./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label51.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 74edf29578da59b17de672f50e10ed8f88a3850b8ffae9884ae020db50745360 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:39:17,799 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:39:17,851 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:39:17,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:39:17,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:39:17,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:39:17,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:39:17,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:39:17,890 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:39:17,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:39:17,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:39:17,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:39:17,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:39:17,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:39:17,893 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:39:17,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:39:17,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:39:17,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:39:17,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:39:17,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:39:17,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:39:17,899 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:39:17,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:39:17,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:39:17,899 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:39:17,899 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:39:17,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:39:17,900 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:39:17,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:39:17,900 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:39:17,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:39:17,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:39:17,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:39:17,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:39:17,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:39:17,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:39:17,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:39:17,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:39:17,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:39:17,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:39:17,904 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:39:17,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:39:17,906 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74edf29578da59b17de672f50e10ed8f88a3850b8ffae9884ae020db50745360 [2024-10-10 22:39:18,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:39:18,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:39:18,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:39:18,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:39:18,241 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:39:18,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label51.c [2024-10-10 22:39:19,719 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:39:20,031 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:39:20,032 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label51.c [2024-10-10 22:39:20,055 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/17bfe7eb0/d1891e3ddb864e0d885768926c769fb4/FLAGabae53a9b [2024-10-10 22:39:20,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/17bfe7eb0/d1891e3ddb864e0d885768926c769fb4 [2024-10-10 22:39:20,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:39:20,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:39:20,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:39:20,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:39:20,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:39:20,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:39:20" (1/1) ... [2024-10-10 22:39:20,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e46f27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:20, skipping insertion in model container [2024-10-10 22:39:20,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:39:20" (1/1) ... [2024-10-10 22:39:20,368 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:39:20,888 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label51.c[59610,59623] [2024-10-10 22:39:20,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:39:20,932 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:39:21,098 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label51.c[59610,59623] [2024-10-10 22:39:21,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:39:21,128 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:39:21,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21 WrapperNode [2024-10-10 22:39:21,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:39:21,130 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:39:21,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:39:21,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:39:21,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,173 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,260 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-10 22:39:21,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:39:21,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:39:21,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:39:21,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:39:21,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,347 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]. [2024-10-10 22:39:21,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:39:21,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:39:21,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:39:21,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:39:21,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (1/1) ... [2024-10-10 22:39:21,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:39:21,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:21,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:39:21,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:39:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:39:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:39:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:39:21,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:39:21,765 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:39:21,768 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:39:23,589 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-10 22:39:23,589 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:39:23,652 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:39:23,653 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 22:39:23,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:39:23 BoogieIcfgContainer [2024-10-10 22:39:23,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:39:23,656 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:39:23,656 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:39:23,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:39:23,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:39:20" (1/3) ... [2024-10-10 22:39:23,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63293552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:39:23, skipping insertion in model container [2024-10-10 22:39:23,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:39:21" (2/3) ... [2024-10-10 22:39:23,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63293552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:39:23, skipping insertion in model container [2024-10-10 22:39:23,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:39:23" (3/3) ... [2024-10-10 22:39:23,665 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label51.c [2024-10-10 22:39:23,682 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:39:23,683 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:39:23,759 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:39:23,765 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;@71902373, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:39:23,765 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:39:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:23,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-10 22:39:23,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:23,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:23,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:23,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1872444927, now seen corresponding path program 1 times [2024-10-10 22:39:23,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:23,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743596614] [2024-10-10 22:39:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:23,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:24,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:24,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743596614] [2024-10-10 22:39:24,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743596614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:24,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:24,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:24,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248136462] [2024-10-10 22:39:24,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:24,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:39:24,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:24,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:39:24,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:39:24,451 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:24,500 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-10 22:39:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:39:24,503 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2024-10-10 22:39:24,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:24,514 INFO L225 Difference]: With dead ends: 479 [2024-10-10 22:39:24,514 INFO L226 Difference]: Without dead ends: 238 [2024-10-10 22:39:24,517 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 [2024-10-10 22:39:24,521 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:24,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:39:24,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-10 22:39:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-10 22:39:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-10 22:39:24,572 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 187 [2024-10-10 22:39:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:24,575 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-10 22:39:24,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-10 22:39:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-10 22:39:24,580 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:24,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:24,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:39:24,582 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:24,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1122569840, now seen corresponding path program 1 times [2024-10-10 22:39:24,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:24,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051252907] [2024-10-10 22:39:24,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:24,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:25,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051252907] [2024-10-10 22:39:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051252907] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:25,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:25,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:25,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946915007] [2024-10-10 22:39:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:25,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:25,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:25,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:25,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:25,343 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:26,349 INFO L93 Difference]: Finished difference Result 694 states and 1153 transitions. [2024-10-10 22:39:26,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:26,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2024-10-10 22:39:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:26,357 INFO L225 Difference]: With dead ends: 694 [2024-10-10 22:39:26,359 INFO L226 Difference]: Without dead ends: 457 [2024-10-10 22:39:26,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:26,362 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 46 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:26,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 105 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-10 22:39:26,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-10-10 22:39:26,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 446. [2024-10-10 22:39:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.5932584269662922) internal successors, (709), 445 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:26,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 709 transitions. [2024-10-10 22:39:26,393 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 709 transitions. Word has length 187 [2024-10-10 22:39:26,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:26,394 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 709 transitions. [2024-10-10 22:39:26,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 709 transitions. [2024-10-10 22:39:26,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-10 22:39:26,398 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:26,398 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:26,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:39:26,399 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:26,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:26,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1260485004, now seen corresponding path program 1 times [2024-10-10 22:39:26,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:26,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611213785] [2024-10-10 22:39:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:26,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:26,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:26,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:26,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611213785] [2024-10-10 22:39:26,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611213785] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:26,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:26,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:26,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211927627] [2024-10-10 22:39:26,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:26,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:26,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:26,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:26,781 INFO L87 Difference]: Start difference. First operand 446 states and 709 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:27,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:27,500 INFO L93 Difference]: Finished difference Result 1297 states and 2070 transitions. [2024-10-10 22:39:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:27,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2024-10-10 22:39:27,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:27,505 INFO L225 Difference]: With dead ends: 1297 [2024-10-10 22:39:27,505 INFO L226 Difference]: Without dead ends: 852 [2024-10-10 22:39:27,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:27,507 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 216 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:27,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 190 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 22:39:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-10-10 22:39:27,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2024-10-10 22:39:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.3877790834312573) internal successors, (1181), 851 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:27,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1181 transitions. [2024-10-10 22:39:27,547 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1181 transitions. Word has length 193 [2024-10-10 22:39:27,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:27,548 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1181 transitions. [2024-10-10 22:39:27,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:27,548 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1181 transitions. [2024-10-10 22:39:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-10-10 22:39:27,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:27,558 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:27,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 22:39:27,561 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:27,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash 621492304, now seen corresponding path program 1 times [2024-10-10 22:39:27,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:27,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17403535] [2024-10-10 22:39:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:27,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:27,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:27,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17403535] [2024-10-10 22:39:27,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17403535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:27,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:27,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:27,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660010172] [2024-10-10 22:39:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:27,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:27,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:27,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:27,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:27,891 INFO L87 Difference]: Start difference. First operand 852 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:28,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:28,692 INFO L93 Difference]: Finished difference Result 2534 states and 3512 transitions. [2024-10-10 22:39:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:28,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2024-10-10 22:39:28,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:28,699 INFO L225 Difference]: With dead ends: 2534 [2024-10-10 22:39:28,699 INFO L226 Difference]: Without dead ends: 1683 [2024-10-10 22:39:28,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:28,702 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 241 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:28,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 220 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:39:28,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2024-10-10 22:39:28,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1681. [2024-10-10 22:39:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1680 states have (on average 1.3279761904761904) internal successors, (2231), 1680 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2231 transitions. [2024-10-10 22:39:28,767 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2231 transitions. Word has length 200 [2024-10-10 22:39:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:28,767 INFO L471 AbstractCegarLoop]: Abstraction has 1681 states and 2231 transitions. [2024-10-10 22:39:28,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2231 transitions. [2024-10-10 22:39:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-10-10 22:39:28,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:28,774 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:28,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 22:39:28,775 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:28,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:28,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1152943533, now seen corresponding path program 1 times [2024-10-10 22:39:28,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:28,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895737415] [2024-10-10 22:39:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:28,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:39:28,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:28,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895737415] [2024-10-10 22:39:28,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895737415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:28,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:28,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:28,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663785092] [2024-10-10 22:39:28,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:28,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:28,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:28,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:28,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:28,974 INFO L87 Difference]: Start difference. First operand 1681 states and 2231 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:29,812 INFO L93 Difference]: Finished difference Result 5005 states and 6650 transitions. [2024-10-10 22:39:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:29,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 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 201 [2024-10-10 22:39:29,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:29,824 INFO L225 Difference]: With dead ends: 5005 [2024-10-10 22:39:29,825 INFO L226 Difference]: Without dead ends: 3325 [2024-10-10 22:39:29,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:29,832 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:29,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:39:29,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2024-10-10 22:39:29,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3309. [2024-10-10 22:39:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3308 states have (on average 1.3019951632406288) internal successors, (4307), 3308 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4307 transitions. [2024-10-10 22:39:29,905 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4307 transitions. Word has length 201 [2024-10-10 22:39:29,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:29,905 INFO L471 AbstractCegarLoop]: Abstraction has 3309 states and 4307 transitions. [2024-10-10 22:39:29,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:29,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4307 transitions. [2024-10-10 22:39:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-10-10 22:39:29,914 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:29,914 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:29,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 22:39:29,914 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:29,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash 739166786, now seen corresponding path program 1 times [2024-10-10 22:39:29,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:29,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282788846] [2024-10-10 22:39:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:29,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:39:30,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:30,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282788846] [2024-10-10 22:39:30,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282788846] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:30,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:30,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:39:30,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818958231] [2024-10-10 22:39:30,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:30,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:30,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:30,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:30,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:30,228 INFO L87 Difference]: Start difference. First operand 3309 states and 4307 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:31,073 INFO L93 Difference]: Finished difference Result 8244 states and 11007 transitions. [2024-10-10 22:39:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 208 [2024-10-10 22:39:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:31,092 INFO L225 Difference]: With dead ends: 8244 [2024-10-10 22:39:31,092 INFO L226 Difference]: Without dead ends: 4936 [2024-10-10 22:39:31,098 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 [2024-10-10 22:39:31,099 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 233 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:31,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 401 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:39:31,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2024-10-10 22:39:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4934. [2024-10-10 22:39:31,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4933 states have (on average 1.2475167241029799) internal successors, (6154), 4933 states have internal predecessors, (6154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:31,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 6154 transitions. [2024-10-10 22:39:31,214 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 6154 transitions. Word has length 208 [2024-10-10 22:39:31,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:31,214 INFO L471 AbstractCegarLoop]: Abstraction has 4934 states and 6154 transitions. [2024-10-10 22:39:31,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:31,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 6154 transitions. [2024-10-10 22:39:31,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-10-10 22:39:31,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:31,284 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:31,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 22:39:31,284 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:31,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1550173314, now seen corresponding path program 1 times [2024-10-10 22:39:31,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:31,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984259240] [2024-10-10 22:39:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:31,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-10 22:39:31,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:31,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984259240] [2024-10-10 22:39:31,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984259240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:31,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:31,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:31,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255349503] [2024-10-10 22:39:31,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:31,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:31,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:31,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:31,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:31,756 INFO L87 Difference]: Start difference. First operand 4934 states and 6154 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:32,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:32,714 INFO L93 Difference]: Finished difference Result 14563 states and 18199 transitions. [2024-10-10 22:39:32,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:32,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2024-10-10 22:39:32,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:32,752 INFO L225 Difference]: With dead ends: 14563 [2024-10-10 22:39:32,752 INFO L226 Difference]: Without dead ends: 9630 [2024-10-10 22:39:32,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:32,765 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 216 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:32,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 194 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:39:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9630 states. [2024-10-10 22:39:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9630 to 9621. [2024-10-10 22:39:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9621 states, 9620 states have (on average 1.225987525987526) internal successors, (11794), 9620 states have internal predecessors, (11794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9621 states to 9621 states and 11794 transitions. [2024-10-10 22:39:32,970 INFO L78 Accepts]: Start accepts. Automaton has 9621 states and 11794 transitions. Word has length 241 [2024-10-10 22:39:32,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:32,971 INFO L471 AbstractCegarLoop]: Abstraction has 9621 states and 11794 transitions. [2024-10-10 22:39:32,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:32,972 INFO L276 IsEmpty]: Start isEmpty. Operand 9621 states and 11794 transitions. [2024-10-10 22:39:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-10 22:39:32,989 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:32,989 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:32,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-10 22:39:32,990 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:32,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:32,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1232313720, now seen corresponding path program 1 times [2024-10-10 22:39:32,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:32,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927174384] [2024-10-10 22:39:32,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:32,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:33,529 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-10 22:39:33,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:33,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927174384] [2024-10-10 22:39:33,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927174384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:33,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:33,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:33,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664033017] [2024-10-10 22:39:33,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:33,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:33,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:33,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:33,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:33,532 INFO L87 Difference]: Start difference. First operand 9621 states and 11794 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:34,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:34,454 INFO L93 Difference]: Finished difference Result 25776 states and 31493 transitions. [2024-10-10 22:39:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:34,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 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 251 [2024-10-10 22:39:34,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:34,566 INFO L225 Difference]: With dead ends: 25776 [2024-10-10 22:39:34,566 INFO L226 Difference]: Without dead ends: 16156 [2024-10-10 22:39:34,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:34,587 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 243 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:34,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 221 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:39:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16156 states. [2024-10-10 22:39:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16156 to 16147. [2024-10-10 22:39:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16147 states, 16146 states have (on average 1.2127461910070605) internal successors, (19581), 16146 states have internal predecessors, (19581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16147 states to 16147 states and 19581 transitions. [2024-10-10 22:39:34,881 INFO L78 Accepts]: Start accepts. Automaton has 16147 states and 19581 transitions. Word has length 251 [2024-10-10 22:39:34,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:34,882 INFO L471 AbstractCegarLoop]: Abstraction has 16147 states and 19581 transitions. [2024-10-10 22:39:34,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 16147 states and 19581 transitions. [2024-10-10 22:39:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-10 22:39:34,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:34,905 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:34,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-10 22:39:34,905 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:34,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash 560940539, now seen corresponding path program 1 times [2024-10-10 22:39:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:34,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945737311] [2024-10-10 22:39:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:34,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-10 22:39:35,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:35,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945737311] [2024-10-10 22:39:35,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945737311] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:35,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:35,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:39:35,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324276767] [2024-10-10 22:39:35,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:35,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:39:35,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:39:35,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:39:35,258 INFO L87 Difference]: Start difference. First operand 16147 states and 19581 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:36,272 INFO L93 Difference]: Finished difference Result 37732 states and 45989 transitions. [2024-10-10 22:39:36,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:39:36,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-10-10 22:39:36,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:36,316 INFO L225 Difference]: With dead ends: 37732 [2024-10-10 22:39:36,316 INFO L226 Difference]: Without dead ends: 22195 [2024-10-10 22:39:36,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:39:36,339 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 615 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:36,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 50 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-10 22:39:36,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22195 states. [2024-10-10 22:39:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22195 to 22188. [2024-10-10 22:39:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22188 states, 22187 states have (on average 1.1619416775589309) internal successors, (25780), 22187 states have internal predecessors, (25780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22188 states to 22188 states and 25780 transitions. [2024-10-10 22:39:36,808 INFO L78 Accepts]: Start accepts. Automaton has 22188 states and 25780 transitions. Word has length 253 [2024-10-10 22:39:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:36,808 INFO L471 AbstractCegarLoop]: Abstraction has 22188 states and 25780 transitions. [2024-10-10 22:39:36,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 22188 states and 25780 transitions. [2024-10-10 22:39:36,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-10-10 22:39:36,836 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:36,837 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:36,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-10 22:39:36,838 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:36,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2067688924, now seen corresponding path program 1 times [2024-10-10 22:39:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:36,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800319178] [2024-10-10 22:39:36,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:36,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:37,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800319178] [2024-10-10 22:39:37,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800319178] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:37,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:37,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:37,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228595317] [2024-10-10 22:39:37,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:37,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:37,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:37,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:37,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:37,566 INFO L87 Difference]: Start difference. First operand 22188 states and 25780 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:38,302 INFO L93 Difference]: Finished difference Result 39084 states and 45309 transitions. [2024-10-10 22:39:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:38,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2024-10-10 22:39:38,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:38,343 INFO L225 Difference]: With dead ends: 39084 [2024-10-10 22:39:38,343 INFO L226 Difference]: Without dead ends: 22188 [2024-10-10 22:39:38,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:38,369 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:38,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 149 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:39:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22188 states. [2024-10-10 22:39:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22188 to 22188. [2024-10-10 22:39:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22188 states, 22187 states have (on average 1.1618064632442422) internal successors, (25777), 22187 states have internal predecessors, (25777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:38,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22188 states to 22188 states and 25777 transitions. [2024-10-10 22:39:38,823 INFO L78 Accepts]: Start accepts. Automaton has 22188 states and 25777 transitions. Word has length 261 [2024-10-10 22:39:38,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:38,823 INFO L471 AbstractCegarLoop]: Abstraction has 22188 states and 25777 transitions. [2024-10-10 22:39:38,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 22188 states and 25777 transitions. [2024-10-10 22:39:38,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-10-10 22:39:38,855 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:38,856 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:38,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-10 22:39:38,856 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:38,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:38,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1968154429, now seen corresponding path program 1 times [2024-10-10 22:39:38,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:38,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479637167] [2024-10-10 22:39:38,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:38,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:39:39,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:39,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479637167] [2024-10-10 22:39:39,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479637167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:39,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:39,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:39,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947885030] [2024-10-10 22:39:39,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:39,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:39,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:39,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:39,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:39,335 INFO L87 Difference]: Start difference. First operand 22188 states and 25777 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:40,112 INFO L93 Difference]: Finished difference Result 42759 states and 50058 transitions. [2024-10-10 22:39:40,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:40,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 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 268 [2024-10-10 22:39:40,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:40,159 INFO L225 Difference]: With dead ends: 42759 [2024-10-10 22:39:40,160 INFO L226 Difference]: Without dead ends: 27897 [2024-10-10 22:39:40,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:40,181 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 160 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:40,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 121 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:39:40,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27897 states. [2024-10-10 22:39:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27897 to 25853. [2024-10-10 22:39:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25853 states, 25852 states have (on average 1.1790963948630666) internal successors, (30482), 25852 states have internal predecessors, (30482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25853 states to 25853 states and 30482 transitions. [2024-10-10 22:39:40,553 INFO L78 Accepts]: Start accepts. Automaton has 25853 states and 30482 transitions. Word has length 268 [2024-10-10 22:39:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:40,553 INFO L471 AbstractCegarLoop]: Abstraction has 25853 states and 30482 transitions. [2024-10-10 22:39:40,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 25853 states and 30482 transitions. [2024-10-10 22:39:40,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-10-10 22:39:40,576 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:40,577 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:40,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-10 22:39:40,577 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:40,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash -823151810, now seen corresponding path program 1 times [2024-10-10 22:39:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:40,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487312702] [2024-10-10 22:39:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:40,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-10 22:39:41,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:41,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487312702] [2024-10-10 22:39:41,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487312702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:41,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:41,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:39:41,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96824474] [2024-10-10 22:39:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:41,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:41,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:41,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:41,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:41,003 INFO L87 Difference]: Start difference. First operand 25853 states and 30482 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:41,752 INFO L93 Difference]: Finished difference Result 53738 states and 63202 transitions. [2024-10-10 22:39:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:41,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 277 [2024-10-10 22:39:41,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:41,792 INFO L225 Difference]: With dead ends: 53738 [2024-10-10 22:39:41,792 INFO L226 Difference]: Without dead ends: 29310 [2024-10-10 22:39:41,812 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 [2024-10-10 22:39:41,813 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 184 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:41,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 353 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:39:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29310 states. [2024-10-10 22:39:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29310 to 28492. [2024-10-10 22:39:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28492 states, 28491 states have (on average 1.1665438208557088) internal successors, (33236), 28491 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28492 states to 28492 states and 33236 transitions. [2024-10-10 22:39:42,317 INFO L78 Accepts]: Start accepts. Automaton has 28492 states and 33236 transitions. Word has length 277 [2024-10-10 22:39:42,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:42,318 INFO L471 AbstractCegarLoop]: Abstraction has 28492 states and 33236 transitions. [2024-10-10 22:39:42,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 28492 states and 33236 transitions. [2024-10-10 22:39:42,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-10-10 22:39:42,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:42,345 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:42,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-10 22:39:42,345 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:42,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:42,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1117756785, now seen corresponding path program 1 times [2024-10-10 22:39:42,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:42,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81033017] [2024-10-10 22:39:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:42,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:42,817 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:42,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:42,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81033017] [2024-10-10 22:39:42,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81033017] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:42,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:42,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:39:42,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708556245] [2024-10-10 22:39:42,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:42,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:39:42,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:42,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:39:42,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:39:42,822 INFO L87 Difference]: Start difference. First operand 28492 states and 33236 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:44,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:44,079 INFO L93 Difference]: Finished difference Result 52923 states and 61837 transitions. [2024-10-10 22:39:44,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:39:44,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 289 [2024-10-10 22:39:44,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:44,117 INFO L225 Difference]: With dead ends: 52923 [2024-10-10 22:39:44,117 INFO L226 Difference]: Without dead ends: 29319 [2024-10-10 22:39:44,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:39:44,142 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 353 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:44,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 74 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-10 22:39:44,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29319 states. [2024-10-10 22:39:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29319 to 28292. [2024-10-10 22:39:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28292 states, 28291 states have (on average 1.1119790746173694) internal successors, (31459), 28291 states have internal predecessors, (31459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28292 states to 28292 states and 31459 transitions. [2024-10-10 22:39:44,623 INFO L78 Accepts]: Start accepts. Automaton has 28292 states and 31459 transitions. Word has length 289 [2024-10-10 22:39:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:44,623 INFO L471 AbstractCegarLoop]: Abstraction has 28292 states and 31459 transitions. [2024-10-10 22:39:44,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:44,623 INFO L276 IsEmpty]: Start isEmpty. Operand 28292 states and 31459 transitions. [2024-10-10 22:39:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-10-10 22:39:44,640 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:44,640 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:44,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-10 22:39:44,641 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:44,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:44,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2095846115, now seen corresponding path program 1 times [2024-10-10 22:39:44,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:44,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421244898] [2024-10-10 22:39:44,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:44,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-10 22:39:45,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:45,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421244898] [2024-10-10 22:39:45,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421244898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:45,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:45,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:45,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232951937] [2024-10-10 22:39:45,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:45,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:45,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:45,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:45,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:45,157 INFO L87 Difference]: Start difference. First operand 28292 states and 31459 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:45,855 INFO L93 Difference]: Finished difference Result 66974 states and 74878 transitions. [2024-10-10 22:39:45,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:45,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 291 [2024-10-10 22:39:45,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:45,905 INFO L225 Difference]: With dead ends: 66974 [2024-10-10 22:39:45,905 INFO L226 Difference]: Without dead ends: 39904 [2024-10-10 22:39:45,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:45,932 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 200 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:45,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 99 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:39:45,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39904 states. [2024-10-10 22:39:46,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39904 to 39685. [2024-10-10 22:39:46,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39685 states, 39684 states have (on average 1.1194436044753553) internal successors, (44424), 39684 states have internal predecessors, (44424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39685 states to 39685 states and 44424 transitions. [2024-10-10 22:39:46,283 INFO L78 Accepts]: Start accepts. Automaton has 39685 states and 44424 transitions. Word has length 291 [2024-10-10 22:39:46,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:46,283 INFO L471 AbstractCegarLoop]: Abstraction has 39685 states and 44424 transitions. [2024-10-10 22:39:46,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 39685 states and 44424 transitions. [2024-10-10 22:39:46,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-10-10 22:39:46,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:46,397 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:46,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-10 22:39:46,398 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:46,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:46,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1357004408, now seen corresponding path program 1 times [2024-10-10 22:39:46,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:46,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576387721] [2024-10-10 22:39:46,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:46,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-10-10 22:39:46,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:46,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576387721] [2024-10-10 22:39:46,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576387721] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:46,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957395944] [2024-10-10 22:39:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:46,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:46,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:46,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:39:46,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:39:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:46,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:39:46,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-10-10 22:39:47,265 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:47,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957395944] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:47,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:47,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 22:39:47,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268108721] [2024-10-10 22:39:47,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:47,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:47,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:47,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:47,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:47,267 INFO L87 Difference]: Start difference. First operand 39685 states and 44424 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:47,885 INFO L93 Difference]: Finished difference Result 72660 states and 81215 transitions. [2024-10-10 22:39:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:47,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 300 [2024-10-10 22:39:47,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:47,923 INFO L225 Difference]: With dead ends: 72660 [2024-10-10 22:39:47,923 INFO L226 Difference]: Without dead ends: 37857 [2024-10-10 22:39:47,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:47,948 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 42 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:47,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 92 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:39:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37857 states. [2024-10-10 22:39:48,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37857 to 32970. [2024-10-10 22:39:48,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32970 states, 32969 states have (on average 1.1095271315478177) internal successors, (36580), 32969 states have internal predecessors, (36580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32970 states to 32970 states and 36580 transitions. [2024-10-10 22:39:48,402 INFO L78 Accepts]: Start accepts. Automaton has 32970 states and 36580 transitions. Word has length 300 [2024-10-10 22:39:48,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:48,403 INFO L471 AbstractCegarLoop]: Abstraction has 32970 states and 36580 transitions. [2024-10-10 22:39:48,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 32970 states and 36580 transitions. [2024-10-10 22:39:48,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-10-10 22:39:48,418 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:48,419 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:48,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 22:39:48,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-10 22:39:48,620 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:48,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1259861417, now seen corresponding path program 1 times [2024-10-10 22:39:48,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:48,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102499450] [2024-10-10 22:39:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:48,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:49,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:49,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102499450] [2024-10-10 22:39:49,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102499450] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:49,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884161522] [2024-10-10 22:39:49,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:49,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:49,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:49,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:39:49,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:39:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:49,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:39:49,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-10 22:39:49,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884161522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:49,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:49,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-10 22:39:49,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530552654] [2024-10-10 22:39:49,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:49,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:49,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:49,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:49,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:49,544 INFO L87 Difference]: Start difference. First operand 32970 states and 36580 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:50,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:50,257 INFO L93 Difference]: Finished difference Result 75902 states and 84380 transitions. [2024-10-10 22:39:50,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:50,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 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 319 [2024-10-10 22:39:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:50,309 INFO L225 Difference]: With dead ends: 75902 [2024-10-10 22:39:50,309 INFO L226 Difference]: Without dead ends: 43950 [2024-10-10 22:39:50,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:50,338 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 143 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:50,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 105 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:39:50,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43950 states. [2024-10-10 22:39:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43950 to 42726. [2024-10-10 22:39:50,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42726 states, 42725 states have (on average 1.1046225863077823) internal successors, (47195), 42725 states have internal predecessors, (47195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42726 states to 42726 states and 47195 transitions. [2024-10-10 22:39:50,888 INFO L78 Accepts]: Start accepts. Automaton has 42726 states and 47195 transitions. Word has length 319 [2024-10-10 22:39:50,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:50,888 INFO L471 AbstractCegarLoop]: Abstraction has 42726 states and 47195 transitions. [2024-10-10 22:39:50,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 42726 states and 47195 transitions. [2024-10-10 22:39:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-10-10 22:39:50,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:50,919 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:50,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 22:39:51,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-10 22:39:51,120 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:51,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:51,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2086042724, now seen corresponding path program 1 times [2024-10-10 22:39:51,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:51,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361216941] [2024-10-10 22:39:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:51,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:39:51,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:51,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361216941] [2024-10-10 22:39:51,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361216941] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:51,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856667020] [2024-10-10 22:39:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:51,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:51,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:51,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:39:51,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:39:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:51,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:39:51,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:51,905 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-10 22:39:51,905 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:51,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856667020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:51,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:51,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-10 22:39:51,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864120276] [2024-10-10 22:39:51,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:51,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:51,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:51,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:51,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:51,908 INFO L87 Difference]: Start difference. First operand 42726 states and 47195 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:52,371 INFO L93 Difference]: Finished difference Result 98275 states and 108489 transitions. [2024-10-10 22:39:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:52,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 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 328 [2024-10-10 22:39:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:52,452 INFO L225 Difference]: With dead ends: 98275 [2024-10-10 22:39:52,453 INFO L226 Difference]: Without dead ends: 64500 [2024-10-10 22:39:52,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:52,492 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 201 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:52,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 478 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:39:52,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64500 states. [2024-10-10 22:39:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64500 to 64498. [2024-10-10 22:39:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64498 states, 64497 states have (on average 1.1001752019473774) internal successors, (70958), 64497 states have internal predecessors, (70958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:53,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64498 states to 64498 states and 70958 transitions. [2024-10-10 22:39:53,349 INFO L78 Accepts]: Start accepts. Automaton has 64498 states and 70958 transitions. Word has length 328 [2024-10-10 22:39:53,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:53,349 INFO L471 AbstractCegarLoop]: Abstraction has 64498 states and 70958 transitions. [2024-10-10 22:39:53,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:53,350 INFO L276 IsEmpty]: Start isEmpty. Operand 64498 states and 70958 transitions. [2024-10-10 22:39:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-10-10 22:39:53,386 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:53,386 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:53,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 22:39:53,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:53,587 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:53,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:53,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1422589965, now seen corresponding path program 1 times [2024-10-10 22:39:53,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:53,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335730656] [2024-10-10 22:39:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:53,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-10 22:39:53,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335730656] [2024-10-10 22:39:53,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335730656] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405093064] [2024-10-10 22:39:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:53,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:53,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:53,939 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:39:53,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 22:39:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:54,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:39:54,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:39:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-10-10 22:39:54,490 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:39:54,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405093064] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:54,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:39:54,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 22:39:54,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951992696] [2024-10-10 22:39:54,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:54,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:54,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:54,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:54,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:54,492 INFO L87 Difference]: Start difference. First operand 64498 states and 70958 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:55,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:55,183 INFO L93 Difference]: Finished difference Result 121680 states and 134128 transitions. [2024-10-10 22:39:55,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:55,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 332 [2024-10-10 22:39:55,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:55,272 INFO L225 Difference]: With dead ends: 121680 [2024-10-10 22:39:55,273 INFO L226 Difference]: Without dead ends: 58403 [2024-10-10 22:39:55,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:39:55,316 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 76 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:55,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 272 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:39:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58403 states. [2024-10-10 22:39:56,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58403 to 58394. [2024-10-10 22:39:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58394 states, 58393 states have (on average 1.096073159454044) internal successors, (64003), 58393 states have internal predecessors, (64003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58394 states to 58394 states and 64003 transitions. [2024-10-10 22:39:56,134 INFO L78 Accepts]: Start accepts. Automaton has 58394 states and 64003 transitions. Word has length 332 [2024-10-10 22:39:56,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:56,134 INFO L471 AbstractCegarLoop]: Abstraction has 58394 states and 64003 transitions. [2024-10-10 22:39:56,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 58394 states and 64003 transitions. [2024-10-10 22:39:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-10-10 22:39:56,162 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:56,162 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:56,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 22:39:56,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-10 22:39:56,363 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:56,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:56,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1207981039, now seen corresponding path program 1 times [2024-10-10 22:39:56,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:56,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462458236] [2024-10-10 22:39:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:56,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-10 22:39:56,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:56,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462458236] [2024-10-10 22:39:56,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462458236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:39:56,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:39:56,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:39:56,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931813377] [2024-10-10 22:39:56,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:39:56,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:39:56,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:39:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:39:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:56,890 INFO L87 Difference]: Start difference. First operand 58394 states and 64003 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:57,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:39:57,519 INFO L93 Difference]: Finished difference Result 153823 states and 168545 transitions. [2024-10-10 22:39:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:39:57,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 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 342 [2024-10-10 22:39:57,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:39:57,632 INFO L225 Difference]: With dead ends: 153823 [2024-10-10 22:39:57,633 INFO L226 Difference]: Without dead ends: 96853 [2024-10-10 22:39:57,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:39:57,680 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 179 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:39:57,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 472 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:39:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96853 states. [2024-10-10 22:39:58,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96853 to 96840. [2024-10-10 22:39:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96840 states, 96839 states have (on average 1.0945693367341671) internal successors, (105997), 96839 states have internal predecessors, (105997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96840 states to 96840 states and 105997 transitions. [2024-10-10 22:39:59,138 INFO L78 Accepts]: Start accepts. Automaton has 96840 states and 105997 transitions. Word has length 342 [2024-10-10 22:39:59,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:39:59,138 INFO L471 AbstractCegarLoop]: Abstraction has 96840 states and 105997 transitions. [2024-10-10 22:39:59,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:39:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand 96840 states and 105997 transitions. [2024-10-10 22:39:59,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-10-10 22:39:59,165 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:39:59,166 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:39:59,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-10 22:39:59,166 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:39:59,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:39:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1083723364, now seen corresponding path program 1 times [2024-10-10 22:39:59,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:39:59,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140362133] [2024-10-10 22:39:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:39:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:39:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-10 22:39:59,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:39:59,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140362133] [2024-10-10 22:39:59,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140362133] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:39:59,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447498613] [2024-10-10 22:39:59,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:39:59,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:39:59,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:39:59,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:39:59,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 22:40:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:00,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:40:00,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:40:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-10-10 22:40:00,382 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:40:00,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447498613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:40:00,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:40:00,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 22:40:00,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169367667] [2024-10-10 22:40:00,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:40:00,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:40:00,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:40:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:40:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:40:00,384 INFO L87 Difference]: Start difference. First operand 96840 states and 105997 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:01,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:40:01,352 INFO L93 Difference]: Finished difference Result 185190 states and 202527 transitions. [2024-10-10 22:40:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:40:01,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 351 [2024-10-10 22:40:01,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:40:01,465 INFO L225 Difference]: With dead ends: 185190 [2024-10-10 22:40:01,465 INFO L226 Difference]: Without dead ends: 88554 [2024-10-10 22:40:01,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:40:01,497 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 37 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:40:01,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 322 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:40:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88554 states. [2024-10-10 22:40:02,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88554 to 88507. [2024-10-10 22:40:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88507 states, 88506 states have (on average 1.0882087090140782) internal successors, (96313), 88506 states have internal predecessors, (96313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:02,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88507 states to 88507 states and 96313 transitions. [2024-10-10 22:40:02,629 INFO L78 Accepts]: Start accepts. Automaton has 88507 states and 96313 transitions. Word has length 351 [2024-10-10 22:40:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:40:02,630 INFO L471 AbstractCegarLoop]: Abstraction has 88507 states and 96313 transitions. [2024-10-10 22:40:02,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 88507 states and 96313 transitions. [2024-10-10 22:40:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-10-10 22:40:02,659 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:40:02,659 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:40:02,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 22:40:02,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:02,860 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:40:02,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:40:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1275896315, now seen corresponding path program 1 times [2024-10-10 22:40:02,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:40:02,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946128205] [2024-10-10 22:40:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:02,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:40:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 213 proven. 58 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-10 22:40:04,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:40:04,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946128205] [2024-10-10 22:40:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946128205] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:40:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833374490] [2024-10-10 22:40:04,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:04,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:40:04,932 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:40:04,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 22:40:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:05,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:40:05,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:40:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-10 22:40:05,436 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:40:05,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833374490] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:40:05,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:40:05,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-10 22:40:05,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772723775] [2024-10-10 22:40:05,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:40:05,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:40:05,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:40:05,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:40:05,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:40:05,439 INFO L87 Difference]: Start difference. First operand 88507 states and 96313 transitions. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:40:06,586 INFO L93 Difference]: Finished difference Result 181348 states and 197497 transitions. [2024-10-10 22:40:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:40:06,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 372 [2024-10-10 22:40:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:40:06,691 INFO L225 Difference]: With dead ends: 181348 [2024-10-10 22:40:06,692 INFO L226 Difference]: Without dead ends: 94263 [2024-10-10 22:40:06,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:40:06,751 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 412 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:40:06,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 94 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:40:06,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94263 states. [2024-10-10 22:40:07,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94263 to 90738. [2024-10-10 22:40:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90738 states, 90737 states have (on average 1.079658794097226) internal successors, (97965), 90737 states have internal predecessors, (97965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90738 states to 90738 states and 97965 transitions. [2024-10-10 22:40:08,180 INFO L78 Accepts]: Start accepts. Automaton has 90738 states and 97965 transitions. Word has length 372 [2024-10-10 22:40:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:40:08,181 INFO L471 AbstractCegarLoop]: Abstraction has 90738 states and 97965 transitions. [2024-10-10 22:40:08,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 90738 states and 97965 transitions. [2024-10-10 22:40:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-10-10 22:40:08,214 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:40:08,215 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:40:08,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 22:40:08,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-10 22:40:08,416 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:40:08,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:40:08,416 INFO L85 PathProgramCache]: Analyzing trace with hash -486748211, now seen corresponding path program 1 times [2024-10-10 22:40:08,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:40:08,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514848222] [2024-10-10 22:40:08,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:08,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:40:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 230 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:40:09,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:40:09,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514848222] [2024-10-10 22:40:09,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514848222] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:40:09,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995029389] [2024-10-10 22:40:09,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:09,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:09,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:40:09,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:40:09,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 22:40:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:09,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:40:09,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:40:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:40:09,798 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:40:09,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995029389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:40:09,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:40:09,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 22:40:09,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024792585] [2024-10-10 22:40:09,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:40:09,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:40:09,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:40:09,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:40:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:40:09,801 INFO L87 Difference]: Start difference. First operand 90738 states and 97965 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:40:10,767 INFO L93 Difference]: Finished difference Result 166818 states and 179890 transitions. [2024-10-10 22:40:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:40:10,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 376 [2024-10-10 22:40:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:40:10,858 INFO L225 Difference]: With dead ends: 166818 [2024-10-10 22:40:10,859 INFO L226 Difference]: Without dead ends: 77502 [2024-10-10 22:40:10,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:40:10,913 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 195 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:40:10,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 302 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:40:10,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77502 states. [2024-10-10 22:40:11,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77502 to 76681. [2024-10-10 22:40:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76681 states, 76680 states have (on average 1.0601199791340636) internal successors, (81290), 76680 states have internal predecessors, (81290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76681 states to 76681 states and 81290 transitions. [2024-10-10 22:40:11,844 INFO L78 Accepts]: Start accepts. Automaton has 76681 states and 81290 transitions. Word has length 376 [2024-10-10 22:40:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:40:11,845 INFO L471 AbstractCegarLoop]: Abstraction has 76681 states and 81290 transitions. [2024-10-10 22:40:11,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 76681 states and 81290 transitions. [2024-10-10 22:40:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-10-10 22:40:11,862 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:40:11,862 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:40:11,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 22:40:12,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:12,063 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:40:12,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:40:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash -431502915, now seen corresponding path program 1 times [2024-10-10 22:40:12,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:40:12,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40932176] [2024-10-10 22:40:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:12,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:40:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 221 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-10 22:40:13,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:40:13,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40932176] [2024-10-10 22:40:13,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40932176] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:40:13,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979721377] [2024-10-10 22:40:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:13,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:13,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:40:13,134 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:40:13,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 22:40:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:13,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:40:13,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:40:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-10 22:40:13,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:40:13,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979721377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:40:13,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:40:13,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 22:40:13,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073927976] [2024-10-10 22:40:13,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:40:13,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:40:13,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:40:13,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:40:13,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:40:13,420 INFO L87 Difference]: Start difference. First operand 76681 states and 81290 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:14,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:40:14,386 INFO L93 Difference]: Finished difference Result 148708 states and 157612 transitions. [2024-10-10 22:40:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:40:14,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 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 388 [2024-10-10 22:40:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:40:14,474 INFO L225 Difference]: With dead ends: 148708 [2024-10-10 22:40:14,474 INFO L226 Difference]: Without dead ends: 73449 [2024-10-10 22:40:14,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:40:14,524 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 210 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:40:14,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 325 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:40:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73449 states. [2024-10-10 22:40:15,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73449 to 69162. [2024-10-10 22:40:15,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69162 states, 69161 states have (on average 1.054062260522549) internal successors, (72900), 69161 states have internal predecessors, (72900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:15,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69162 states to 69162 states and 72900 transitions. [2024-10-10 22:40:15,462 INFO L78 Accepts]: Start accepts. Automaton has 69162 states and 72900 transitions. Word has length 388 [2024-10-10 22:40:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:40:15,462 INFO L471 AbstractCegarLoop]: Abstraction has 69162 states and 72900 transitions. [2024-10-10 22:40:15,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 69162 states and 72900 transitions. [2024-10-10 22:40:15,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-10-10 22:40:15,480 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:40:15,480 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:40:15,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 22:40:15,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-10 22:40:15,682 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:40:15,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:40:15,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1136022166, now seen corresponding path program 1 times [2024-10-10 22:40:15,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:40:15,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242726012] [2024-10-10 22:40:15,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:15,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:40:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 236 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-10 22:40:16,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:40:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242726012] [2024-10-10 22:40:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242726012] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:40:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558139301] [2024-10-10 22:40:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:16,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:16,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:40:16,463 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:40:16,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 22:40:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:16,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 22:40:16,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:40:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:40:17,174 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:40:17,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558139301] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:40:17,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:40:17,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2024-10-10 22:40:17,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176640504] [2024-10-10 22:40:17,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:40:17,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:40:17,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:40:17,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:40:17,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:40:17,176 INFO L87 Difference]: Start difference. First operand 69162 states and 72900 transitions. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:18,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:40:18,543 INFO L93 Difference]: Finished difference Result 167010 states and 176573 transitions. [2024-10-10 22:40:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:40:18,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 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 396 [2024-10-10 22:40:18,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:40:18,666 INFO L225 Difference]: With dead ends: 167010 [2024-10-10 22:40:18,666 INFO L226 Difference]: Without dead ends: 96428 [2024-10-10 22:40:18,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:40:18,718 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 262 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-10 22:40:18,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 332 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-10 22:40:18,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96428 states. [2024-10-10 22:40:19,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96428 to 89912. [2024-10-10 22:40:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89912 states, 89911 states have (on average 1.0514731234220507) internal successors, (94539), 89911 states have internal predecessors, (94539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:20,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89912 states to 89912 states and 94539 transitions. [2024-10-10 22:40:20,102 INFO L78 Accepts]: Start accepts. Automaton has 89912 states and 94539 transitions. Word has length 396 [2024-10-10 22:40:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:40:20,102 INFO L471 AbstractCegarLoop]: Abstraction has 89912 states and 94539 transitions. [2024-10-10 22:40:20,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 89912 states and 94539 transitions. [2024-10-10 22:40:20,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-10-10 22:40:20,125 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:40:20,125 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:40:20,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-10 22:40:20,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:20,326 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:40:20,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:40:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1065162880, now seen corresponding path program 1 times [2024-10-10 22:40:20,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:40:20,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346232785] [2024-10-10 22:40:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:20,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:40:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:21,173 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-10 22:40:21,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:40:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346232785] [2024-10-10 22:40:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346232785] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:40:21,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:40:21,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:40:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944848944] [2024-10-10 22:40:21,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:40:21,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:40:21,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:40:21,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:40:21,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:40:21,176 INFO L87 Difference]: Start difference. First operand 89912 states and 94539 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:21,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:40:21,973 INFO L93 Difference]: Finished difference Result 183694 states and 193062 transitions. [2024-10-10 22:40:21,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:40:21,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 406 [2024-10-10 22:40:21,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:40:22,084 INFO L225 Difference]: With dead ends: 183694 [2024-10-10 22:40:22,084 INFO L226 Difference]: Without dead ends: 94392 [2024-10-10 22:40:22,147 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 [2024-10-10 22:40:22,148 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 161 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:40:22,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 322 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:40:22,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94392 states. [2024-10-10 22:40:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94392 to 93566. [2024-10-10 22:40:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93566 states, 93565 states have (on average 1.0481590338267515) internal successors, (98071), 93565 states have internal predecessors, (98071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93566 states to 93566 states and 98071 transitions. [2024-10-10 22:40:23,773 INFO L78 Accepts]: Start accepts. Automaton has 93566 states and 98071 transitions. Word has length 406 [2024-10-10 22:40:23,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:40:23,774 INFO L471 AbstractCegarLoop]: Abstraction has 93566 states and 98071 transitions. [2024-10-10 22:40:23,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 93566 states and 98071 transitions. [2024-10-10 22:40:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-10-10 22:40:23,808 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:40:23,808 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:40:23,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-10 22:40:23,809 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:40:23,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:40:23,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1140674958, now seen corresponding path program 1 times [2024-10-10 22:40:23,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:40:23,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796240754] [2024-10-10 22:40:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:23,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:40:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 254 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-10 22:40:24,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:40:24,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796240754] [2024-10-10 22:40:24,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796240754] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:40:24,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123967680] [2024-10-10 22:40:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:24,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:40:24,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:40:24,506 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:40:24,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 22:40:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:40:24,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:40:24,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:40:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-10 22:40:25,208 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:40:25,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123967680] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:40:25,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:40:25,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-10-10 22:40:25,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68960235] [2024-10-10 22:40:25,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:40:25,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:40:25,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:40:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:40:25,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:40:25,211 INFO L87 Difference]: Start difference. First operand 93566 states and 98071 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:26,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:40:26,305 INFO L93 Difference]: Finished difference Result 240056 states and 251718 transitions. [2024-10-10 22:40:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:40:26,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 406 [2024-10-10 22:40:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:40:26,482 INFO L225 Difference]: With dead ends: 240056 [2024-10-10 22:40:26,482 INFO L226 Difference]: Without dead ends: 147912 [2024-10-10 22:40:26,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:40:26,559 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 363 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-10 22:40:26,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 430 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-10 22:40:26,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147912 states. [2024-10-10 22:40:28,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147912 to 136902. [2024-10-10 22:40:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136902 states, 136901 states have (on average 1.049517534568776) internal successors, (143680), 136901 states have internal predecessors, (143680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:28,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136902 states to 136902 states and 143680 transitions. [2024-10-10 22:40:28,681 INFO L78 Accepts]: Start accepts. Automaton has 136902 states and 143680 transitions. Word has length 406 [2024-10-10 22:40:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:40:28,681 INFO L471 AbstractCegarLoop]: Abstraction has 136902 states and 143680 transitions. [2024-10-10 22:40:28,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:40:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 136902 states and 143680 transitions. [2024-10-10 22:40:28,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-10-10 22:40:28,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:40:28,705 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 22:40:28,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-10 22:40:28,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-10 22:40:28,906 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:40:28,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:40:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1579500022, now seen corresponding path program 1 times [2024-10-10 22:40:28,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:40:28,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995343812] [2024-10-10 22:40:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:40:28,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:40:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat