./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:10:04,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:10:04,107 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:10:04,111 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:10:04,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:10:04,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:10:04,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:10:04,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:10:04,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:10:04,139 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:10:04,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:10:04,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:10:04,140 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:10:04,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:10:04,141 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:10:04,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:10:04,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:10:04,145 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:10:04,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:10:04,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:10:04,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:10:04,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:10:04,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:10:04,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:10:04,148 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:10:04,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:10:04,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:10:04,148 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:10:04,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:10:04,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:10:04,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:10:04,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:10:04,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:10:04,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:10:04,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:10:04,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:10:04,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:10:04,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:10:04,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:10:04,152 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:10:04,152 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:10:04,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:10:04,152 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 [2024-11-22 02:10:04,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:10:04,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:10:04,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:10:04,444 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:10:04,444 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:10:04,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-11-22 02:10:05,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:10:05,788 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:10:05,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-11-22 02:10:05,795 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b120be05/fe443724c23b4b4b8e9f4b1cc99abbf6/FLAG5d7a0ad15 [2024-11-22 02:10:05,805 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b120be05/fe443724c23b4b4b8e9f4b1cc99abbf6 [2024-11-22 02:10:05,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:10:05,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:10:05,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:10:05,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:10:05,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:10:05,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:10:05" (1/1) ... [2024-11-22 02:10:05,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c39a1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:05, skipping insertion in model container [2024-11-22 02:10:05,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:10:05" (1/1) ... [2024-11-22 02:10:05,829 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:10:05,980 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/recursive-simple/fibo_2calls_8-1.c[947,960] [2024-11-22 02:10:05,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:10:05,994 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:10:06,008 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/recursive-simple/fibo_2calls_8-1.c[947,960] [2024-11-22 02:10:06,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:10:06,023 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:10:06,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06 WrapperNode [2024-11-22 02:10:06,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:10:06,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:10:06,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:10:06,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:10:06,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,048 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-22 02:10:06,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:10:06,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:10:06,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:10:06,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:10:06,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,065 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]. [2024-11-22 02:10:06,065 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,065 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:10:06,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:10:06,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:10:06,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:10:06,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (1/1) ... [2024-11-22 02:10:06,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:10:06,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:06,109 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) [2024-11-22 02:10:06,110 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 [2024-11-22 02:10:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:10:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:10:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-22 02:10:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-22 02:10:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-22 02:10:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-22 02:10:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:10:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:10:06,190 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:10:06,192 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:10:06,288 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-22 02:10:06,288 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:10:06,298 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:10:06,299 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:10:06,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:10:06 BoogieIcfgContainer [2024-11-22 02:10:06,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:10:06,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:10:06,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:10:06,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:10:06,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:10:05" (1/3) ... [2024-11-22 02:10:06,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ddf3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:10:06, skipping insertion in model container [2024-11-22 02:10:06,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:06" (2/3) ... [2024-11-22 02:10:06,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ddf3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:10:06, skipping insertion in model container [2024-11-22 02:10:06,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:10:06" (3/3) ... [2024-11-22 02:10:06,305 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2024-11-22 02:10:06,326 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:10:06,326 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:10:06,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:10:06,393 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;@33d27ff2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:10:06,393 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:10:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:10:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 02:10:06,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:06,401 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:06,402 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:06,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:06,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2024-11-22 02:10:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:06,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106663949] [2024-11-22 02:10:06,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:06,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:10:06,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:06,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106663949] [2024-11-22 02:10:06,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106663949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:10:06,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:10:06,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:10:06,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945756721] [2024-11-22 02:10:06,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:10:06,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:10:06,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:10:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:10:06,664 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:06,740 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-11-22 02:10:06,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:10:06,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-22 02:10:06,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:06,747 INFO L225 Difference]: With dead ends: 41 [2024-11-22 02:10:06,747 INFO L226 Difference]: Without dead ends: 29 [2024-11-22 02:10:06,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:10:06,752 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:06,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-22 02:10:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-22 02:10:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 02:10:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:10:06,790 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2024-11-22 02:10:06,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:06,790 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:10:06,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:06,790 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:10:06,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 02:10:06,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:06,791 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:06,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:10:06,792 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:06,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:06,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2024-11-22 02:10:06,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:06,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187224802] [2024-11-22 02:10:06,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:06,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:10:06,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:06,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187224802] [2024-11-22 02:10:06,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187224802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:10:06,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:10:06,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:10:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642766252] [2024-11-22 02:10:06,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:10:06,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:10:06,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:06,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:10:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:10:06,848 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:06,903 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-22 02:10:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:10:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-22 02:10:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:06,908 INFO L225 Difference]: With dead ends: 33 [2024-11-22 02:10:06,909 INFO L226 Difference]: Without dead ends: 29 [2024-11-22 02:10:06,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:10:06,910 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:06,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:10:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-22 02:10:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-22 02:10:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 02:10:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:10:06,925 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2024-11-22 02:10:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:06,926 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:10:06,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:10:06,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 02:10:06,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:06,927 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:06,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:10:06,927 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:06,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:06,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2024-11-22 02:10:06,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:06,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348865199] [2024-11-22 02:10:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:06,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:07,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348865199] [2024-11-22 02:10:07,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348865199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161248957] [2024-11-22 02:10:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:07,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:07,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:07,048 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) [2024-11-22 02:10:07,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:10:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:07,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:10:07,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:07,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:07,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161248957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:07,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:07,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-22 02:10:07,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442429380] [2024-11-22 02:10:07,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:07,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:10:07,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:07,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:10:07,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:10:07,341 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:10:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:07,475 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2024-11-22 02:10:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:10:07,475 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2024-11-22 02:10:07,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:07,476 INFO L225 Difference]: With dead ends: 55 [2024-11-22 02:10:07,477 INFO L226 Difference]: Without dead ends: 31 [2024-11-22 02:10:07,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:10:07,479 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:07,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 118 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:07,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-22 02:10:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-22 02:10:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-22 02:10:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-22 02:10:07,490 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2024-11-22 02:10:07,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:07,490 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-22 02:10:07,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:10:07,491 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-22 02:10:07,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 02:10:07,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:07,493 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:07,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 02:10:07,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:07,698 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:07,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2024-11-22 02:10:07,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:07,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498762388] [2024-11-22 02:10:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:07,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:07,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:07,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498762388] [2024-11-22 02:10:07,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498762388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:07,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202619467] [2024-11-22 02:10:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:07,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:07,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:07,778 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) [2024-11-22 02:10:07,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:10:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:07,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:10:07,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:07,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:08,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202619467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:08,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:08,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-22 02:10:08,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832307126] [2024-11-22 02:10:08,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:08,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:10:08,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:08,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:10:08,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:10:08,061 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:10:08,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:08,159 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-22 02:10:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:10:08,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2024-11-22 02:10:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:08,160 INFO L225 Difference]: With dead ends: 40 [2024-11-22 02:10:08,160 INFO L226 Difference]: Without dead ends: 36 [2024-11-22 02:10:08,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:10:08,163 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:08,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-22 02:10:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-22 02:10:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-22 02:10:08,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-22 02:10:08,175 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2024-11-22 02:10:08,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:08,175 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-22 02:10:08,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:10:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-22 02:10:08,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-22 02:10:08,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:08,177 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:08,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 02:10:08,377 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,SelfDestructingSolverStorable3 [2024-11-22 02:10:08,379 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:08,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:08,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2024-11-22 02:10:08,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:08,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991301000] [2024-11-22 02:10:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:08,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:10:08,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:08,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991301000] [2024-11-22 02:10:08,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991301000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:08,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134908480] [2024-11-22 02:10:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:08,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:08,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:08,463 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) [2024-11-22 02:10:08,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:10:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:08,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:10:08,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:10:08,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:10:08,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134908480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:08,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:08,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2024-11-22 02:10:08,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025158226] [2024-11-22 02:10:08,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:08,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 02:10:08,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:08,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 02:10:08,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:10:08,851 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:10:08,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:08,982 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2024-11-22 02:10:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:10:08,982 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2024-11-22 02:10:08,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:08,983 INFO L225 Difference]: With dead ends: 69 [2024-11-22 02:10:08,983 INFO L226 Difference]: Without dead ends: 38 [2024-11-22 02:10:08,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:10:08,985 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:08,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 146 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:08,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-22 02:10:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-22 02:10:09,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-22 02:10:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-22 02:10:09,003 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2024-11-22 02:10:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:09,004 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-22 02:10:09,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:10:09,004 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-22 02:10:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-22 02:10:09,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:09,005 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:09,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:09,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:09,210 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:09,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2024-11-22 02:10:09,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:09,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766611259] [2024-11-22 02:10:09,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:09,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:10:09,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:09,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766611259] [2024-11-22 02:10:09,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766611259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:09,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599733095] [2024-11-22 02:10:09,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:09,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:09,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:09,361 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) [2024-11-22 02:10:09,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:10:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:09,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:10:09,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:10:09,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:10:09,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599733095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:09,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:09,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2024-11-22 02:10:09,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552319960] [2024-11-22 02:10:09,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:09,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:10:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:10:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:10:09,752 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:10:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:10,211 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2024-11-22 02:10:10,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:10:10,212 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2024-11-22 02:10:10,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:10,214 INFO L225 Difference]: With dead ends: 101 [2024-11-22 02:10:10,215 INFO L226 Difference]: Without dead ends: 68 [2024-11-22 02:10:10,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:10:10,216 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:10,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 303 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:10:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-22 02:10:10,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-22 02:10:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-22 02:10:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2024-11-22 02:10:10,233 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2024-11-22 02:10:10,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:10,233 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2024-11-22 02:10:10,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:10:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2024-11-22 02:10:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-22 02:10:10,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:10,235 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2024-11-22 02:10:10,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 02:10:10,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:10,436 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:10,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:10,437 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2024-11-22 02:10:10,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:10,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910349380] [2024-11-22 02:10:10,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:10,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 02:10:10,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:10,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910349380] [2024-11-22 02:10:10,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910349380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:10,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755293809] [2024-11-22 02:10:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:10,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:10,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:10,539 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) [2024-11-22 02:10:10,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:10:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:10,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:10:10,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 02:10:10,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:10:11,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755293809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:11,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:11,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2024-11-22 02:10:11,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364991690] [2024-11-22 02:10:11,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:11,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:10:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:10:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:10:11,021 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:10:11,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:11,160 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2024-11-22 02:10:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:10:11,160 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) Word has length 51 [2024-11-22 02:10:11,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:11,162 INFO L225 Difference]: With dead ends: 102 [2024-11-22 02:10:11,162 INFO L226 Difference]: Without dead ends: 98 [2024-11-22 02:10:11,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:10:11,163 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:11,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 164 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:11,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-22 02:10:11,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2024-11-22 02:10:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.15) internal successors, (46), 44 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 11 states have return successors, (48), 16 states have call predecessors, (48), 12 states have call successors, (48) [2024-11-22 02:10:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2024-11-22 02:10:11,185 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2024-11-22 02:10:11,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:11,186 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2024-11-22 02:10:11,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:10:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2024-11-22 02:10:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 02:10:11,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:11,191 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:11,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 02:10:11,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:11,392 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:11,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2024-11-22 02:10:11,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:11,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780891892] [2024-11-22 02:10:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:11,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-22 02:10:11,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:11,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780891892] [2024-11-22 02:10:11,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780891892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:11,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145479614] [2024-11-22 02:10:11,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:11,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:11,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:11,568 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) [2024-11-22 02:10:11,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:10:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:11,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:10:11,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-22 02:10:11,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 102 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-22 02:10:12,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145479614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:12,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:12,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-11-22 02:10:12,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914464333] [2024-11-22 02:10:12,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:12,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:10:12,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:12,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:10:12,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:12,451 INFO L87 Difference]: Start difference. First operand 64 states and 106 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-22 02:10:12,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:12,933 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2024-11-22 02:10:12,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 02:10:12,933 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) Word has length 93 [2024-11-22 02:10:12,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:12,937 INFO L225 Difference]: With dead ends: 177 [2024-11-22 02:10:12,937 INFO L226 Difference]: Without dead ends: 104 [2024-11-22 02:10:12,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:10:12,942 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 96 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:12,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 325 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:10:12,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-22 02:10:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2024-11-22 02:10:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 16 states have call successors, (16), 8 states have call predecessors, (16), 14 states have return successors, (43), 20 states have call predecessors, (43), 16 states have call successors, (43) [2024-11-22 02:10:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2024-11-22 02:10:12,960 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 93 [2024-11-22 02:10:12,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:12,960 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2024-11-22 02:10:12,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-22 02:10:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2024-11-22 02:10:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 02:10:12,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:12,964 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:12,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:13,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:13,165 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:13,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:13,165 INFO L85 PathProgramCache]: Analyzing trace with hash 437944761, now seen corresponding path program 2 times [2024-11-22 02:10:13,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:13,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689544755] [2024-11-22 02:10:13,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:13,192 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:13,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 43 proven. 179 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2024-11-22 02:10:13,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:13,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689544755] [2024-11-22 02:10:13,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689544755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:13,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013989947] [2024-11-22 02:10:13,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:13,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:13,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:13,364 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) [2024-11-22 02:10:13,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:10:13,431 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:13,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:13,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:13,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 244 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-11-22 02:10:13,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-22 02:10:14,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013989947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:14,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:14,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 23 [2024-11-22 02:10:14,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390971076] [2024-11-22 02:10:14,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:14,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:10:14,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:10:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:14,590 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:10:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:14,814 INFO L93 Difference]: Finished difference Result 132 states and 227 transitions. [2024-11-22 02:10:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 02:10:14,815 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 159 [2024-11-22 02:10:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:14,816 INFO L225 Difference]: With dead ends: 132 [2024-11-22 02:10:14,816 INFO L226 Difference]: Without dead ends: 128 [2024-11-22 02:10:14,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 302 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:10:14,817 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:14,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 196 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-22 02:10:14,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2024-11-22 02:10:14,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 79 states have internal predecessors, (88), 21 states have call successors, (21), 8 states have call predecessors, (21), 19 states have return successors, (85), 30 states have call predecessors, (85), 21 states have call successors, (85) [2024-11-22 02:10:14,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 194 transitions. [2024-11-22 02:10:14,834 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 194 transitions. Word has length 159 [2024-11-22 02:10:14,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:14,834 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 194 transitions. [2024-11-22 02:10:14,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:10:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 194 transitions. [2024-11-22 02:10:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-22 02:10:14,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:14,837 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 18, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:14,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 02:10:15,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:15,042 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:15,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:15,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1279109938, now seen corresponding path program 2 times [2024-11-22 02:10:15,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:15,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202824651] [2024-11-22 02:10:15,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:15,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:15,082 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:15,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 158 proven. 490 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-22 02:10:15,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:15,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202824651] [2024-11-22 02:10:15,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202824651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:15,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829680220] [2024-11-22 02:10:15,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:15,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:15,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:15,425 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) [2024-11-22 02:10:15,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:10:15,522 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:15,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:15,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:10:15,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 569 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2024-11-22 02:10:15,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 593 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-11-22 02:10:17,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829680220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:17,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:17,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 28 [2024-11-22 02:10:17,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88815777] [2024-11-22 02:10:17,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:17,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:10:17,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:17,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:10:17,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:10:17,196 INFO L87 Difference]: Start difference. First operand 118 states and 194 transitions. Second operand has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) [2024-11-22 02:10:17,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:17,806 INFO L93 Difference]: Finished difference Result 323 states and 666 transitions. [2024-11-22 02:10:17,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-22 02:10:17,806 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) Word has length 284 [2024-11-22 02:10:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:17,809 INFO L225 Difference]: With dead ends: 323 [2024-11-22 02:10:17,809 INFO L226 Difference]: Without dead ends: 214 [2024-11-22 02:10:17,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 547 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=446, Invalid=2310, Unknown=0, NotChecked=0, Total=2756 [2024-11-22 02:10:17,811 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 139 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:17,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 460 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:10:17,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-22 02:10:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 184. [2024-11-22 02:10:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 123 states have internal predecessors, (146), 35 states have call successors, (35), 17 states have call predecessors, (35), 25 states have return successors, (120), 43 states have call predecessors, (120), 35 states have call successors, (120) [2024-11-22 02:10:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2024-11-22 02:10:17,829 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 284 [2024-11-22 02:10:17,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:17,842 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2024-11-22 02:10:17,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) [2024-11-22 02:10:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2024-11-22 02:10:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2024-11-22 02:10:17,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:17,850 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 36, 35, 35, 27, 24, 24, 24, 24, 24, 24, 24, 19, 17, 17, 17, 17, 17, 17, 17, 12, 8, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:17,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 02:10:18,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 02:10:18,052 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:18,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:18,052 INFO L85 PathProgramCache]: Analyzing trace with hash -278566935, now seen corresponding path program 3 times [2024-11-22 02:10:18,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:18,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306076999] [2024-11-22 02:10:18,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:18,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:18,095 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:10:18,095 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9521 backedges. 1260 proven. 86 refuted. 0 times theorem prover too weak. 8175 trivial. 0 not checked. [2024-11-22 02:10:18,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:18,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306076999] [2024-11-22 02:10:18,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306076999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:18,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755319746] [2024-11-22 02:10:18,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:18,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:18,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:18,287 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:18,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:10:18,402 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:10:18,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:18,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:18,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9521 backedges. 1440 proven. 99 refuted. 0 times theorem prover too weak. 7982 trivial. 0 not checked. [2024-11-22 02:10:18,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9521 backedges. 1440 proven. 102 refuted. 0 times theorem prover too weak. 7979 trivial. 0 not checked. [2024-11-22 02:10:20,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755319746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:20,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:20,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 15] total 23 [2024-11-22 02:10:20,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028637594] [2024-11-22 02:10:20,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:20,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:10:20,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:20,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:10:20,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:20,085 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 13 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 13 states have call successors, (27) [2024-11-22 02:10:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:20,350 INFO L93 Difference]: Finished difference Result 422 states and 830 transitions. [2024-11-22 02:10:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 02:10:20,350 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 13 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 13 states have call successors, (27) Word has length 565 [2024-11-22 02:10:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:20,352 INFO L225 Difference]: With dead ends: 422 [2024-11-22 02:10:20,352 INFO L226 Difference]: Without dead ends: 223 [2024-11-22 02:10:20,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1115 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=1029, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 02:10:20,355 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 38 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:20,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 265 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:10:20,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-22 02:10:20,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 204. [2024-11-22 02:10:20,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 137 states have (on average 1.145985401459854) internal successors, (157), 136 states have internal predecessors, (157), 38 states have call successors, (38), 20 states have call predecessors, (38), 28 states have return successors, (133), 47 states have call predecessors, (133), 38 states have call successors, (133) [2024-11-22 02:10:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 328 transitions. [2024-11-22 02:10:20,369 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 328 transitions. Word has length 565 [2024-11-22 02:10:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:20,370 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 328 transitions. [2024-11-22 02:10:20,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 13 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 13 states have call successors, (27) [2024-11-22 02:10:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 328 transitions. [2024-11-22 02:10:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-11-22 02:10:20,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:20,373 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 23, 23, 20, 19, 13, 13, 13, 13, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 9, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:20,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:20,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:20,578 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:20,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:20,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1567558340, now seen corresponding path program 4 times [2024-11-22 02:10:20,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:20,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578355199] [2024-11-22 02:10:20,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:20,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:20,605 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:20,605 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3205 backedges. 137 proven. 649 refuted. 0 times theorem prover too weak. 2419 trivial. 0 not checked. [2024-11-22 02:10:20,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:20,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578355199] [2024-11-22 02:10:20,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578355199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:20,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647623787] [2024-11-22 02:10:20,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:20,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:20,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:20,840 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:20,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:10:20,962 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:20,962 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:20,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:10:20,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3205 backedges. 137 proven. 649 refuted. 0 times theorem prover too weak. 2419 trivial. 0 not checked. [2024-11-22 02:10:21,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3205 backedges. 137 proven. 670 refuted. 0 times theorem prover too weak. 2398 trivial. 0 not checked. [2024-11-22 02:10:22,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647623787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:22,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:22,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 19 [2024-11-22 02:10:22,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432375692] [2024-11-22 02:10:22,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:22,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 02:10:22,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:22,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 02:10:22,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-22 02:10:22,654 INFO L87 Difference]: Start difference. First operand 204 states and 328 transitions. Second operand has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 15 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 10 states have call predecessors, (24), 15 states have call successors, (24) [2024-11-22 02:10:22,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:22,837 INFO L93 Difference]: Finished difference Result 284 states and 538 transitions. [2024-11-22 02:10:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 02:10:22,838 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 15 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 10 states have call predecessors, (24), 15 states have call successors, (24) Word has length 337 [2024-11-22 02:10:22,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:22,841 INFO L225 Difference]: With dead ends: 284 [2024-11-22 02:10:22,841 INFO L226 Difference]: Without dead ends: 280 [2024-11-22 02:10:22,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 664 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:10:22,842 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 65 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:22,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 173 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:22,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-22 02:10:22,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 219. [2024-11-22 02:10:22,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 146 states have (on average 1.1369863013698631) internal successors, (166), 145 states have internal predecessors, (166), 41 states have call successors, (41), 20 states have call predecessors, (41), 31 states have return successors, (163), 53 states have call predecessors, (163), 41 states have call successors, (163) [2024-11-22 02:10:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 370 transitions. [2024-11-22 02:10:22,864 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 370 transitions. Word has length 337 [2024-11-22 02:10:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:22,864 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 370 transitions. [2024-11-22 02:10:22,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 15 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 10 states have call predecessors, (24), 15 states have call successors, (24) [2024-11-22 02:10:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 370 transitions. [2024-11-22 02:10:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-22 02:10:22,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:22,869 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 23, 23, 20, 20, 13, 13, 13, 13, 13, 13, 13, 11, 11, 11, 11, 11, 11, 11, 9, 7, 6, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:22,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 02:10:23,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 02:10:23,069 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:23,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:23,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1778994978, now seen corresponding path program 5 times [2024-11-22 02:10:23,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:23,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588966352] [2024-11-22 02:10:23,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:23,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:23,081 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:23,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3224 backedges. 178 proven. 514 refuted. 0 times theorem prover too weak. 2532 trivial. 0 not checked. [2024-11-22 02:10:23,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:23,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588966352] [2024-11-22 02:10:23,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588966352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:23,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010314277] [2024-11-22 02:10:23,160 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:23,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:23,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:23,162 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:23,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 02:10:23,264 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:23,264 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:23,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:10:23,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3224 backedges. 1006 proven. 19 refuted. 0 times theorem prover too weak. 2199 trivial. 0 not checked. [2024-11-22 02:10:23,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3224 backedges. 178 proven. 596 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2024-11-22 02:10:24,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010314277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:24,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:24,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 17 [2024-11-22 02:10:24,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299985922] [2024-11-22 02:10:24,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:24,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:10:24,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:24,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:10:24,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:10:24,265 INFO L87 Difference]: Start difference. First operand 219 states and 370 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (23), 6 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-22 02:10:24,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:24,402 INFO L93 Difference]: Finished difference Result 413 states and 770 transitions. [2024-11-22 02:10:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:10:24,402 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (23), 6 states have call predecessors, (23), 10 states have call successors, (23) Word has length 338 [2024-11-22 02:10:24,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:24,404 INFO L225 Difference]: With dead ends: 413 [2024-11-22 02:10:24,404 INFO L226 Difference]: Without dead ends: 171 [2024-11-22 02:10:24,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 665 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:24,407 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:24,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 246 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:24,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-22 02:10:24,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2024-11-22 02:10:24,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 114 states have (on average 1.1228070175438596) internal successors, (128), 112 states have internal predecessors, (128), 30 states have call successors, (30), 17 states have call predecessors, (30), 23 states have return successors, (124), 38 states have call predecessors, (124), 30 states have call successors, (124) [2024-11-22 02:10:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 282 transitions. [2024-11-22 02:10:24,419 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 282 transitions. Word has length 338 [2024-11-22 02:10:24,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:24,419 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 282 transitions. [2024-11-22 02:10:24,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 10 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (23), 6 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-22 02:10:24,419 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 282 transitions. [2024-11-22 02:10:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-22 02:10:24,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:24,422 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 25, 22, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 10, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:24,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 02:10:24,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 02:10:24,626 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:24,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:24,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1933855095, now seen corresponding path program 6 times [2024-11-22 02:10:24,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:24,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261075747] [2024-11-22 02:10:24,626 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:24,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:24,675 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-22 02:10:24,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 207 proven. 515 refuted. 0 times theorem prover too weak. 3957 trivial. 0 not checked. [2024-11-22 02:10:24,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261075747] [2024-11-22 02:10:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261075747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673247179] [2024-11-22 02:10:24,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:24,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:24,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:24,853 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:24,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 02:10:25,012 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-22 02:10:25,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:25,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:10:25,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 207 proven. 515 refuted. 0 times theorem prover too weak. 3957 trivial. 0 not checked. [2024-11-22 02:10:25,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4679 backedges. 207 proven. 525 refuted. 0 times theorem prover too weak. 3947 trivial. 0 not checked. [2024-11-22 02:10:26,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673247179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:26,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:26,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 13] total 15 [2024-11-22 02:10:26,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344763661] [2024-11-22 02:10:26,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:26,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 02:10:26,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 02:10:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:10:26,062 INFO L87 Difference]: Start difference. First operand 168 states and 282 transitions. Second operand has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 10 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-22 02:10:26,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:26,181 INFO L93 Difference]: Finished difference Result 210 states and 406 transitions. [2024-11-22 02:10:26,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:10:26,182 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 10 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 405 [2024-11-22 02:10:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:26,186 INFO L225 Difference]: With dead ends: 210 [2024-11-22 02:10:26,186 INFO L226 Difference]: Without dead ends: 206 [2024-11-22 02:10:26,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 802 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-22 02:10:26,187 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:26,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 140 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-22 02:10:26,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 174. [2024-11-22 02:10:26,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 118 states have (on average 1.11864406779661) internal successors, (132), 116 states have internal predecessors, (132), 30 states have call successors, (30), 17 states have call predecessors, (30), 25 states have return successors, (135), 40 states have call predecessors, (135), 30 states have call successors, (135) [2024-11-22 02:10:26,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 297 transitions. [2024-11-22 02:10:26,204 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 297 transitions. Word has length 405 [2024-11-22 02:10:26,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:26,204 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 297 transitions. [2024-11-22 02:10:26,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 15 states have internal predecessors, (58), 10 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-22 02:10:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 297 transitions. [2024-11-22 02:10:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-11-22 02:10:26,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:26,207 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 35, 35, 30, 29, 20, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 17, 13, 10, 9, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:26,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:26,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 02:10:26,411 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:26,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2004476535, now seen corresponding path program 7 times [2024-11-22 02:10:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:26,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574487767] [2024-11-22 02:10:26,412 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 787 proven. 399 refuted. 0 times theorem prover too weak. 6459 trivial. 0 not checked. [2024-11-22 02:10:26,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:26,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574487767] [2024-11-22 02:10:26,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574487767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:26,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916067407] [2024-11-22 02:10:26,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:26,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:26,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:26,836 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:26,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 02:10:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:27,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:27,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 294 proven. 834 refuted. 0 times theorem prover too weak. 6517 trivial. 0 not checked. [2024-11-22 02:10:27,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 296 proven. 848 refuted. 0 times theorem prover too weak. 6501 trivial. 0 not checked. [2024-11-22 02:10:28,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916067407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:28,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:28,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 29 [2024-11-22 02:10:28,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677825151] [2024-11-22 02:10:28,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:28,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 02:10:28,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:28,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 02:10:28,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:10:28,575 INFO L87 Difference]: Start difference. First operand 174 states and 297 transitions. Second operand has 29 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 29 states have internal predecessors, (90), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 17 states have call predecessors, (33), 20 states have call successors, (33) [2024-11-22 02:10:29,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:29,133 INFO L93 Difference]: Finished difference Result 375 states and 692 transitions. [2024-11-22 02:10:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 02:10:29,133 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 29 states have internal predecessors, (90), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 17 states have call predecessors, (33), 20 states have call successors, (33) Word has length 513 [2024-11-22 02:10:29,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:29,136 INFO L225 Difference]: With dead ends: 375 [2024-11-22 02:10:29,136 INFO L226 Difference]: Without dead ends: 203 [2024-11-22 02:10:29,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 1007 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=433, Invalid=2647, Unknown=0, NotChecked=0, Total=3080 [2024-11-22 02:10:29,139 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 94 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:29,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 569 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:10:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-22 02:10:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 172. [2024-11-22 02:10:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 115 states have internal predecessors, (131), 33 states have call successors, (33), 19 states have call predecessors, (33), 21 states have return successors, (108), 37 states have call predecessors, (108), 33 states have call successors, (108) [2024-11-22 02:10:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 272 transitions. [2024-11-22 02:10:29,152 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 272 transitions. Word has length 513 [2024-11-22 02:10:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:29,152 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 272 transitions. [2024-11-22 02:10:29,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 29 states have internal predecessors, (90), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 17 states have call predecessors, (33), 20 states have call successors, (33) [2024-11-22 02:10:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 272 transitions. [2024-11-22 02:10:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-22 02:10:29,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:29,154 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 32, 32, 27, 26, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 10, 10, 9, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:29,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 02:10:29,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 02:10:29,357 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:29,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:29,357 INFO L85 PathProgramCache]: Analyzing trace with hash -70506783, now seen corresponding path program 8 times [2024-11-22 02:10:29,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:29,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054694605] [2024-11-22 02:10:29,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:29,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:29,392 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:29,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6064 backedges. 671 proven. 162 refuted. 0 times theorem prover too weak. 5231 trivial. 0 not checked. [2024-11-22 02:10:29,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:29,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054694605] [2024-11-22 02:10:29,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054694605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:29,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281974994] [2024-11-22 02:10:29,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:29,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:29,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:29,633 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:29,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 02:10:29,824 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:29,824 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:29,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:10:29,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6064 backedges. 653 proven. 649 refuted. 0 times theorem prover too weak. 4762 trivial. 0 not checked. [2024-11-22 02:10:29,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6064 backedges. 653 proven. 679 refuted. 0 times theorem prover too weak. 4732 trivial. 0 not checked. [2024-11-22 02:10:32,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281974994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:32,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:32,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 19] total 29 [2024-11-22 02:10:32,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514987459] [2024-11-22 02:10:32,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:32,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 02:10:32,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 02:10:32,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2024-11-22 02:10:32,139 INFO L87 Difference]: Start difference. First operand 172 states and 272 transitions. Second operand has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 22 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 17 states have call predecessors, (36), 22 states have call successors, (36) [2024-11-22 02:10:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:32,863 INFO L93 Difference]: Finished difference Result 441 states and 906 transitions. [2024-11-22 02:10:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 02:10:32,863 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 22 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 17 states have call predecessors, (36), 22 states have call successors, (36) Word has length 459 [2024-11-22 02:10:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:32,866 INFO L225 Difference]: With dead ends: 441 [2024-11-22 02:10:32,866 INFO L226 Difference]: Without dead ends: 240 [2024-11-22 02:10:32,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 893 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=438, Invalid=2642, Unknown=0, NotChecked=0, Total=3080 [2024-11-22 02:10:32,869 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 92 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:32,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 721 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:10:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-22 02:10:32,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 219. [2024-11-22 02:10:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 150 states have (on average 1.0933333333333333) internal successors, (164), 147 states have internal predecessors, (164), 45 states have call successors, (45), 27 states have call predecessors, (45), 23 states have return successors, (140), 44 states have call predecessors, (140), 45 states have call successors, (140) [2024-11-22 02:10:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 349 transitions. [2024-11-22 02:10:32,883 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 349 transitions. Word has length 459 [2024-11-22 02:10:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:32,884 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 349 transitions. [2024-11-22 02:10:32,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 22 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 17 states have call predecessors, (36), 22 states have call successors, (36) [2024-11-22 02:10:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 349 transitions. [2024-11-22 02:10:32,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-22 02:10:32,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:32,886 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 24, 23, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 10, 8, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:32,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:33,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:33,087 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:33,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:33,087 INFO L85 PathProgramCache]: Analyzing trace with hash -802356795, now seen corresponding path program 9 times [2024-11-22 02:10:33,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:33,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899515196] [2024-11-22 02:10:33,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:33,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:33,105 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 02:10:33,106 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4677 backedges. 641 proven. 90 refuted. 0 times theorem prover too weak. 3946 trivial. 0 not checked. [2024-11-22 02:10:33,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:33,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899515196] [2024-11-22 02:10:33,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899515196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:33,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761407516] [2024-11-22 02:10:33,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:33,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:33,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:33,197 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:33,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 02:10:33,356 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-22 02:10:33,357 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:33,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:10:33,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4677 backedges. 1739 proven. 17 refuted. 0 times theorem prover too weak. 2921 trivial. 0 not checked. [2024-11-22 02:10:33,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4677 backedges. 729 proven. 105 refuted. 0 times theorem prover too weak. 3843 trivial. 0 not checked. [2024-11-22 02:10:34,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761407516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:34,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:34,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2024-11-22 02:10:34,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500245174] [2024-11-22 02:10:34,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:34,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 02:10:34,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:34,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 02:10:34,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-22 02:10:34,274 INFO L87 Difference]: Start difference. First operand 219 states and 349 transitions. Second operand has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 9 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-22 02:10:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:34,468 INFO L93 Difference]: Finished difference Result 423 states and 699 transitions. [2024-11-22 02:10:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:10:34,469 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 9 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) Word has length 405 [2024-11-22 02:10:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:34,471 INFO L225 Difference]: With dead ends: 423 [2024-11-22 02:10:34,471 INFO L226 Difference]: Without dead ends: 214 [2024-11-22 02:10:34,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 797 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:10:34,473 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 48 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:34,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 201 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:34,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-22 02:10:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 198. [2024-11-22 02:10:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 136 states have (on average 1.0955882352941178) internal successors, (149), 134 states have internal predecessors, (149), 40 states have call successors, (40), 25 states have call predecessors, (40), 21 states have return successors, (117), 38 states have call predecessors, (117), 40 states have call successors, (117) [2024-11-22 02:10:34,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 306 transitions. [2024-11-22 02:10:34,486 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 306 transitions. Word has length 405 [2024-11-22 02:10:34,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:34,488 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 306 transitions. [2024-11-22 02:10:34,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 9 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-22 02:10:34,488 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 306 transitions. [2024-11-22 02:10:34,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-11-22 02:10:34,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:34,490 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 34, 34, 28, 26, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 9, 9, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:34,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 02:10:34,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 02:10:34,695 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:34,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:34,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1130998646, now seen corresponding path program 10 times [2024-11-22 02:10:34,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:34,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684551025] [2024-11-22 02:10:34,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:34,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:34,728 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:34,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6415 backedges. 569 proven. 110 refuted. 0 times theorem prover too weak. 5736 trivial. 0 not checked. [2024-11-22 02:10:34,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:34,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684551025] [2024-11-22 02:10:34,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684551025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:34,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144527649] [2024-11-22 02:10:34,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:34,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:34,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:34,885 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:34,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 02:10:35,112 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:35,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:35,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:10:35,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6415 backedges. 450 proven. 896 refuted. 0 times theorem prover too weak. 5069 trivial. 0 not checked. [2024-11-22 02:10:35,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6415 backedges. 452 proven. 924 refuted. 0 times theorem prover too weak. 5039 trivial. 0 not checked. [2024-11-22 02:10:37,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144527649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:37,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:37,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 19] total 28 [2024-11-22 02:10:37,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108491751] [2024-11-22 02:10:37,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:37,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:10:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:37,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:10:37,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:10:37,416 INFO L87 Difference]: Start difference. First operand 198 states and 306 transitions. Second operand has 28 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 28 states have internal predecessors, (92), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) [2024-11-22 02:10:38,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:38,021 INFO L93 Difference]: Finished difference Result 518 states and 958 transitions. [2024-11-22 02:10:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 02:10:38,021 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 28 states have internal predecessors, (92), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) Word has length 472 [2024-11-22 02:10:38,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:38,024 INFO L225 Difference]: With dead ends: 518 [2024-11-22 02:10:38,025 INFO L226 Difference]: Without dead ends: 260 [2024-11-22 02:10:38,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 918 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=2447, Unknown=0, NotChecked=0, Total=2862 [2024-11-22 02:10:38,028 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 79 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:38,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 612 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:10:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-22 02:10:38,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 213. [2024-11-22 02:10:38,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 147 states have (on average 1.0680272108843538) internal successors, (157), 145 states have internal predecessors, (157), 43 states have call successors, (43), 28 states have call predecessors, (43), 22 states have return successors, (88), 39 states have call predecessors, (88), 43 states have call successors, (88) [2024-11-22 02:10:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 288 transitions. [2024-11-22 02:10:38,043 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 288 transitions. Word has length 472 [2024-11-22 02:10:38,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:38,043 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 288 transitions. [2024-11-22 02:10:38,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 28 states have internal predecessors, (92), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) [2024-11-22 02:10:38,043 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 288 transitions. [2024-11-22 02:10:38,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-22 02:10:38,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:38,046 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:38,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-22 02:10:38,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 02:10:38,250 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:38,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1402769443, now seen corresponding path program 11 times [2024-11-22 02:10:38,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:38,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111814361] [2024-11-22 02:10:38,251 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:38,312 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2024-11-22 02:10:38,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-11-22 02:10:43,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111814361] [2024-11-22 02:10:43,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111814361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65782810] [2024-11-22 02:10:43,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:43,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:43,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:43,005 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:43,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 02:10:43,267 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2024-11-22 02:10:43,268 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:43,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 271 conjuncts are in the unsatisfiable core [2024-11-22 02:10:43,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-11-22 02:10:43,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-11-22 02:10:45,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65782810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:45,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:45,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 52 [2024-11-22 02:10:45,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105352446] [2024-11-22 02:10:45,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:45,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-22 02:10:45,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:45,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-22 02:10:45,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2024-11-22 02:10:45,600 INFO L87 Difference]: Start difference. First operand 213 states and 288 transitions. Second operand has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) [2024-11-22 02:10:46,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:46,220 INFO L93 Difference]: Finished difference Result 298 states and 454 transitions. [2024-11-22 02:10:46,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-22 02:10:46,220 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) Word has length 460 [2024-11-22 02:10:46,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:46,223 INFO L225 Difference]: With dead ends: 298 [2024-11-22 02:10:46,223 INFO L226 Difference]: Without dead ends: 291 [2024-11-22 02:10:46,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1005 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=2729, Unknown=0, NotChecked=0, Total=2862 [2024-11-22 02:10:46,224 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:46,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2933 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:10:46,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-22 02:10:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 259. [2024-11-22 02:10:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 175 states have (on average 1.0571428571428572) internal successors, (185), 173 states have internal predecessors, (185), 51 states have call successors, (51), 28 states have call predecessors, (51), 32 states have return successors, (161), 57 states have call predecessors, (161), 51 states have call successors, (161) [2024-11-22 02:10:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 397 transitions. [2024-11-22 02:10:46,244 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 397 transitions. Word has length 460 [2024-11-22 02:10:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:46,245 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 397 transitions. [2024-11-22 02:10:46,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) [2024-11-22 02:10:46,245 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 397 transitions. [2024-11-22 02:10:46,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2024-11-22 02:10:46,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:46,247 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 32, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 11, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:46,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-22 02:10:46,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:46,448 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:46,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:46,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1334390673, now seen corresponding path program 12 times [2024-11-22 02:10:46,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:46,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470470508] [2024-11-22 02:10:46,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:46,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:46,471 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-22 02:10:46,471 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6227 backedges. 580 proven. 2 refuted. 0 times theorem prover too weak. 5645 trivial. 0 not checked. [2024-11-22 02:10:46,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:46,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470470508] [2024-11-22 02:10:46,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470470508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:46,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31658809] [2024-11-22 02:10:46,515 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:46,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:46,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:46,517 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:46,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 02:10:46,703 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-22 02:10:46,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:46,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:10:46,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6227 backedges. 578 proven. 4 refuted. 0 times theorem prover too weak. 5645 trivial. 0 not checked. [2024-11-22 02:10:46,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6227 backedges. 578 proven. 4 refuted. 0 times theorem prover too weak. 5645 trivial. 0 not checked. [2024-11-22 02:10:47,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31658809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:47,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:47,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2024-11-22 02:10:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601157720] [2024-11-22 02:10:47,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:47,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 02:10:47,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:47,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 02:10:47,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:10:47,458 INFO L87 Difference]: Start difference. First operand 259 states and 397 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-22 02:10:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:47,527 INFO L93 Difference]: Finished difference Result 468 states and 743 transitions. [2024-11-22 02:10:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:10:47,528 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 465 [2024-11-22 02:10:47,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:47,530 INFO L225 Difference]: With dead ends: 468 [2024-11-22 02:10:47,531 INFO L226 Difference]: Without dead ends: 233 [2024-11-22 02:10:47,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 924 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:10:47,533 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 15 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:47,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 108 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:10:47,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-22 02:10:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-11-22 02:10:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 160 states have (on average 1.0625) internal successors, (170), 157 states have internal predecessors, (170), 46 states have call successors, (46), 29 states have call predecessors, (46), 26 states have return successors, (111), 46 states have call predecessors, (111), 46 states have call successors, (111) [2024-11-22 02:10:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 327 transitions. [2024-11-22 02:10:47,558 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 327 transitions. Word has length 465 [2024-11-22 02:10:47,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:47,558 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 327 transitions. [2024-11-22 02:10:47,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-22 02:10:47,559 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 327 transitions. [2024-11-22 02:10:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-22 02:10:47,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:47,563 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 27, 24, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 9, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:47,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:47,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:47,767 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:47,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:47,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1746330451, now seen corresponding path program 13 times [2024-11-22 02:10:47,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:47,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281374147] [2024-11-22 02:10:47,767 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:47,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6007 backedges. 396 proven. 404 refuted. 0 times theorem prover too weak. 5207 trivial. 0 not checked. [2024-11-22 02:10:48,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:48,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281374147] [2024-11-22 02:10:48,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281374147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:48,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539455950] [2024-11-22 02:10:48,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:48,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:48,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:48,069 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:48,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 02:10:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:48,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:10:48,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6007 backedges. 396 proven. 404 refuted. 0 times theorem prover too weak. 5207 trivial. 0 not checked. [2024-11-22 02:10:48,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6007 backedges. 396 proven. 414 refuted. 0 times theorem prover too weak. 5197 trivial. 0 not checked. [2024-11-22 02:10:49,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539455950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:49,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:49,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 13] total 15 [2024-11-22 02:10:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545426150] [2024-11-22 02:10:49,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:49,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 02:10:49,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 02:10:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:10:49,380 INFO L87 Difference]: Start difference. First operand 233 states and 327 transitions. Second operand has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 11 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-22 02:10:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:49,497 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2024-11-22 02:10:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:10:49,498 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 11 states have call predecessors, (19), 9 states have call successors, (19) Word has length 457 [2024-11-22 02:10:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:49,500 INFO L225 Difference]: With dead ends: 253 [2024-11-22 02:10:49,500 INFO L226 Difference]: Without dead ends: 244 [2024-11-22 02:10:49,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 906 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-22 02:10:49,501 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:49,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 153 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:49,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-22 02:10:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 233. [2024-11-22 02:10:49,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 160 states have (on average 1.0625) internal successors, (170), 157 states have internal predecessors, (170), 46 states have call successors, (46), 29 states have call predecessors, (46), 26 states have return successors, (111), 46 states have call predecessors, (111), 46 states have call successors, (111) [2024-11-22 02:10:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 327 transitions. [2024-11-22 02:10:49,518 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 327 transitions. Word has length 457 [2024-11-22 02:10:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:49,518 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 327 transitions. [2024-11-22 02:10:49,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (19), 11 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-22 02:10:49,519 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 327 transitions. [2024-11-22 02:10:49,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-22 02:10:49,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:49,521 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 35, 35, 30, 26, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 13, 9, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:49,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-22 02:10:49,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:49,722 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:49,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:49,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1916231198, now seen corresponding path program 14 times [2024-11-22 02:10:49,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:49,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881418809] [2024-11-22 02:10:49,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:49,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:49,753 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:49,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7180 backedges. 295 proven. 1023 refuted. 0 times theorem prover too weak. 5862 trivial. 0 not checked. [2024-11-22 02:10:50,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:50,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881418809] [2024-11-22 02:10:50,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881418809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:50,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766623293] [2024-11-22 02:10:50,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:50,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:50,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:50,083 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:50,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-22 02:10:50,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:50,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:50,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:10:50,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:50,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7180 backedges. 291 proven. 1296 refuted. 0 times theorem prover too weak. 5593 trivial. 0 not checked. [2024-11-22 02:10:50,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7180 backedges. 291 proven. 1336 refuted. 0 times theorem prover too weak. 5553 trivial. 0 not checked. [2024-11-22 02:10:52,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766623293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:52,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:52,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 21] total 27 [2024-11-22 02:10:52,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346391329] [2024-11-22 02:10:52,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:52,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 02:10:52,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:52,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 02:10:52,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:10:52,953 INFO L87 Difference]: Start difference. First operand 233 states and 327 transitions. Second operand has 27 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 27 states have internal predecessors, (87), 21 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 13 states have call predecessors, (33), 21 states have call successors, (33) [2024-11-22 02:10:53,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:53,148 INFO L93 Difference]: Finished difference Result 248 states and 346 transitions. [2024-11-22 02:10:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:10:53,148 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 27 states have internal predecessors, (87), 21 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 13 states have call predecessors, (33), 21 states have call successors, (33) Word has length 498 [2024-11-22 02:10:53,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:53,150 INFO L225 Difference]: With dead ends: 248 [2024-11-22 02:10:53,150 INFO L226 Difference]: Without dead ends: 183 [2024-11-22 02:10:53,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 978 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 02:10:53,151 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 15 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:53,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 470 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:53,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-22 02:10:53,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2024-11-22 02:10:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 128 states have (on average 1.078125) internal successors, (138), 125 states have internal predecessors, (138), 34 states have call successors, (34), 26 states have call predecessors, (34), 19 states have return successors, (42), 30 states have call predecessors, (42), 34 states have call successors, (42) [2024-11-22 02:10:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 214 transitions. [2024-11-22 02:10:53,167 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 214 transitions. Word has length 498 [2024-11-22 02:10:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:53,167 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 214 transitions. [2024-11-22 02:10:53,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 27 states have internal predecessors, (87), 21 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 13 states have call predecessors, (33), 21 states have call successors, (33) [2024-11-22 02:10:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 214 transitions. [2024-11-22 02:10:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-22 02:10:53,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:53,169 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 27, 26, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 9, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:53,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-22 02:10:53,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-22 02:10:53,370 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:53,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:53,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1246587483, now seen corresponding path program 15 times [2024-11-22 02:10:53,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:53,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756575149] [2024-11-22 02:10:53,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:53,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:53,387 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-22 02:10:53,390 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6056 backedges. 561 proven. 75 refuted. 0 times theorem prover too weak. 5420 trivial. 0 not checked. [2024-11-22 02:10:53,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:53,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756575149] [2024-11-22 02:10:53,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756575149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:53,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246262084] [2024-11-22 02:10:53,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:53,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:53,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:53,452 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:53,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-22 02:10:53,639 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-22 02:10:53,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:53,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:10:53,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6056 backedges. 2026 proven. 6 refuted. 0 times theorem prover too weak. 4024 trivial. 0 not checked. [2024-11-22 02:10:53,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6056 backedges. 664 proven. 93 refuted. 0 times theorem prover too weak. 5299 trivial. 0 not checked. [2024-11-22 02:10:54,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246262084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:54,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:54,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-22 02:10:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911718882] [2024-11-22 02:10:54,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:54,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 02:10:54,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:54,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 02:10:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:10:54,499 INFO L87 Difference]: Start difference. First operand 182 states and 214 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-22 02:10:54,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:54,591 INFO L93 Difference]: Finished difference Result 236 states and 275 transitions. [2024-11-22 02:10:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:10:54,592 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) Word has length 459 [2024-11-22 02:10:54,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:54,593 INFO L225 Difference]: With dead ends: 236 [2024-11-22 02:10:54,593 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 02:10:54,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 908 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:10:54,596 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:54,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 156 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:54,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 02:10:54,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 02:10:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 02:10:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 02:10:54,597 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 459 [2024-11-22 02:10:54,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:54,597 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 02:10:54,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-22 02:10:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 02:10:54,597 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 02:10:54,600 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 02:10:54,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-22 02:10:54,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-22 02:10:54,803 INFO L407 BasicCegarLoop]: Path program histogram: [15, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:54,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 02:11:08,260 WARN L286 SmtUtils]: Spent 8.77s on a formula simplification. DAG size of input: 116 DAG size of output: 137 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-22 02:11:25,370 WARN L286 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 140 DAG size of output: 53 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)