,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 22:28:23,329 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 22:28:23,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (1/1) ... [2024-11-19 22:28:23,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:28:23,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:28:23,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 22:28:23,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 22:28:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 22:28:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 22:28:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 22:28:23,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 22:28:23,477 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 22:28:23,478 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 22:28:23,861 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-19 22:28:23,862 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 22:28:23,873 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 22:28:23,873 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 22:28:23,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:28:23 BoogieIcfgContainer [2024-11-19 22:28:23,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 22:28:23,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 22:28:23,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 22:28:23,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 22:28:23,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:28:22" (1/3) ... [2024-11-19 22:28:23,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bd2f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:28:23, skipping insertion in model container [2024-11-19 22:28:23,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:28:23" (2/3) ... [2024-11-19 22:28:23,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bd2f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:28:23, skipping insertion in model container [2024-11-19 22:28:23,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:28:23" (3/3) ... [2024-11-19 22:28:23,880 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2024-11-19 22:28:23,892 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 22:28:23,892 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 22:28:23,939 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 22:28:23,943 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;@64c4028b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 22:28:23,944 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 22:28:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 101 states have (on average 1.7425742574257426) internal successors, (176), 102 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:23,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 22:28:23,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:23,953 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] [2024-11-19 22:28:23,954 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:23,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:23,957 INFO L85 PathProgramCache]: Analyzing trace with hash -587905737, now seen corresponding path program 1 times [2024-11-19 22:28:23,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:23,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619164032] [2024-11-19 22:28:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:23,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:24,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:24,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619164032] [2024-11-19 22:28:24,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619164032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:24,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:24,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 22:28:24,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410050454] [2024-11-19 22:28:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:24,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 22:28:24,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:24,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 22:28:24,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 22:28:24,239 INFO L87 Difference]: Start difference. First operand has 103 states, 101 states have (on average 1.7425742574257426) internal successors, (176), 102 states have internal predecessors, (176), 0 states have call successors, (0), 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 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:24,258 INFO L93 Difference]: Finished difference Result 165 states and 279 transitions. [2024-11-19 22:28:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 22:28:24,260 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2024-11-19 22:28:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:24,266 INFO L225 Difference]: With dead ends: 165 [2024-11-19 22:28:24,266 INFO L226 Difference]: Without dead ends: 99 [2024-11-19 22:28:24,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 22:28:24,270 INFO L432 NwaCegarLoop]: 169 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, 169 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:28:24,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-19 22:28:24,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-19 22:28:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.7244897959183674) internal successors, (169), 98 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 169 transitions. [2024-11-19 22:28:24,295 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 169 transitions. Word has length 33 [2024-11-19 22:28:24,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:24,295 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 169 transitions. [2024-11-19 22:28:24,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 169 transitions. [2024-11-19 22:28:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 22:28:24,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:24,297 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] [2024-11-19 22:28:24,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 22:28:24,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:24,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:24,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1097378827, now seen corresponding path program 1 times [2024-11-19 22:28:24,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:24,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270881832] [2024-11-19 22:28:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:24,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:24,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:24,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270881832] [2024-11-19 22:28:24,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270881832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:24,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:24,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:28:24,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169046305] [2024-11-19 22:28:24,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:24,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:28:24,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:28:24,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:28:24,525 INFO L87 Difference]: Start difference. First operand 99 states and 169 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:24,598 INFO L93 Difference]: Finished difference Result 164 states and 272 transitions. [2024-11-19 22:28:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:28:24,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2024-11-19 22:28:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:24,600 INFO L225 Difference]: With dead ends: 164 [2024-11-19 22:28:24,600 INFO L226 Difference]: Without dead ends: 99 [2024-11-19 22:28:24,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:28:24,601 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:28:24,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 631 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:28:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-19 22:28:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-19 22:28:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3979591836734695) internal successors, (137), 98 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2024-11-19 22:28:24,608 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 33 [2024-11-19 22:28:24,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:24,608 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2024-11-19 22:28:24,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2024-11-19 22:28:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:28:24,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:24,611 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:24,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 22:28:24,611 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:24,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1293258186, now seen corresponding path program 1 times [2024-11-19 22:28:24,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:24,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415116668] [2024-11-19 22:28:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:24,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:24,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:24,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415116668] [2024-11-19 22:28:24,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415116668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:24,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:24,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:28:24,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123376308] [2024-11-19 22:28:24,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:24,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:28:24,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:24,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:28:24,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:24,727 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:24,760 INFO L93 Difference]: Finished difference Result 213 states and 321 transitions. [2024-11-19 22:28:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:28:24,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-19 22:28:24,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:24,765 INFO L225 Difference]: With dead ends: 213 [2024-11-19 22:28:24,765 INFO L226 Difference]: Without dead ends: 152 [2024-11-19 22:28:24,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:24,766 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 79 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 287 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 [2024-11-19 22:28:24,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 287 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-19 22:28:24,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2024-11-19 22:28:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.476510067114094) internal successors, (220), 149 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 220 transitions. [2024-11-19 22:28:24,776 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 220 transitions. Word has length 64 [2024-11-19 22:28:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:24,777 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 220 transitions. [2024-11-19 22:28:24,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:24,777 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 220 transitions. [2024-11-19 22:28:24,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:28:24,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:24,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:24,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 22:28:24,779 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:24,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:24,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1823278453, now seen corresponding path program 1 times [2024-11-19 22:28:24,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:24,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425427151] [2024-11-19 22:28:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:24,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:24,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:24,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425427151] [2024-11-19 22:28:24,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425427151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:24,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:24,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:28:24,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433618755] [2024-11-19 22:28:24,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:24,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:28:24,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:28:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:28:24,975 INFO L87 Difference]: Start difference. First operand 150 states and 220 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:25,115 INFO L93 Difference]: Finished difference Result 822 states and 1312 transitions. [2024-11-19 22:28:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:28:25,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-19 22:28:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:25,121 INFO L225 Difference]: With dead ends: 822 [2024-11-19 22:28:25,121 INFO L226 Difference]: Without dead ends: 710 [2024-11-19 22:28:25,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:28:25,122 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 1314 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:28:25,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 856 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:28:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-19 22:28:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 260. [2024-11-19 22:28:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.5328185328185329) internal successors, (397), 259 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 397 transitions. [2024-11-19 22:28:25,139 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 397 transitions. Word has length 64 [2024-11-19 22:28:25,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:25,139 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 397 transitions. [2024-11-19 22:28:25,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 397 transitions. [2024-11-19 22:28:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 22:28:25,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:25,141 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:25,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 22:28:25,141 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:25,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1070380477, now seen corresponding path program 1 times [2024-11-19 22:28:25,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:25,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411802327] [2024-11-19 22:28:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:25,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:25,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:25,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411802327] [2024-11-19 22:28:25,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411802327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:25,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:25,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 22:28:25,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034701225] [2024-11-19 22:28:25,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:25,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 22:28:25,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:25,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 22:28:25,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 22:28:25,444 INFO L87 Difference]: Start difference. First operand 260 states and 397 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2024-11-19 22:28:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:25,482 INFO L93 Difference]: Finished difference Result 274 states and 414 transitions. [2024-11-19 22:28:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 22:28:25,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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 65 [2024-11-19 22:28:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:25,483 INFO L225 Difference]: With dead ends: 274 [2024-11-19 22:28:25,485 INFO L226 Difference]: Without dead ends: 272 [2024-11-19 22:28:25,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 22:28:25,486 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 905 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 [2024-11-19 22:28:25,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 905 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:25,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-19 22:28:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-11-19 22:28:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.5092250922509225) internal successors, (409), 271 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 409 transitions. [2024-11-19 22:28:25,502 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 409 transitions. Word has length 65 [2024-11-19 22:28:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:25,503 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 409 transitions. [2024-11-19 22:28:25,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2024-11-19 22:28:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 409 transitions. [2024-11-19 22:28:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-19 22:28:25,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:25,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:25,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 22:28:25,507 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:25,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:25,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1230522211, now seen corresponding path program 1 times [2024-11-19 22:28:25,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:25,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021695748] [2024-11-19 22:28:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:25,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:25,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:25,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021695748] [2024-11-19 22:28:25,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021695748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:25,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:25,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:28:25,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429785554] [2024-11-19 22:28:25,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:25,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:28:25,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:25,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:28:25,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:25,596 INFO L87 Difference]: Start difference. First operand 272 states and 409 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:25,615 INFO L93 Difference]: Finished difference Result 710 states and 1101 transitions. [2024-11-19 22:28:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:28:25,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-19 22:28:25,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:25,617 INFO L225 Difference]: With dead ends: 710 [2024-11-19 22:28:25,618 INFO L226 Difference]: Without dead ends: 476 [2024-11-19 22:28:25,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:25,619 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 63 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:28:25,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 228 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-19 22:28:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 470. [2024-11-19 22:28:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.5287846481876333) internal successors, (717), 469 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 717 transitions. [2024-11-19 22:28:25,633 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 717 transitions. Word has length 66 [2024-11-19 22:28:25,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:25,636 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 717 transitions. [2024-11-19 22:28:25,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,636 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 717 transitions. [2024-11-19 22:28:25,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 22:28:25,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:25,637 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:25,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 22:28:25,637 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:25,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1542627652, now seen corresponding path program 1 times [2024-11-19 22:28:25,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:25,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785961161] [2024-11-19 22:28:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:25,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:25,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:25,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785961161] [2024-11-19 22:28:25,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785961161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:25,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:25,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:28:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219648539] [2024-11-19 22:28:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:25,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:28:25,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:25,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:28:25,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:25,693 INFO L87 Difference]: Start difference. First operand 470 states and 717 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:25,710 INFO L93 Difference]: Finished difference Result 1270 states and 1963 transitions. [2024-11-19 22:28:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:28:25,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-19 22:28:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:25,713 INFO L225 Difference]: With dead ends: 1270 [2024-11-19 22:28:25,713 INFO L226 Difference]: Without dead ends: 838 [2024-11-19 22:28:25,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:25,715 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 71 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 272 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 [2024-11-19 22:28:25,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 272 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:25,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-19 22:28:25,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 836. [2024-11-19 22:28:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.526946107784431) internal successors, (1275), 835 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1275 transitions. [2024-11-19 22:28:25,732 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1275 transitions. Word has length 67 [2024-11-19 22:28:25,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:25,732 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1275 transitions. [2024-11-19 22:28:25,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,733 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1275 transitions. [2024-11-19 22:28:25,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 22:28:25,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:25,734 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:25,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 22:28:25,734 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:25,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash 951650716, now seen corresponding path program 1 times [2024-11-19 22:28:25,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:25,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303510171] [2024-11-19 22:28:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:25,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:25,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303510171] [2024-11-19 22:28:25,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303510171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:25,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:25,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:28:25,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810798072] [2024-11-19 22:28:25,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:25,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:28:25,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:25,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:28:25,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:25,791 INFO L87 Difference]: Start difference. First operand 836 states and 1275 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:25,823 INFO L93 Difference]: Finished difference Result 2304 states and 3525 transitions. [2024-11-19 22:28:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:28:25,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-19 22:28:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:25,827 INFO L225 Difference]: With dead ends: 2304 [2024-11-19 22:28:25,827 INFO L226 Difference]: Without dead ends: 1506 [2024-11-19 22:28:25,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:25,829 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 75 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 285 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 [2024-11-19 22:28:25,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 285 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-19 22:28:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1504. [2024-11-19 22:28:25,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 1.5109780439121756) internal successors, (2271), 1503 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2271 transitions. [2024-11-19 22:28:25,864 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2271 transitions. Word has length 67 [2024-11-19 22:28:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:25,864 INFO L471 AbstractCegarLoop]: Abstraction has 1504 states and 2271 transitions. [2024-11-19 22:28:25,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2271 transitions. [2024-11-19 22:28:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 22:28:25,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:25,866 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:25,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 22:28:25,866 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:25,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:25,867 INFO L85 PathProgramCache]: Analyzing trace with hash -820572324, now seen corresponding path program 1 times [2024-11-19 22:28:25,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:25,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516849085] [2024-11-19 22:28:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:25,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:25,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:25,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516849085] [2024-11-19 22:28:25,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516849085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:25,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:25,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:28:25,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659251163] [2024-11-19 22:28:25,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:25,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:28:25,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:25,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:28:25,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:25,922 INFO L87 Difference]: Start difference. First operand 1504 states and 2271 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:25,970 INFO L93 Difference]: Finished difference Result 4180 states and 6289 transitions. [2024-11-19 22:28:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:28:25,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-19 22:28:25,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:25,978 INFO L225 Difference]: With dead ends: 4180 [2024-11-19 22:28:25,978 INFO L226 Difference]: Without dead ends: 2714 [2024-11-19 22:28:25,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:25,983 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 83 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 301 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 [2024-11-19 22:28:25,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 301 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:25,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2024-11-19 22:28:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 2712. [2024-11-19 22:28:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2711 states have (on average 1.483954260420509) internal successors, (4023), 2711 states have internal predecessors, (4023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 4023 transitions. [2024-11-19 22:28:26,035 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 4023 transitions. Word has length 67 [2024-11-19 22:28:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:26,035 INFO L471 AbstractCegarLoop]: Abstraction has 2712 states and 4023 transitions. [2024-11-19 22:28:26,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 4023 transitions. [2024-11-19 22:28:26,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 22:28:26,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:26,037 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:26,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 22:28:26,037 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:26,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:26,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1606582850, now seen corresponding path program 1 times [2024-11-19 22:28:26,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:26,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272733367] [2024-11-19 22:28:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:26,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:26,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:26,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272733367] [2024-11-19 22:28:26,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272733367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:26,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:26,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:28:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114070539] [2024-11-19 22:28:26,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:26,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:28:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:26,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:28:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:26,083 INFO L87 Difference]: Start difference. First operand 2712 states and 4023 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:26,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:26,154 INFO L93 Difference]: Finished difference Result 5375 states and 8029 transitions. [2024-11-19 22:28:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:28:26,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-11-19 22:28:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:26,169 INFO L225 Difference]: With dead ends: 5375 [2024-11-19 22:28:26,169 INFO L226 Difference]: Without dead ends: 3900 [2024-11-19 22:28:26,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:26,172 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 84 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 312 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 [2024-11-19 22:28:26,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 312 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:26,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3900 states. [2024-11-19 22:28:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3900 to 3898. [2024-11-19 22:28:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 3897 states have (on average 1.4762637926610214) internal successors, (5753), 3897 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5753 transitions. [2024-11-19 22:28:26,268 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5753 transitions. Word has length 68 [2024-11-19 22:28:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:26,268 INFO L471 AbstractCegarLoop]: Abstraction has 3898 states and 5753 transitions. [2024-11-19 22:28:26,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5753 transitions. [2024-11-19 22:28:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-19 22:28:26,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:26,271 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:26,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 22:28:26,271 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:26,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:26,274 INFO L85 PathProgramCache]: Analyzing trace with hash 539303600, now seen corresponding path program 1 times [2024-11-19 22:28:26,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:26,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820665728] [2024-11-19 22:28:26,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:26,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 22:28:26,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:26,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820665728] [2024-11-19 22:28:26,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820665728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:26,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:26,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:28:26,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668584382] [2024-11-19 22:28:26,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:26,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:28:26,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:26,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:28:26,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:28:26,404 INFO L87 Difference]: Start difference. First operand 3898 states and 5753 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:26,593 INFO L93 Difference]: Finished difference Result 12998 states and 19423 transitions. [2024-11-19 22:28:26,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:28:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 94 [2024-11-19 22:28:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:26,622 INFO L225 Difference]: With dead ends: 12998 [2024-11-19 22:28:26,622 INFO L226 Difference]: Without dead ends: 11044 [2024-11-19 22:28:26,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:28:26,628 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 976 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:28:26,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 881 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:26,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2024-11-19 22:28:26,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 5802. [2024-11-19 22:28:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5802 states, 5801 states have (on average 1.47715911049819) internal successors, (8569), 5801 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:26,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 8569 transitions. [2024-11-19 22:28:26,778 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 8569 transitions. Word has length 94 [2024-11-19 22:28:26,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:26,778 INFO L471 AbstractCegarLoop]: Abstraction has 5802 states and 8569 transitions. [2024-11-19 22:28:26,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:26,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 8569 transitions. [2024-11-19 22:28:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-19 22:28:26,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:26,801 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:26,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 22:28:26,801 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:26,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:26,802 INFO L85 PathProgramCache]: Analyzing trace with hash -162829999, now seen corresponding path program 1 times [2024-11-19 22:28:26,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:26,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27049674] [2024-11-19 22:28:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:26,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 22:28:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27049674] [2024-11-19 22:28:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27049674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:26,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:26,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:28:26,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002657217] [2024-11-19 22:28:26,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:26,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:28:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:26,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:28:26,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:28:26,919 INFO L87 Difference]: Start difference. First operand 5802 states and 8569 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:27,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:27,147 INFO L93 Difference]: Finished difference Result 14902 states and 22239 transitions. [2024-11-19 22:28:27,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:28:27,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 94 [2024-11-19 22:28:27,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:27,172 INFO L225 Difference]: With dead ends: 14902 [2024-11-19 22:28:27,172 INFO L226 Difference]: Without dead ends: 12948 [2024-11-19 22:28:27,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:28:27,176 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 941 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:28:27,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 907 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:28:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12948 states. [2024-11-19 22:28:27,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12948 to 7706. [2024-11-19 22:28:27,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7706 states, 7705 states have (on average 1.4776119402985075) internal successors, (11385), 7705 states have internal predecessors, (11385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:27,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7706 states to 7706 states and 11385 transitions. [2024-11-19 22:28:27,347 INFO L78 Accepts]: Start accepts. Automaton has 7706 states and 11385 transitions. Word has length 94 [2024-11-19 22:28:27,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:27,348 INFO L471 AbstractCegarLoop]: Abstraction has 7706 states and 11385 transitions. [2024-11-19 22:28:27,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:27,348 INFO L276 IsEmpty]: Start isEmpty. Operand 7706 states and 11385 transitions. [2024-11-19 22:28:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-19 22:28:27,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:27,351 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:27,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 22:28:27,351 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:27,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1963518927, now seen corresponding path program 1 times [2024-11-19 22:28:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:27,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788429268] [2024-11-19 22:28:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:27,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 22:28:27,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:27,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788429268] [2024-11-19 22:28:27,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788429268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:27,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:27,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:28:27,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146777246] [2024-11-19 22:28:27,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:27,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:28:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:27,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:28:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:28:27,511 INFO L87 Difference]: Start difference. First operand 7706 states and 11385 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:27,732 INFO L93 Difference]: Finished difference Result 16806 states and 25055 transitions. [2024-11-19 22:28:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:28:27,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 94 [2024-11-19 22:28:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:27,757 INFO L225 Difference]: With dead ends: 16806 [2024-11-19 22:28:27,757 INFO L226 Difference]: Without dead ends: 14852 [2024-11-19 22:28:27,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:28:27,765 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 850 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:28:27,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 970 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:28:27,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14852 states. [2024-11-19 22:28:27,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14852 to 9610. [2024-11-19 22:28:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9610 states, 9609 states have (on average 1.4778853158497243) internal successors, (14201), 9609 states have internal predecessors, (14201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 14201 transitions. [2024-11-19 22:28:28,012 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 14201 transitions. Word has length 94 [2024-11-19 22:28:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:28,012 INFO L471 AbstractCegarLoop]: Abstraction has 9610 states and 14201 transitions. [2024-11-19 22:28:28,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 14201 transitions. [2024-11-19 22:28:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-19 22:28:28,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:28,015 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:28,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 22:28:28,016 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:28,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1054180145, now seen corresponding path program 1 times [2024-11-19 22:28:28,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:28,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784001708] [2024-11-19 22:28:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:28,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 22:28:28,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:28,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784001708] [2024-11-19 22:28:28,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784001708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:28,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:28,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:28:28,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82052182] [2024-11-19 22:28:28,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:28,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:28:28,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:28:28,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:28:28,149 INFO L87 Difference]: Start difference. First operand 9610 states and 14201 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:28,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:28,395 INFO L93 Difference]: Finished difference Result 18710 states and 27871 transitions. [2024-11-19 22:28:28,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:28:28,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-19 22:28:28,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:28,422 INFO L225 Difference]: With dead ends: 18710 [2024-11-19 22:28:28,422 INFO L226 Difference]: Without dead ends: 16756 [2024-11-19 22:28:28,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:28:28,426 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 875 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:28:28,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1044 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16756 states. [2024-11-19 22:28:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16756 to 11514. [2024-11-19 22:28:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11514 states, 11513 states have (on average 1.478068270650569) internal successors, (17017), 11513 states have internal predecessors, (17017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11514 states to 11514 states and 17017 transitions. [2024-11-19 22:28:28,700 INFO L78 Accepts]: Start accepts. Automaton has 11514 states and 17017 transitions. Word has length 94 [2024-11-19 22:28:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:28,700 INFO L471 AbstractCegarLoop]: Abstraction has 11514 states and 17017 transitions. [2024-11-19 22:28:28,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 11514 states and 17017 transitions. [2024-11-19 22:28:28,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-19 22:28:28,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:28,704 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:28,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 22:28:28,705 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:28,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:28,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2064142835, now seen corresponding path program 1 times [2024-11-19 22:28:28,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222295753] [2024-11-19 22:28:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:28,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:28,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222295753] [2024-11-19 22:28:28,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222295753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:28,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:28,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:28:28,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251609376] [2024-11-19 22:28:28,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:28,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:28:28,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:28,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:28:28,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:28,817 INFO L87 Difference]: Start difference. First operand 11514 states and 17017 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:28,995 INFO L93 Difference]: Finished difference Result 22990 states and 33995 transitions. [2024-11-19 22:28:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:28:28,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-11-19 22:28:28,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:29,014 INFO L225 Difference]: With dead ends: 22990 [2024-11-19 22:28:29,014 INFO L226 Difference]: Without dead ends: 11516 [2024-11-19 22:28:29,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:29,029 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 66 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 300 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 [2024-11-19 22:28:29,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 300 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:29,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11516 states. [2024-11-19 22:28:29,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11516 to 11514. [2024-11-19 22:28:29,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11514 states, 11513 states have (on average 1.4655606705463389) internal successors, (16873), 11513 states have internal predecessors, (16873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11514 states to 11514 states and 16873 transitions. [2024-11-19 22:28:29,318 INFO L78 Accepts]: Start accepts. Automaton has 11514 states and 16873 transitions. Word has length 95 [2024-11-19 22:28:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:29,318 INFO L471 AbstractCegarLoop]: Abstraction has 11514 states and 16873 transitions. [2024-11-19 22:28:29,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 11514 states and 16873 transitions. [2024-11-19 22:28:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-19 22:28:29,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:29,320 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:29,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 22:28:29,321 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:29,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:29,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1645701620, now seen corresponding path program 1 times [2024-11-19 22:28:29,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:29,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191989921] [2024-11-19 22:28:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:29,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:29,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:29,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191989921] [2024-11-19 22:28:29,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191989921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:29,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:29,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:28:29,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707075532] [2024-11-19 22:28:29,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:29,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:28:29,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:29,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:28:29,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:29,400 INFO L87 Difference]: Start difference. First operand 11514 states and 16873 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:29,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:29,485 INFO L93 Difference]: Finished difference Result 17254 states and 25291 transitions. [2024-11-19 22:28:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:28:29,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-11-19 22:28:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:29,494 INFO L225 Difference]: With dead ends: 17254 [2024-11-19 22:28:29,494 INFO L226 Difference]: Without dead ends: 5780 [2024-11-19 22:28:29,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:29,504 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 60 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 278 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 [2024-11-19 22:28:29,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 278 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:29,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2024-11-19 22:28:29,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5778. [2024-11-19 22:28:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5778 states, 5777 states have (on average 1.451445386879003) internal successors, (8385), 5777 states have internal predecessors, (8385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:29,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5778 states to 5778 states and 8385 transitions. [2024-11-19 22:28:29,644 INFO L78 Accepts]: Start accepts. Automaton has 5778 states and 8385 transitions. Word has length 95 [2024-11-19 22:28:29,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:29,644 INFO L471 AbstractCegarLoop]: Abstraction has 5778 states and 8385 transitions. [2024-11-19 22:28:29,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:29,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5778 states and 8385 transitions. [2024-11-19 22:28:29,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-19 22:28:29,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:29,645 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:29,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 22:28:29,646 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:29,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:29,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1164242187, now seen corresponding path program 1 times [2024-11-19 22:28:29,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:29,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553992646] [2024-11-19 22:28:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:29,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:29,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:29,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553992646] [2024-11-19 22:28:29,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553992646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:29,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:29,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:28:29,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139552077] [2024-11-19 22:28:29,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:29,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:28:29,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:29,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:28:29,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:29,709 INFO L87 Difference]: Start difference. First operand 5778 states and 8385 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:29,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:29,749 INFO L93 Difference]: Finished difference Result 8650 states and 12559 transitions. [2024-11-19 22:28:29,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:28:29,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-11-19 22:28:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:29,754 INFO L225 Difference]: With dead ends: 8650 [2024-11-19 22:28:29,754 INFO L226 Difference]: Without dead ends: 2912 [2024-11-19 22:28:29,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:28:29,758 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 54 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 259 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 [2024-11-19 22:28:29,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 259 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:28:29,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2024-11-19 22:28:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2910. [2024-11-19 22:28:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2909 states have (on average 1.4358886215194224) internal successors, (4177), 2909 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4177 transitions. [2024-11-19 22:28:29,796 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4177 transitions. Word has length 95 [2024-11-19 22:28:29,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:29,797 INFO L471 AbstractCegarLoop]: Abstraction has 2910 states and 4177 transitions. [2024-11-19 22:28:29,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4177 transitions. [2024-11-19 22:28:29,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-19 22:28:29,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:29,798 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:29,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 22:28:29,798 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:29,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1550490506, now seen corresponding path program 1 times [2024-11-19 22:28:29,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:29,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676902491] [2024-11-19 22:28:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:29,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:30,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:30,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676902491] [2024-11-19 22:28:30,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676902491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:28:30,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657338299] [2024-11-19 22:28:30,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:30,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:28:30,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:28:30,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:28:30,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 22:28:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:30,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 22:28:30,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:28:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:30,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:28:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:31,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657338299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:28:31,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:28:31,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2024-11-19 22:28:31,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657141429] [2024-11-19 22:28:31,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:28:31,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 22:28:31,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:31,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 22:28:31,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2024-11-19 22:28:31,571 INFO L87 Difference]: Start difference. First operand 2910 states and 4177 transitions. Second operand has 25 states, 25 states have (on average 10.96) internal successors, (274), 25 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:38,975 INFO L93 Difference]: Finished difference Result 37703 states and 53628 transitions. [2024-11-19 22:28:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-19 22:28:38,975 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.96) internal successors, (274), 25 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-19 22:28:38,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:39,024 INFO L225 Difference]: With dead ends: 37703 [2024-11-19 22:28:39,024 INFO L226 Difference]: Without dead ends: 34833 [2024-11-19 22:28:39,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3649, Invalid=14173, Unknown=0, NotChecked=0, Total=17822 [2024-11-19 22:28:39,036 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 8597 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8597 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 22:28:39,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8597 Valid, 1997 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 22:28:39,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34833 states. [2024-11-19 22:28:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34833 to 29371. [2024-11-19 22:28:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29371 states, 29370 states have (on average 1.4029281579843378) internal successors, (41204), 29370 states have internal predecessors, (41204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29371 states to 29371 states and 41204 transitions. [2024-11-19 22:28:39,726 INFO L78 Accepts]: Start accepts. Automaton has 29371 states and 41204 transitions. Word has length 95 [2024-11-19 22:28:39,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:39,726 INFO L471 AbstractCegarLoop]: Abstraction has 29371 states and 41204 transitions. [2024-11-19 22:28:39,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.96) internal successors, (274), 25 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 29371 states and 41204 transitions. [2024-11-19 22:28:39,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-19 22:28:39,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:39,728 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:39,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 22:28:39,928 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,SelfDestructingSolverStorable17 [2024-11-19 22:28:39,931 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:39,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:39,932 INFO L85 PathProgramCache]: Analyzing trace with hash 570191537, now seen corresponding path program 1 times [2024-11-19 22:28:39,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:39,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347708628] [2024-11-19 22:28:39,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:39,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 22:28:40,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:40,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347708628] [2024-11-19 22:28:40,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347708628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:28:40,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:28:40,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:28:40,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632190907] [2024-11-19 22:28:40,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:28:40,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:28:40,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:40,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:28:40,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:28:40,052 INFO L87 Difference]: Start difference. First operand 29371 states and 41204 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:41,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:41,022 INFO L93 Difference]: Finished difference Result 54650 states and 77228 transitions. [2024-11-19 22:28:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:28:41,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 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 96 [2024-11-19 22:28:41,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:41,087 INFO L225 Difference]: With dead ends: 54650 [2024-11-19 22:28:41,087 INFO L226 Difference]: Without dead ends: 49568 [2024-11-19 22:28:41,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:28:41,102 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 769 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:28:41,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1332 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:28:41,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49568 states. [2024-11-19 22:28:41,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49568 to 34258. [2024-11-19 22:28:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34258 states, 34257 states have (on average 1.4023411273608313) internal successors, (48040), 34257 states have internal predecessors, (48040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34258 states to 34258 states and 48040 transitions. [2024-11-19 22:28:41,991 INFO L78 Accepts]: Start accepts. Automaton has 34258 states and 48040 transitions. Word has length 96 [2024-11-19 22:28:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:41,991 INFO L471 AbstractCegarLoop]: Abstraction has 34258 states and 48040 transitions. [2024-11-19 22:28:41,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 34258 states and 48040 transitions. [2024-11-19 22:28:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-19 22:28:41,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:41,993 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:41,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 22:28:41,993 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:41,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:41,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1289334993, now seen corresponding path program 1 times [2024-11-19 22:28:41,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:41,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654081008] [2024-11-19 22:28:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:41,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:42,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654081008] [2024-11-19 22:28:42,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654081008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:28:42,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851075672] [2024-11-19 22:28:42,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:42,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:28:42,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:28:42,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:28:42,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 22:28:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:42,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 22:28:42,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:28:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:42,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:28:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:43,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851075672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:28:43,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:28:43,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-19 22:28:43,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467294849] [2024-11-19 22:28:43,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:28:43,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 22:28:43,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:43,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 22:28:43,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-19 22:28:43,566 INFO L87 Difference]: Start difference. First operand 34258 states and 48040 transitions. Second operand has 21 states, 21 states have (on average 10.666666666666666) internal successors, (224), 20 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:28:45,288 INFO L93 Difference]: Finished difference Result 128725 states and 181697 transitions. [2024-11-19 22:28:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 22:28:45,289 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.666666666666666) internal successors, (224), 20 states have internal predecessors, (224), 0 states have call successors, (0), 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 99 [2024-11-19 22:28:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:28:45,395 INFO L225 Difference]: With dead ends: 128725 [2024-11-19 22:28:45,395 INFO L226 Difference]: Without dead ends: 94724 [2024-11-19 22:28:45,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 22:28:45,428 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 1417 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 22:28:45,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 912 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 22:28:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94724 states. [2024-11-19 22:28:47,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94724 to 74778. [2024-11-19 22:28:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74778 states, 74777 states have (on average 1.3954157026893297) internal successors, (104345), 74777 states have internal predecessors, (104345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74778 states to 74778 states and 104345 transitions. [2024-11-19 22:28:47,983 INFO L78 Accepts]: Start accepts. Automaton has 74778 states and 104345 transitions. Word has length 99 [2024-11-19 22:28:47,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:28:47,984 INFO L471 AbstractCegarLoop]: Abstraction has 74778 states and 104345 transitions. [2024-11-19 22:28:47,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.666666666666666) internal successors, (224), 20 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:28:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 74778 states and 104345 transitions. [2024-11-19 22:28:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-19 22:28:47,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:28:47,985 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:28:47,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 22:28:48,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-19 22:28:48,186 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:28:48,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:28:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash 365622195, now seen corresponding path program 1 times [2024-11-19 22:28:48,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:28:48,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102274330] [2024-11-19 22:28:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:48,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:28:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:49,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:28:49,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102274330] [2024-11-19 22:28:49,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102274330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:28:49,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421382997] [2024-11-19 22:28:49,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:28:49,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:28:49,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:28:49,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:28:49,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 22:28:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:28:49,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 22:28:49,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:28:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:49,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:28:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:28:50,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421382997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:28:50,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:28:50,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-19 22:28:50,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425035211] [2024-11-19 22:28:50,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:28:50,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 22:28:50,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:28:50,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 22:28:50,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-19 22:28:50,591 INFO L87 Difference]: Start difference. First operand 74778 states and 104345 transitions. Second operand has 28 states, 28 states have (on average 9.678571428571429) internal successors, (271), 27 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 22:29:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:29:03,628 INFO L93 Difference]: Finished difference Result 636721 states and 885993 transitions. [2024-11-19 22:29:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-19 22:29:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.678571428571429) internal successors, (271), 27 states have internal predecessors, (271), 0 states have call successors, (0), 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 99 [2024-11-19 22:29:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:29:04,578 INFO L225 Difference]: With dead ends: 636721 [2024-11-19 22:29:04,578 INFO L226 Difference]: Without dead ends: 562504 [2024-11-19 22:29:04,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1603 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1144, Invalid=5176, Unknown=0, NotChecked=0, Total=6320 [2024-11-19 22:29:04,722 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 4627 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 22:29:04,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 2161 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 22:29:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562504 states.