./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash be53c51dc83e5173157f1fa4471313025cf2f600c0bad4f77c441750f4d9f9e8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 11:06:13,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 11:06:13,914 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-16 11:06:13,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 11:06:13,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 11:06:13,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 11:06:13,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 11:06:13,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 11:06:13,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 11:06:13,958 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 11:06:13,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 11:06:13,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 11:06:13,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 11:06:13,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 11:06:13,960 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 11:06:13,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 11:06:13,961 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 11:06:13,961 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 11:06:13,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 11:06:13,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 11:06:13,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 11:06:13,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 11:06:13,966 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 11:06:13,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 11:06:13,969 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 11:06:13,969 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 11:06:13,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 11:06:13,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 11:06:13,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 11:06:13,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 11:06:13,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 11:06:13,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 11:06:13,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 11:06:13,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 11:06:13,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 11:06:13,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 11:06:13,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 11:06:13,973 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 11:06:13,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 11:06:13,973 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be53c51dc83e5173157f1fa4471313025cf2f600c0bad4f77c441750f4d9f9e8 [2024-11-16 11:06:14,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 11:06:14,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 11:06:14,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 11:06:14,332 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 11:06:14,333 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 11:06:14,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c [2024-11-16 11:06:15,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 11:06:16,059 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 11:06:16,059 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c [2024-11-16 11:06:16,070 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a9ae6ed3/5cd89ff0a4b14438824ef2eee4879729/FLAGd060886b3 [2024-11-16 11:06:16,083 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a9ae6ed3/5cd89ff0a4b14438824ef2eee4879729 [2024-11-16 11:06:16,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 11:06:16,088 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 11:06:16,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 11:06:16,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 11:06:16,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 11:06:16,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772701b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16, skipping insertion in model container [2024-11-16 11:06:16,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 11:06:16,331 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c[1247,1260] [2024-11-16 11:06:16,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 11:06:16,493 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 11:06:16,505 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c[1247,1260] [2024-11-16 11:06:16,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 11:06:16,620 INFO L204 MainTranslator]: Completed translation [2024-11-16 11:06:16,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16 WrapperNode [2024-11-16 11:06:16,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 11:06:16,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 11:06:16,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 11:06:16,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 11:06:16,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,754 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 783 [2024-11-16 11:06:16,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 11:06:16,755 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 11:06:16,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 11:06:16,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 11:06:16,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,795 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,840 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 11:06:16,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,864 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 11:06:16,899 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 11:06:16,899 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 11:06:16,899 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 11:06:16,901 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (1/1) ... [2024-11-16 11:06:16,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 11:06:16,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:06:16,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 11:06:16,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 11:06:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 11:06:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 11:06:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 11:06:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 11:06:17,136 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 11:06:17,138 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 11:06:18,191 INFO L? ?]: Removed 472 outVars from TransFormulas that were not future-live. [2024-11-16 11:06:18,191 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 11:06:18,266 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 11:06:18,266 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 11:06:18,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:06:18 BoogieIcfgContainer [2024-11-16 11:06:18,266 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 11:06:18,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 11:06:18,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 11:06:18,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 11:06:18,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:06:16" (1/3) ... [2024-11-16 11:06:18,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188ed119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:06:18, skipping insertion in model container [2024-11-16 11:06:18,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:06:16" (2/3) ... [2024-11-16 11:06:18,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188ed119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:06:18, skipping insertion in model container [2024-11-16 11:06:18,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:06:18" (3/3) ... [2024-11-16 11:06:18,275 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vlunc.c [2024-11-16 11:06:18,292 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 11:06:18,293 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 11:06:18,354 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 11:06:18,361 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;@2ff809f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 11:06:18,361 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 11:06:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 179 states have (on average 1.4860335195530727) internal successors, (266), 180 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 11:06:18,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:18,376 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] [2024-11-16 11:06:18,377 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:18,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:18,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2121859109, now seen corresponding path program 1 times [2024-11-16 11:06:18,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:18,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787365070] [2024-11-16 11:06:18,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:18,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:19,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:19,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787365070] [2024-11-16 11:06:19,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787365070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:19,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:19,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:06:19,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248356702] [2024-11-16 11:06:19,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:19,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:06:19,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:06:19,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:06:19,497 INFO L87 Difference]: Start difference. First operand has 181 states, 179 states have (on average 1.4860335195530727) internal successors, (266), 180 states have internal predecessors, (266), 0 states have call successors, (0), 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 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:19,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:19,690 INFO L93 Difference]: Finished difference Result 333 states and 493 transitions. [2024-11-16 11:06:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:06:19,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-16 11:06:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:19,714 INFO L225 Difference]: With dead ends: 333 [2024-11-16 11:06:19,715 INFO L226 Difference]: Without dead ends: 178 [2024-11-16 11:06:19,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:06:19,725 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:19,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 643 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:06:19,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-16 11:06:19,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-16 11:06:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.4802259887005649) internal successors, (262), 177 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 262 transitions. [2024-11-16 11:06:19,767 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 262 transitions. Word has length 70 [2024-11-16 11:06:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:19,767 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 262 transitions. [2024-11-16 11:06:19,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 262 transitions. [2024-11-16 11:06:19,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 11:06:19,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:19,771 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] [2024-11-16 11:06:19,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 11:06:19,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:19,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:19,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1208069492, now seen corresponding path program 1 times [2024-11-16 11:06:19,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:19,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087211635] [2024-11-16 11:06:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:19,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:20,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:20,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087211635] [2024-11-16 11:06:20,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087211635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:20,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:20,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:06:20,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271468999] [2024-11-16 11:06:20,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:20,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:06:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:06:20,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:06:20,173 INFO L87 Difference]: Start difference. First operand 178 states and 262 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:20,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:20,806 INFO L93 Difference]: Finished difference Result 662 states and 977 transitions. [2024-11-16 11:06:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:06:20,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 11:06:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:20,809 INFO L225 Difference]: With dead ends: 662 [2024-11-16 11:06:20,810 INFO L226 Difference]: Without dead ends: 322 [2024-11-16 11:06:20,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 11:06:20,815 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 1190 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:20,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 739 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 11:06:20,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-16 11:06:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 216. [2024-11-16 11:06:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.4790697674418605) internal successors, (318), 215 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 318 transitions. [2024-11-16 11:06:20,839 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 318 transitions. Word has length 71 [2024-11-16 11:06:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:20,840 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 318 transitions. [2024-11-16 11:06:20,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 318 transitions. [2024-11-16 11:06:20,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 11:06:20,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:20,843 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] [2024-11-16 11:06:20,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 11:06:20,843 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:20,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:20,844 INFO L85 PathProgramCache]: Analyzing trace with hash -695314869, now seen corresponding path program 1 times [2024-11-16 11:06:20,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:20,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45805755] [2024-11-16 11:06:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:20,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:21,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:21,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45805755] [2024-11-16 11:06:21,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45805755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:21,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:21,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:06:21,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250327578] [2024-11-16 11:06:21,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:21,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:06:21,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:06:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:06:21,170 INFO L87 Difference]: Start difference. First operand 216 states and 318 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:21,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:21,586 INFO L93 Difference]: Finished difference Result 498 states and 732 transitions. [2024-11-16 11:06:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:06:21,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2024-11-16 11:06:21,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:21,591 INFO L225 Difference]: With dead ends: 498 [2024-11-16 11:06:21,592 INFO L226 Difference]: Without dead ends: 346 [2024-11-16 11:06:21,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:06:21,594 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 812 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:21,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 540 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:06:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-16 11:06:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 248. [2024-11-16 11:06:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.4777327935222673) internal successors, (365), 247 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 365 transitions. [2024-11-16 11:06:21,619 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 365 transitions. Word has length 72 [2024-11-16 11:06:21,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:21,619 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 365 transitions. [2024-11-16 11:06:21,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:21,619 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 365 transitions. [2024-11-16 11:06:21,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 11:06:21,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:21,625 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] [2024-11-16 11:06:21,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 11:06:21,626 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:21,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:21,628 INFO L85 PathProgramCache]: Analyzing trace with hash 894628420, now seen corresponding path program 1 times [2024-11-16 11:06:21,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:21,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246816394] [2024-11-16 11:06:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:21,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:21,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:21,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246816394] [2024-11-16 11:06:21,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246816394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:21,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:21,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:06:21,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282250376] [2024-11-16 11:06:21,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:21,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:06:21,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:21,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:06:21,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:06:21,951 INFO L87 Difference]: Start difference. First operand 248 states and 365 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:22,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:22,477 INFO L93 Difference]: Finished difference Result 498 states and 731 transitions. [2024-11-16 11:06:22,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:06:22,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 11:06:22,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:22,480 INFO L225 Difference]: With dead ends: 498 [2024-11-16 11:06:22,480 INFO L226 Difference]: Without dead ends: 346 [2024-11-16 11:06:22,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:06:22,482 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 641 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:22,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 639 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 11:06:22,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-16 11:06:22,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 264. [2024-11-16 11:06:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.4752851711026616) internal successors, (388), 263 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:22,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 388 transitions. [2024-11-16 11:06:22,506 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 388 transitions. Word has length 73 [2024-11-16 11:06:22,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:22,507 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 388 transitions. [2024-11-16 11:06:22,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:22,507 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 388 transitions. [2024-11-16 11:06:22,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 11:06:22,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:22,509 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] [2024-11-16 11:06:22,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 11:06:22,510 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:22,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:22,510 INFO L85 PathProgramCache]: Analyzing trace with hash 667675479, now seen corresponding path program 1 times [2024-11-16 11:06:22,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:22,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445577727] [2024-11-16 11:06:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:22,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:22,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:22,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445577727] [2024-11-16 11:06:22,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445577727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:22,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:22,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:06:22,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362512853] [2024-11-16 11:06:22,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:22,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:06:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:06:22,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:06:22,765 INFO L87 Difference]: Start difference. First operand 264 states and 388 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:22,862 INFO L93 Difference]: Finished difference Result 418 states and 615 transitions. [2024-11-16 11:06:22,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:06:22,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-16 11:06:22,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:22,865 INFO L225 Difference]: With dead ends: 418 [2024-11-16 11:06:22,865 INFO L226 Difference]: Without dead ends: 266 [2024-11-16 11:06:22,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:06:22,867 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:22,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 640 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:06:22,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-16 11:06:22,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-16 11:06:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.471698113207547) internal successors, (390), 265 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 390 transitions. [2024-11-16 11:06:22,880 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 390 transitions. Word has length 74 [2024-11-16 11:06:22,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:22,881 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 390 transitions. [2024-11-16 11:06:22,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:22,883 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 390 transitions. [2024-11-16 11:06:22,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-16 11:06:22,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:22,884 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] [2024-11-16 11:06:22,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 11:06:22,884 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:22,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1029653003, now seen corresponding path program 1 times [2024-11-16 11:06:22,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:22,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678899660] [2024-11-16 11:06:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:22,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:23,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:23,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678899660] [2024-11-16 11:06:23,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678899660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:23,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:23,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:06:23,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720877321] [2024-11-16 11:06:23,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:23,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:06:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:06:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:23,555 INFO L87 Difference]: Start difference. First operand 266 states and 390 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:23,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:23,749 INFO L93 Difference]: Finished difference Result 425 states and 624 transitions. [2024-11-16 11:06:23,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:06:23,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-16 11:06:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:23,753 INFO L225 Difference]: With dead ends: 425 [2024-11-16 11:06:23,754 INFO L226 Difference]: Without dead ends: 271 [2024-11-16 11:06:23,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:23,755 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 1 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:23,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1255 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:06:23,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-16 11:06:23,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-11-16 11:06:23,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.4666666666666666) internal successors, (396), 270 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) [2024-11-16 11:06:23,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 396 transitions. [2024-11-16 11:06:23,768 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 396 transitions. Word has length 75 [2024-11-16 11:06:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:23,769 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 396 transitions. [2024-11-16 11:06:23,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 396 transitions. [2024-11-16 11:06:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 11:06:23,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:23,771 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] [2024-11-16 11:06:23,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 11:06:23,772 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:23,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:23,772 INFO L85 PathProgramCache]: Analyzing trace with hash 850190738, now seen corresponding path program 1 times [2024-11-16 11:06:23,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:23,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992837398] [2024-11-16 11:06:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:23,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:24,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:24,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992837398] [2024-11-16 11:06:24,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992837398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:24,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:24,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:06:24,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385302349] [2024-11-16 11:06:24,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:24,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:06:24,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:24,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:06:24,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:24,117 INFO L87 Difference]: Start difference. First operand 271 states and 396 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:24,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:24,332 INFO L93 Difference]: Finished difference Result 465 states and 679 transitions. [2024-11-16 11:06:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:06:24,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-16 11:06:24,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:24,334 INFO L225 Difference]: With dead ends: 465 [2024-11-16 11:06:24,335 INFO L226 Difference]: Without dead ends: 299 [2024-11-16 11:06:24,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:24,336 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 12 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:24,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1253 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:06:24,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-16 11:06:24,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2024-11-16 11:06:24,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.4563758389261745) internal successors, (434), 298 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 434 transitions. [2024-11-16 11:06:24,344 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 434 transitions. Word has length 76 [2024-11-16 11:06:24,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:24,344 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 434 transitions. [2024-11-16 11:06:24,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 434 transitions. [2024-11-16 11:06:24,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 11:06:24,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:24,345 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] [2024-11-16 11:06:24,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 11:06:24,346 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:24,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:24,346 INFO L85 PathProgramCache]: Analyzing trace with hash -338374323, now seen corresponding path program 1 times [2024-11-16 11:06:24,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:24,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391018428] [2024-11-16 11:06:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:24,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:25,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:25,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:25,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391018428] [2024-11-16 11:06:25,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391018428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:25,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:25,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:06:25,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104834867] [2024-11-16 11:06:25,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:25,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:06:25,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:06:25,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:25,018 INFO L87 Difference]: Start difference. First operand 299 states and 434 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:25,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:25,253 INFO L93 Difference]: Finished difference Result 493 states and 714 transitions. [2024-11-16 11:06:25,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:06:25,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-16 11:06:25,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:25,256 INFO L225 Difference]: With dead ends: 493 [2024-11-16 11:06:25,256 INFO L226 Difference]: Without dead ends: 315 [2024-11-16 11:06:25,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:06:25,259 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 213 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:25,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1011 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:06:25,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-16 11:06:25,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2024-11-16 11:06:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.4458598726114649) internal successors, (454), 314 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 454 transitions. [2024-11-16 11:06:25,268 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 454 transitions. Word has length 76 [2024-11-16 11:06:25,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:25,269 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 454 transitions. [2024-11-16 11:06:25,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:25,269 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 454 transitions. [2024-11-16 11:06:25,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 11:06:25,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:25,270 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] [2024-11-16 11:06:25,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 11:06:25,271 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:25,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:25,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1738139605, now seen corresponding path program 1 times [2024-11-16 11:06:25,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:25,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691787061] [2024-11-16 11:06:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:25,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:25,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:25,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691787061] [2024-11-16 11:06:25,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691787061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:25,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:25,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:06:25,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111618368] [2024-11-16 11:06:25,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:25,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:06:25,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:25,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:06:25,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:25,626 INFO L87 Difference]: Start difference. First operand 315 states and 454 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:25,826 INFO L93 Difference]: Finished difference Result 579 states and 833 transitions. [2024-11-16 11:06:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:06:25,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-16 11:06:25,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:25,831 INFO L225 Difference]: With dead ends: 579 [2024-11-16 11:06:25,831 INFO L226 Difference]: Without dead ends: 353 [2024-11-16 11:06:25,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:25,832 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 12 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:25,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1253 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:06:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-16 11:06:25,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2024-11-16 11:06:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.4346590909090908) internal successors, (505), 352 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 505 transitions. [2024-11-16 11:06:25,844 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 505 transitions. Word has length 77 [2024-11-16 11:06:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:25,845 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 505 transitions. [2024-11-16 11:06:25,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 505 transitions. [2024-11-16 11:06:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 11:06:25,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:25,846 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] [2024-11-16 11:06:25,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 11:06:25,847 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:25,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1291571925, now seen corresponding path program 1 times [2024-11-16 11:06:25,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:25,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791203029] [2024-11-16 11:06:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:25,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:26,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791203029] [2024-11-16 11:06:26,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791203029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:26,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:26,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:06:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172413020] [2024-11-16 11:06:26,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:26,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:06:26,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:26,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:06:26,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:06:26,057 INFO L87 Difference]: Start difference. First operand 353 states and 505 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:26,228 INFO L93 Difference]: Finished difference Result 619 states and 881 transitions. [2024-11-16 11:06:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:06:26,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-16 11:06:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:26,231 INFO L225 Difference]: With dead ends: 619 [2024-11-16 11:06:26,231 INFO L226 Difference]: Without dead ends: 402 [2024-11-16 11:06:26,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:26,232 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 574 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:26,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 622 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:06:26,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-16 11:06:26,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 345. [2024-11-16 11:06:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.433139534883721) internal successors, (493), 344 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 493 transitions. [2024-11-16 11:06:26,240 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 493 transitions. Word has length 77 [2024-11-16 11:06:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:26,240 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 493 transitions. [2024-11-16 11:06:26,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 493 transitions. [2024-11-16 11:06:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 11:06:26,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:26,241 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] [2024-11-16 11:06:26,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 11:06:26,242 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:26,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:26,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1643227600, now seen corresponding path program 1 times [2024-11-16 11:06:26,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:26,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274718205] [2024-11-16 11:06:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:26,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:26,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:26,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274718205] [2024-11-16 11:06:26,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274718205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:26,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:26,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:06:26,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475396881] [2024-11-16 11:06:26,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:26,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:06:26,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:26,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:06:26,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:26,756 INFO L87 Difference]: Start difference. First operand 345 states and 493 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:26,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:26,983 INFO L93 Difference]: Finished difference Result 592 states and 845 transitions. [2024-11-16 11:06:26,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:06:26,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-16 11:06:26,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:26,985 INFO L225 Difference]: With dead ends: 592 [2024-11-16 11:06:26,985 INFO L226 Difference]: Without dead ends: 369 [2024-11-16 11:06:26,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:06:26,986 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 222 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:26,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1011 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:06:26,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-16 11:06:26,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2024-11-16 11:06:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.421195652173913) internal successors, (523), 368 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 523 transitions. [2024-11-16 11:06:26,994 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 523 transitions. Word has length 77 [2024-11-16 11:06:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:26,994 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 523 transitions. [2024-11-16 11:06:26,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 523 transitions. [2024-11-16 11:06:26,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-16 11:06:26,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:26,995 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] [2024-11-16 11:06:26,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 11:06:26,996 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:26,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:26,996 INFO L85 PathProgramCache]: Analyzing trace with hash 597251181, now seen corresponding path program 1 times [2024-11-16 11:06:26,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:26,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349072474] [2024-11-16 11:06:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:26,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:27,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:27,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349072474] [2024-11-16 11:06:27,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349072474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:27,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:27,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:06:27,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108406155] [2024-11-16 11:06:27,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:27,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:06:27,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:27,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:06:27,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:27,463 INFO L87 Difference]: Start difference. First operand 369 states and 523 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:27,740 INFO L93 Difference]: Finished difference Result 641 states and 908 transitions. [2024-11-16 11:06:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:06:27,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-16 11:06:27,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:27,743 INFO L225 Difference]: With dead ends: 641 [2024-11-16 11:06:27,743 INFO L226 Difference]: Without dead ends: 381 [2024-11-16 11:06:27,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:06:27,745 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 231 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:27,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1011 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:06:27,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-16 11:06:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-11-16 11:06:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.418421052631579) internal successors, (539), 380 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 539 transitions. [2024-11-16 11:06:27,754 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 539 transitions. Word has length 78 [2024-11-16 11:06:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:27,755 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 539 transitions. [2024-11-16 11:06:27,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:27,755 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 539 transitions. [2024-11-16 11:06:27,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-16 11:06:27,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:27,756 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] [2024-11-16 11:06:27,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 11:06:27,757 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:27,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:27,757 INFO L85 PathProgramCache]: Analyzing trace with hash -751060174, now seen corresponding path program 1 times [2024-11-16 11:06:27,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:27,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29962764] [2024-11-16 11:06:27,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:27,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:28,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:28,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:28,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29962764] [2024-11-16 11:06:28,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29962764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:28,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:28,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:06:28,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841160921] [2024-11-16 11:06:28,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:28,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:06:28,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:28,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:06:28,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:06:28,013 INFO L87 Difference]: Start difference. First operand 381 states and 539 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:28,176 INFO L93 Difference]: Finished difference Result 670 states and 941 transitions. [2024-11-16 11:06:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:06:28,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-16 11:06:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:28,178 INFO L225 Difference]: With dead ends: 670 [2024-11-16 11:06:28,178 INFO L226 Difference]: Without dead ends: 404 [2024-11-16 11:06:28,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:28,179 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 539 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:28,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 622 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:06:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-16 11:06:28,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 355. [2024-11-16 11:06:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.4152542372881356) internal successors, (501), 354 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 501 transitions. [2024-11-16 11:06:28,189 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 501 transitions. Word has length 78 [2024-11-16 11:06:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:28,189 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 501 transitions. [2024-11-16 11:06:28,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:28,190 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 501 transitions. [2024-11-16 11:06:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-16 11:06:28,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:28,191 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] [2024-11-16 11:06:28,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 11:06:28,191 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:28,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:28,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2096918478, now seen corresponding path program 1 times [2024-11-16 11:06:28,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:28,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527859498] [2024-11-16 11:06:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:28,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:28,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:28,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527859498] [2024-11-16 11:06:28,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527859498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:28,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:28,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:06:28,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998578399] [2024-11-16 11:06:28,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:28,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:06:28,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:28,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:06:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:28,480 INFO L87 Difference]: Start difference. First operand 355 states and 501 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:28,671 INFO L93 Difference]: Finished difference Result 687 states and 968 transitions. [2024-11-16 11:06:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:06:28,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-16 11:06:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:28,673 INFO L225 Difference]: With dead ends: 687 [2024-11-16 11:06:28,674 INFO L226 Difference]: Without dead ends: 405 [2024-11-16 11:06:28,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:28,675 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 13 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:28,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1253 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:06:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-16 11:06:28,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2024-11-16 11:06:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.4084158415841583) internal successors, (569), 404 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:28,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 569 transitions. [2024-11-16 11:06:28,683 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 569 transitions. Word has length 78 [2024-11-16 11:06:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:28,684 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 569 transitions. [2024-11-16 11:06:28,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 569 transitions. [2024-11-16 11:06:28,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 11:06:28,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:28,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:06:28,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 11:06:28,685 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:28,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:28,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1424445089, now seen corresponding path program 1 times [2024-11-16 11:06:28,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:28,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34942392] [2024-11-16 11:06:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:28,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:28,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34942392] [2024-11-16 11:06:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34942392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:28,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:28,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:06:28,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562367400] [2024-11-16 11:06:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:28,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:06:28,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:06:28,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:06:28,897 INFO L87 Difference]: Start difference. First operand 405 states and 569 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:29,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:29,058 INFO L93 Difference]: Finished difference Result 740 states and 1029 transitions. [2024-11-16 11:06:29,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:06:29,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-16 11:06:29,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:29,060 INFO L225 Difference]: With dead ends: 740 [2024-11-16 11:06:29,060 INFO L226 Difference]: Without dead ends: 428 [2024-11-16 11:06:29,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:29,061 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 527 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:29,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 622 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:06:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-16 11:06:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 379. [2024-11-16 11:06:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.3994708994708995) internal successors, (529), 378 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 529 transitions. [2024-11-16 11:06:29,071 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 529 transitions. Word has length 79 [2024-11-16 11:06:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:29,072 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 529 transitions. [2024-11-16 11:06:29,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 529 transitions. [2024-11-16 11:06:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 11:06:29,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:29,073 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] [2024-11-16 11:06:29,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 11:06:29,073 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:29,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:29,074 INFO L85 PathProgramCache]: Analyzing trace with hash -544341879, now seen corresponding path program 1 times [2024-11-16 11:06:29,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:29,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826711788] [2024-11-16 11:06:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:29,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:29,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:29,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826711788] [2024-11-16 11:06:29,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826711788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:29,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:29,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:06:29,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739252474] [2024-11-16 11:06:29,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:29,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:06:29,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:06:29,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:29,376 INFO L87 Difference]: Start difference. First operand 379 states and 529 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:29,572 INFO L93 Difference]: Finished difference Result 739 states and 1030 transitions. [2024-11-16 11:06:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:06:29,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-16 11:06:29,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:29,574 INFO L225 Difference]: With dead ends: 739 [2024-11-16 11:06:29,574 INFO L226 Difference]: Without dead ends: 417 [2024-11-16 11:06:29,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:29,575 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 12 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:29,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1253 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:06:29,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-16 11:06:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2024-11-16 11:06:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.3942307692307692) internal successors, (580), 416 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:29,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 580 transitions. [2024-11-16 11:06:29,585 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 580 transitions. Word has length 79 [2024-11-16 11:06:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:29,585 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 580 transitions. [2024-11-16 11:06:29,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:29,585 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 580 transitions. [2024-11-16 11:06:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 11:06:29,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:29,586 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] [2024-11-16 11:06:29,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 11:06:29,586 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:29,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:29,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1641951570, now seen corresponding path program 1 times [2024-11-16 11:06:29,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:29,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619285730] [2024-11-16 11:06:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:29,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:30,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:30,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619285730] [2024-11-16 11:06:30,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619285730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:30,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:30,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:06:30,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651627293] [2024-11-16 11:06:30,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:30,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:06:30,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:30,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:06:30,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:30,095 INFO L87 Difference]: Start difference. First operand 417 states and 580 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:30,334 INFO L93 Difference]: Finished difference Result 762 states and 1058 transitions. [2024-11-16 11:06:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:06:30,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-16 11:06:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:30,337 INFO L225 Difference]: With dead ends: 762 [2024-11-16 11:06:30,337 INFO L226 Difference]: Without dead ends: 441 [2024-11-16 11:06:30,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:06:30,338 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 239 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:30,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1010 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:06:30,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2024-11-16 11:06:30,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2024-11-16 11:06:30,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.3863636363636365) internal successors, (610), 440 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 610 transitions. [2024-11-16 11:06:30,347 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 610 transitions. Word has length 79 [2024-11-16 11:06:30,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:30,347 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 610 transitions. [2024-11-16 11:06:30,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:30,347 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 610 transitions. [2024-11-16 11:06:30,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 11:06:30,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:30,348 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] [2024-11-16 11:06:30,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 11:06:30,348 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:30,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:30,350 INFO L85 PathProgramCache]: Analyzing trace with hash 42699986, now seen corresponding path program 1 times [2024-11-16 11:06:30,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:30,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656977214] [2024-11-16 11:06:30,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:30,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:30,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:30,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656977214] [2024-11-16 11:06:30,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656977214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:30,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:30,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:06:30,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496738676] [2024-11-16 11:06:30,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:30,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:06:30,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:30,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:06:30,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:06:30,544 INFO L87 Difference]: Start difference. First operand 441 states and 610 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:30,664 INFO L93 Difference]: Finished difference Result 834 states and 1154 transitions. [2024-11-16 11:06:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:06:30,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-16 11:06:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:30,666 INFO L225 Difference]: With dead ends: 834 [2024-11-16 11:06:30,667 INFO L226 Difference]: Without dead ends: 473 [2024-11-16 11:06:30,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:06:30,668 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 12 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:30,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 851 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:06:30,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-16 11:06:30,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2024-11-16 11:06:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.3855932203389831) internal successors, (654), 472 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 654 transitions. [2024-11-16 11:06:30,676 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 654 transitions. Word has length 80 [2024-11-16 11:06:30,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:30,677 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 654 transitions. [2024-11-16 11:06:30,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:30,677 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 654 transitions. [2024-11-16 11:06:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 11:06:30,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:30,678 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] [2024-11-16 11:06:30,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 11:06:30,678 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:30,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash -967474734, now seen corresponding path program 1 times [2024-11-16 11:06:30,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:30,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347665086] [2024-11-16 11:06:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:30,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:30,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:30,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347665086] [2024-11-16 11:06:30,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347665086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:30,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:30,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:06:30,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764633090] [2024-11-16 11:06:30,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:30,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:06:30,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:30,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:06:30,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:06:30,883 INFO L87 Difference]: Start difference. First operand 473 states and 654 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:31,045 INFO L93 Difference]: Finished difference Result 868 states and 1192 transitions. [2024-11-16 11:06:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:06:31,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-16 11:06:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:31,048 INFO L225 Difference]: With dead ends: 868 [2024-11-16 11:06:31,048 INFO L226 Difference]: Without dead ends: 488 [2024-11-16 11:06:31,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:31,049 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 492 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:31,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 622 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:06:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-11-16 11:06:31,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 447. [2024-11-16 11:06:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.3811659192825112) internal successors, (616), 446 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 616 transitions. [2024-11-16 11:06:31,059 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 616 transitions. Word has length 80 [2024-11-16 11:06:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:31,060 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 616 transitions. [2024-11-16 11:06:31,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 616 transitions. [2024-11-16 11:06:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 11:06:31,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:31,061 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] [2024-11-16 11:06:31,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 11:06:31,062 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:31,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:31,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1917038775, now seen corresponding path program 1 times [2024-11-16 11:06:31,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:31,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411226888] [2024-11-16 11:06:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:31,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:31,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:31,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411226888] [2024-11-16 11:06:31,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411226888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:31,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:31,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:06:31,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057420829] [2024-11-16 11:06:31,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:31,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:06:31,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:31,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:06:31,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:06:31,534 INFO L87 Difference]: Start difference. First operand 447 states and 616 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:31,730 INFO L93 Difference]: Finished difference Result 841 states and 1159 transitions. [2024-11-16 11:06:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:06:31,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-16 11:06:31,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:31,733 INFO L225 Difference]: With dead ends: 841 [2024-11-16 11:06:31,733 INFO L226 Difference]: Without dead ends: 471 [2024-11-16 11:06:31,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:06:31,735 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 248 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:31,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 811 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:06:31,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-16 11:06:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2024-11-16 11:06:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.3787234042553191) internal successors, (648), 470 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 648 transitions. [2024-11-16 11:06:31,748 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 648 transitions. Word has length 80 [2024-11-16 11:06:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:31,748 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 648 transitions. [2024-11-16 11:06:31,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 648 transitions. [2024-11-16 11:06:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 11:06:31,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:31,749 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:06:31,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 11:06:31,750 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:31,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:31,751 INFO L85 PathProgramCache]: Analyzing trace with hash 916986901, now seen corresponding path program 1 times [2024-11-16 11:06:31,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:31,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851291729] [2024-11-16 11:06:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:31,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851291729] [2024-11-16 11:06:32,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851291729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:32,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:32,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:06:32,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987124976] [2024-11-16 11:06:32,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:32,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:06:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:32,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:06:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:06:32,145 INFO L87 Difference]: Start difference. First operand 471 states and 648 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:32,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:32,331 INFO L93 Difference]: Finished difference Result 892 states and 1225 transitions. [2024-11-16 11:06:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:06:32,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-16 11:06:32,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:32,334 INFO L225 Difference]: With dead ends: 892 [2024-11-16 11:06:32,335 INFO L226 Difference]: Without dead ends: 483 [2024-11-16 11:06:32,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:06:32,336 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 254 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:32,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 811 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:06:32,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-16 11:06:32,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2024-11-16 11:06:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3775933609958506) internal successors, (664), 482 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 664 transitions. [2024-11-16 11:06:32,347 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 664 transitions. Word has length 81 [2024-11-16 11:06:32,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:32,347 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 664 transitions. [2024-11-16 11:06:32,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 664 transitions. [2024-11-16 11:06:32,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 11:06:32,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:32,348 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] [2024-11-16 11:06:32,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 11:06:32,349 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:32,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:32,349 INFO L85 PathProgramCache]: Analyzing trace with hash -7823489, now seen corresponding path program 1 times [2024-11-16 11:06:32,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:32,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180380157] [2024-11-16 11:06:32,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:32,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:32,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:32,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180380157] [2024-11-16 11:06:32,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180380157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:32,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:32,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:06:32,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429687781] [2024-11-16 11:06:32,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:32,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:06:32,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:32,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:06:32,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:06:32,550 INFO L87 Difference]: Start difference. First operand 483 states and 664 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:32,707 INFO L93 Difference]: Finished difference Result 917 states and 1250 transitions. [2024-11-16 11:06:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:06:32,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-16 11:06:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:32,711 INFO L225 Difference]: With dead ends: 917 [2024-11-16 11:06:32,712 INFO L226 Difference]: Without dead ends: 498 [2024-11-16 11:06:32,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:32,713 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 480 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:32,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 622 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:06:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-16 11:06:32,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 457. [2024-11-16 11:06:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.368421052631579) internal successors, (624), 456 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 624 transitions. [2024-11-16 11:06:32,723 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 624 transitions. Word has length 81 [2024-11-16 11:06:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:32,723 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 624 transitions. [2024-11-16 11:06:32,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:32,724 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 624 transitions. [2024-11-16 11:06:32,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 11:06:32,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:32,724 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] [2024-11-16 11:06:32,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-16 11:06:32,725 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:32,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:32,725 INFO L85 PathProgramCache]: Analyzing trace with hash 95040316, now seen corresponding path program 1 times [2024-11-16 11:06:32,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:32,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233835276] [2024-11-16 11:06:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:32,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:32,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:32,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233835276] [2024-11-16 11:06:32,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233835276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:06:32,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:06:32,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:06:32,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908405731] [2024-11-16 11:06:32,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:06:32,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:06:32,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:32,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:06:32,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:06:32,926 INFO L87 Difference]: Start difference. First operand 457 states and 624 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:33,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:33,075 INFO L93 Difference]: Finished difference Result 839 states and 1146 transitions. [2024-11-16 11:06:33,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:06:33,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2024-11-16 11:06:33,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:33,077 INFO L225 Difference]: With dead ends: 839 [2024-11-16 11:06:33,077 INFO L226 Difference]: Without dead ends: 420 [2024-11-16 11:06:33,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:06:33,079 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 428 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:33,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 622 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:06:33,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-16 11:06:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 399. [2024-11-16 11:06:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.3819095477386936) internal successors, (550), 398 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 550 transitions. [2024-11-16 11:06:33,089 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 550 transitions. Word has length 82 [2024-11-16 11:06:33,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:33,090 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 550 transitions. [2024-11-16 11:06:33,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:33,090 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 550 transitions. [2024-11-16 11:06:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-16 11:06:33,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:33,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:06:33,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-16 11:06:33,092 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:33,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:33,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1311955261, now seen corresponding path program 1 times [2024-11-16 11:06:33,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:33,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238807467] [2024-11-16 11:06:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:33,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:35,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:35,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238807467] [2024-11-16 11:06:35,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238807467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:06:35,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921933344] [2024-11-16 11:06:35,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:35,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:06:35,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:06:35,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:06:35,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 11:06:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:35,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-16 11:06:35,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:06:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 11:06:37,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:06:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 11:06:38,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921933344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:06:38,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:06:38,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 13] total 31 [2024-11-16 11:06:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034864443] [2024-11-16 11:06:38,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:06:38,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 11:06:38,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:38,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 11:06:38,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2024-11-16 11:06:38,605 INFO L87 Difference]: Start difference. First operand 399 states and 550 transitions. Second operand has 31 states, 31 states have (on average 12.64516129032258) internal successors, (392), 31 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) [2024-11-16 11:06:43,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:43,296 INFO L93 Difference]: Finished difference Result 1697 states and 2342 transitions. [2024-11-16 11:06:43,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-16 11:06:43,297 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 12.64516129032258) internal successors, (392), 31 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) Word has length 152 [2024-11-16 11:06:43,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:43,302 INFO L225 Difference]: With dead ends: 1697 [2024-11-16 11:06:43,302 INFO L226 Difference]: Without dead ends: 1380 [2024-11-16 11:06:43,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2248 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1015, Invalid=7915, Unknown=0, NotChecked=0, Total=8930 [2024-11-16 11:06:43,308 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 3242 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 4443 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3242 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 4467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:43,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3242 Valid, 2573 Invalid, 4467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4443 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-16 11:06:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2024-11-16 11:06:43,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 569. [2024-11-16 11:06:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.3838028169014085) internal successors, (786), 568 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 786 transitions. [2024-11-16 11:06:43,325 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 786 transitions. Word has length 152 [2024-11-16 11:06:43,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:43,326 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 786 transitions. [2024-11-16 11:06:43,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 12.64516129032258) internal successors, (392), 31 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) [2024-11-16 11:06:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 786 transitions. [2024-11-16 11:06:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-16 11:06:43,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:43,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:06:43,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 11:06:43,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-16 11:06:43,533 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:43,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:43,534 INFO L85 PathProgramCache]: Analyzing trace with hash -694068278, now seen corresponding path program 1 times [2024-11-16 11:06:43,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:43,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052827137] [2024-11-16 11:06:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:43,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:45,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:45,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052827137] [2024-11-16 11:06:45,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052827137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:06:45,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289583815] [2024-11-16 11:06:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:45,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:06:45,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:06:45,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:06:45,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 11:06:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:46,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 11:06:46,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:06:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:46,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:06:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 40 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:47,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289583815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:06:47,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:06:47,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6] total 20 [2024-11-16 11:06:47,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637811155] [2024-11-16 11:06:47,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:06:47,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 11:06:47,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:47,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 11:06:47,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-16 11:06:47,112 INFO L87 Difference]: Start difference. First operand 569 states and 786 transitions. Second operand has 20 states, 20 states have (on average 19.55) internal successors, (391), 20 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:49,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:49,363 INFO L93 Difference]: Finished difference Result 3661 states and 5018 transitions. [2024-11-16 11:06:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-16 11:06:49,364 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.55) internal successors, (391), 20 states have internal predecessors, (391), 0 states have call successors, (0), 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 153 [2024-11-16 11:06:49,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:49,378 INFO L225 Difference]: With dead ends: 3661 [2024-11-16 11:06:49,379 INFO L226 Difference]: Without dead ends: 3174 [2024-11-16 11:06:49,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=515, Invalid=2565, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 11:06:49,384 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 4196 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4196 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 2451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:49,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4196 Valid, 1989 Invalid, 2451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2433 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 11:06:49,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2024-11-16 11:06:49,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 1117. [2024-11-16 11:06:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 1.385304659498208) internal successors, (1546), 1116 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:49,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1546 transitions. [2024-11-16 11:06:49,432 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1546 transitions. Word has length 153 [2024-11-16 11:06:49,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:49,432 INFO L471 AbstractCegarLoop]: Abstraction has 1117 states and 1546 transitions. [2024-11-16 11:06:49,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.55) internal successors, (391), 20 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1546 transitions. [2024-11-16 11:06:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-16 11:06:49,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:49,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:06:49,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 11:06:49,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-16 11:06:49,637 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:49,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:49,637 INFO L85 PathProgramCache]: Analyzing trace with hash -259135805, now seen corresponding path program 1 times [2024-11-16 11:06:49,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:49,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524274017] [2024-11-16 11:06:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:49,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 31 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:50,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:50,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524274017] [2024-11-16 11:06:50,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524274017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:06:50,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725275747] [2024-11-16 11:06:50,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:50,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:06:50,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:06:50,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:06:50,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 11:06:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:50,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 11:06:50,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:06:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 47 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:51,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:06:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 31 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:51,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725275747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:06:51,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:06:51,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 8] total 17 [2024-11-16 11:06:51,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837585927] [2024-11-16 11:06:51,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:06:51,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 11:06:51,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:51,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 11:06:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-16 11:06:51,857 INFO L87 Difference]: Start difference. First operand 1117 states and 1546 transitions. Second operand has 17 states, 17 states have (on average 19.58823529411765) internal successors, (333), 17 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:52,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:52,612 INFO L93 Difference]: Finished difference Result 2753 states and 3810 transitions. [2024-11-16 11:06:52,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 11:06:52,613 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.58823529411765) internal successors, (333), 17 states have internal predecessors, (333), 0 states have call successors, (0), 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 154 [2024-11-16 11:06:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:52,619 INFO L225 Difference]: With dead ends: 2753 [2024-11-16 11:06:52,619 INFO L226 Difference]: Without dead ends: 1718 [2024-11-16 11:06:52,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 296 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-16 11:06:52,621 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 793 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:52,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1189 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 11:06:52,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2024-11-16 11:06:52,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1653. [2024-11-16 11:06:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1652 states have (on average 1.37409200968523) internal successors, (2270), 1652 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2270 transitions. [2024-11-16 11:06:52,658 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2270 transitions. Word has length 154 [2024-11-16 11:06:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:52,659 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2270 transitions. [2024-11-16 11:06:52,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.58823529411765) internal successors, (333), 17 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2270 transitions. [2024-11-16 11:06:52,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-16 11:06:52,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:52,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:06:52,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 11:06:52,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:06:52,864 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:52,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash 792215793, now seen corresponding path program 1 times [2024-11-16 11:06:52,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:52,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915872415] [2024-11-16 11:06:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:52,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:54,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:06:54,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915872415] [2024-11-16 11:06:54,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915872415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:06:54,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458938718] [2024-11-16 11:06:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:54,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:06:54,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:06:54,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:06:54,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 11:06:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:06:55,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 11:06:55,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:06:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:55,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:06:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:06:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458938718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:06:55,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:06:55,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 21 [2024-11-16 11:06:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653859327] [2024-11-16 11:06:55,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:06:55,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 11:06:55,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:06:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 11:06:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2024-11-16 11:06:55,782 INFO L87 Difference]: Start difference. First operand 1653 states and 2270 transitions. Second operand has 21 states, 21 states have (on average 14.142857142857142) internal successors, (297), 21 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:57,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:06:57,069 INFO L93 Difference]: Finished difference Result 5173 states and 7038 transitions. [2024-11-16 11:06:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 11:06:57,071 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 14.142857142857142) internal successors, (297), 21 states have internal predecessors, (297), 0 states have call successors, (0), 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 154 [2024-11-16 11:06:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:06:57,082 INFO L225 Difference]: With dead ends: 5173 [2024-11-16 11:06:57,083 INFO L226 Difference]: Without dead ends: 3602 [2024-11-16 11:06:57,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 306 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 11:06:57,086 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 2509 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:06:57,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2509 Valid, 2035 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 11:06:57,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2024-11-16 11:06:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 1549. [2024-11-16 11:06:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1548 states have (on average 1.3630490956072352) internal successors, (2110), 1548 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:57,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2110 transitions. [2024-11-16 11:06:57,136 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2110 transitions. Word has length 154 [2024-11-16 11:06:57,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:06:57,136 INFO L471 AbstractCegarLoop]: Abstraction has 1549 states and 2110 transitions. [2024-11-16 11:06:57,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.142857142857142) internal successors, (297), 21 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:06:57,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2110 transitions. [2024-11-16 11:06:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-16 11:06:57,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:06:57,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:06:57,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 11:06:57,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-16 11:06:57,341 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:06:57,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:06:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash -977863406, now seen corresponding path program 1 times [2024-11-16 11:06:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:06:57,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614035871] [2024-11-16 11:06:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:06:57,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:06:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:07:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:07:00,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:07:00,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614035871] [2024-11-16 11:07:00,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614035871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:07:00,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135052172] [2024-11-16 11:07:00,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:07:00,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:07:00,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:07:00,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:07:00,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 11:07:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:07:00,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 11:07:00,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:07:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:07:00,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:07:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:07:01,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135052172] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 11:07:01,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 11:07:01,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 7] total 22 [2024-11-16 11:07:01,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919788512] [2024-11-16 11:07:01,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:07:01,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 11:07:01,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:07:01,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 11:07:01,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-11-16 11:07:01,192 INFO L87 Difference]: Start difference. First operand 1549 states and 2110 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:07:01,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:07:01,566 INFO L93 Difference]: Finished difference Result 3269 states and 4442 transitions. [2024-11-16 11:07:01,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:07:01,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2024-11-16 11:07:01,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:07:01,571 INFO L225 Difference]: With dead ends: 3269 [2024-11-16 11:07:01,571 INFO L226 Difference]: Without dead ends: 1756 [2024-11-16 11:07:01,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-11-16 11:07:01,574 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 813 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:07:01,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 660 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:07:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2024-11-16 11:07:01,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1501. [2024-11-16 11:07:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1500 states have (on average 1.358) internal successors, (2037), 1500 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:07:01,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2037 transitions. [2024-11-16 11:07:01,596 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2037 transitions. Word has length 154 [2024-11-16 11:07:01,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:07:01,596 INFO L471 AbstractCegarLoop]: Abstraction has 1501 states and 2037 transitions. [2024-11-16 11:07:01,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:07:01,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2037 transitions. [2024-11-16 11:07:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-16 11:07:01,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:07:01,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:07:01,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 11:07:01,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-16 11:07:01,800 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:07:01,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:07:01,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1197375766, now seen corresponding path program 1 times [2024-11-16 11:07:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:07:01,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274330390] [2024-11-16 11:07:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:07:01,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:07:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:07:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:07:03,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:07:03,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274330390] [2024-11-16 11:07:03,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274330390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:07:03,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272779002] [2024-11-16 11:07:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:07:03,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:07:03,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:07:03,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:07:03,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 11:07:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:07:03,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 11:07:03,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:07:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:07:03,926 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 11:07:03,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272779002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:07:03,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 11:07:03,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-16 11:07:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27028386] [2024-11-16 11:07:03,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:07:03,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:07:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:07:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:07:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-16 11:07:03,928 INFO L87 Difference]: Start difference. First operand 1501 states and 2037 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:07:04,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:07:04,289 INFO L93 Difference]: Finished difference Result 3853 states and 5209 transitions. [2024-11-16 11:07:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:07:04,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2024-11-16 11:07:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:07:04,297 INFO L225 Difference]: With dead ends: 3853 [2024-11-16 11:07:04,297 INFO L226 Difference]: Without dead ends: 2434 [2024-11-16 11:07:04,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-16 11:07:04,299 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 390 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:07:04,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 516 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:07:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2024-11-16 11:07:04,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1555. [2024-11-16 11:07:04,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 1.3494208494208495) internal successors, (2097), 1554 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:07:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2097 transitions. [2024-11-16 11:07:04,336 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2097 transitions. Word has length 155 [2024-11-16 11:07:04,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:07:04,336 INFO L471 AbstractCegarLoop]: Abstraction has 1555 states and 2097 transitions. [2024-11-16 11:07:04,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:07:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2097 transitions. [2024-11-16 11:07:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-16 11:07:04,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:07:04,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:07:04,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 11:07:04,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-16 11:07:04,544 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:07:04,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:07:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash 584501417, now seen corresponding path program 1 times [2024-11-16 11:07:04,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:07:04,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728456703] [2024-11-16 11:07:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:07:04,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:07:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:07:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:07:05,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:07:05,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728456703] [2024-11-16 11:07:05,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728456703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:07:05,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072109001] [2024-11-16 11:07:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:07:05,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:07:05,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:07:05,879 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:07:05,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 11:07:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:07:06,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-16 11:07:06,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:07:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:07:07,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:07:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 46 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:07:09,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072109001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:07:09,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:07:09,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24, 17] total 47 [2024-11-16 11:07:09,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961330685] [2024-11-16 11:07:09,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:07:09,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-16 11:07:09,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:07:09,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-16 11:07:09,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1803, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 11:07:09,007 INFO L87 Difference]: Start difference. First operand 1555 states and 2097 transitions. Second operand has 47 states, 47 states have (on average 8.914893617021276) internal successors, (419), 47 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:07:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:07:14,176 INFO L93 Difference]: Finished difference Result 5459 states and 7384 transitions. [2024-11-16 11:07:14,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-16 11:07:14,176 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.914893617021276) internal successors, (419), 47 states have internal predecessors, (419), 0 states have call successors, (0), 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 155 [2024-11-16 11:07:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:07:14,186 INFO L225 Difference]: With dead ends: 5459 [2024-11-16 11:07:14,187 INFO L226 Difference]: Without dead ends: 3986 [2024-11-16 11:07:14,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3665 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1604, Invalid=10606, Unknown=0, NotChecked=0, Total=12210 [2024-11-16 11:07:14,191 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 3220 mSDsluCounter, 4692 mSDsCounter, 0 mSdLazyCounter, 8764 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3220 SdHoareTripleChecker+Valid, 4870 SdHoareTripleChecker+Invalid, 8792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 8764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-16 11:07:14,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3220 Valid, 4870 Invalid, 8792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 8764 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-16 11:07:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2024-11-16 11:07:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 1555. [2024-11-16 11:07:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 1.333976833976834) internal successors, (2073), 1554 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:07:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2073 transitions. [2024-11-16 11:07:14,231 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2073 transitions. Word has length 155 [2024-11-16 11:07:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:07:14,232 INFO L471 AbstractCegarLoop]: Abstraction has 1555 states and 2073 transitions. [2024-11-16 11:07:14,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.914893617021276) internal successors, (419), 47 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 11:07:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2073 transitions. [2024-11-16 11:07:14,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-16 11:07:14,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:07:14,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:07:14,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 11:07:14,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:07:14,437 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:07:14,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:07:14,438 INFO L85 PathProgramCache]: Analyzing trace with hash 271755928, now seen corresponding path program 1 times [2024-11-16 11:07:14,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:07:14,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114928437] [2024-11-16 11:07:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:07:14,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:07:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:07:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 11:07:15,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:07:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114928437] [2024-11-16 11:07:15,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114928437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:07:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45649634] [2024-11-16 11:07:15,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:07:15,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:07:15,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:07:15,854 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 11:07:15,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 11:07:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:07:16,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 218 conjuncts are in the unsatisfiable core [2024-11-16 11:07:16,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:07:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:07:18,867 INFO L311 TraceCheckSpWp]: Computing backward predicates...