./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-3061b6d-m [2024-11-18 14:25:09,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:25:09,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:25:09,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:25:09,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:25:09,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:25:09,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:25:09,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:25:09,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:25:09,834 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:25:09,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:25:09,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:25:09,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:25:09,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:25:09,840 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:25:09,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:25:09,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:25:09,841 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:25:09,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:25:09,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:25:09,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:25:09,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:25:09,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:25:09,844 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:25:09,845 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:25:09,845 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:25:09,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:25:09,846 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:25:09,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:25:09,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:25:09,846 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:25:09,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:25:09,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:25:09,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:25:09,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:25:09,848 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:25:09,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:25:09,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:25:09,849 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:25:09,849 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:25:09,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:25:09,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:25:09,850 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 [2024-11-18 14:25:10,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:25:10,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:25:10,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:25:10,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:25:10,131 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:25:10,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-11-18 14:25:11,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:25:11,722 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:25:11,722 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-11-18 14:25:11,730 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785d00a6e/e3b4b5038829479a9f98bb630a26054f/FLAG5b2337726 [2024-11-18 14:25:11,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785d00a6e/e3b4b5038829479a9f98bb630a26054f [2024-11-18 14:25:11,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:25:11,746 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:25:11,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:25:11,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:25:11,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:25:11,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:25:11" (1/1) ... [2024-11-18 14:25:11,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412aa388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:11, skipping insertion in model container [2024-11-18 14:25:11,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:25:11" (1/1) ... [2024-11-18 14:25:11,773 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:25:11,969 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] [2024-11-18 14:25:11,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:25:11,985 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:25:11,998 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] [2024-11-18 14:25:11,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:25:12,015 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:25:12,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12 WrapperNode [2024-11-18 14:25:12,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:25:12,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:25:12,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:25:12,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:25:12,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,049 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-18 14:25:12,050 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:25:12,051 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:25:12,051 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:25:12,051 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:25:12,063 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,065 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,075 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 14:25:12,075 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:25:12,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:25:12,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:25:12,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:25:12,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (1/1) ... [2024-11-18 14:25:12,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:25:12,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:12,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:25:12,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:25:12,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:25:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:25:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-18 14:25:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-18 14:25:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-18 14:25:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-18 14:25:12,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:25:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:25:12,251 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:25:12,254 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:25:12,397 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-18 14:25:12,401 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:25:12,414 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:25:12,415 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 14:25:12,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:25:12 BoogieIcfgContainer [2024-11-18 14:25:12,416 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:25:12,418 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:25:12,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:25:12,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:25:12,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:25:11" (1/3) ... [2024-11-18 14:25:12,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2764def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:25:12, skipping insertion in model container [2024-11-18 14:25:12,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:12" (2/3) ... [2024-11-18 14:25:12,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2764def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:25:12, skipping insertion in model container [2024-11-18 14:25:12,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:25:12" (3/3) ... [2024-11-18 14:25:12,426 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2024-11-18 14:25:12,445 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:25:12,446 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:25:12,503 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:25:12,509 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;@a113574, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:25:12,509 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:25:12,512 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) [2024-11-18 14:25:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 14:25:12,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:12,519 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:12,519 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:12,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2024-11-18 14:25:12,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:12,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235631958] [2024-11-18 14:25:12,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:12,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:25:12,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:12,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235631958] [2024-11-18 14:25:12,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235631958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:25:12,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:25:12,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:25:12,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582130563] [2024-11-18 14:25:12,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:25:12,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:25:12,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:12,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:25:12,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:12,816 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) [2024-11-18 14:25:12,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:12,905 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-11-18 14:25:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:25:12,910 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 [2024-11-18 14:25:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:12,917 INFO L225 Difference]: With dead ends: 41 [2024-11-18 14:25:12,917 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 14:25:12,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:12,922 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 [2024-11-18 14:25:12,923 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] [2024-11-18 14:25:12,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 14:25:12,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-18 14:25:12,957 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) [2024-11-18 14:25:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-18 14:25:12,960 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2024-11-18 14:25:12,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:12,961 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-18 14:25:12,961 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) [2024-11-18 14:25:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-18 14:25:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 14:25:12,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:12,964 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:12,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:25:12,965 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:12,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:12,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2024-11-18 14:25:12,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:12,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5962203] [2024-11-18 14:25:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:12,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:25:13,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:13,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5962203] [2024-11-18 14:25:13,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5962203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:25:13,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:25:13,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:25:13,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534287766] [2024-11-18 14:25:13,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:25:13,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:25:13,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:13,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:25:13,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:13,101 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) [2024-11-18 14:25:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:13,167 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-18 14:25:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:25:13,168 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 [2024-11-18 14:25:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:13,169 INFO L225 Difference]: With dead ends: 33 [2024-11-18 14:25:13,170 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 14:25:13,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:13,172 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:13,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 14:25:13,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-18 14:25:13,184 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) [2024-11-18 14:25:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-18 14:25:13,186 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2024-11-18 14:25:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:13,187 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-18 14:25:13,187 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) [2024-11-18 14:25:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-18 14:25:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 14:25:13,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:13,188 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] [2024-11-18 14:25:13,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:25:13,188 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:13,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:13,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2024-11-18 14:25:13,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:13,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519038659] [2024-11-18 14:25:13,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:13,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:13,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:13,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519038659] [2024-11-18 14:25:13,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519038659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:13,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713250796] [2024-11-18 14:25:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:13,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:13,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:13,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:13,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:25:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:13,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:25:13,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:13,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:13,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713250796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:13,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:13,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-18 14:25:13,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252551274] [2024-11-18 14:25:13,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:13,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 14:25:13,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:13,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 14:25:13,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:25:13,799 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) [2024-11-18 14:25:13,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:13,971 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2024-11-18 14:25:13,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:25:13,972 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 [2024-11-18 14:25:13,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:13,973 INFO L225 Difference]: With dead ends: 55 [2024-11-18 14:25:13,973 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 14:25:13,974 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 [2024-11-18 14:25:13,975 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 [2024-11-18 14:25:13,976 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] [2024-11-18 14:25:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 14:25:13,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-18 14:25:13,985 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) [2024-11-18 14:25:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-18 14:25:13,986 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2024-11-18 14:25:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:13,987 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-18 14:25:13,987 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) [2024-11-18 14:25:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-18 14:25:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 14:25:13,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:13,989 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] [2024-11-18 14:25:14,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:25:14,191 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 [2024-11-18 14:25:14,191 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:14,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2024-11-18 14:25:14,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:14,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896044518] [2024-11-18 14:25:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:14,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:14,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:14,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896044518] [2024-11-18 14:25:14,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896044518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:14,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968632686] [2024-11-18 14:25:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:14,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:14,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:14,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:14,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:25:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:14,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:25:14,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:14,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:14,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968632686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:14,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:14,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-18 14:25:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939234864] [2024-11-18 14:25:14,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:14,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:25:14,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:14,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:25:14,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:25:14,641 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) [2024-11-18 14:25:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:14,775 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-18 14:25:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:25:14,776 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 [2024-11-18 14:25:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:14,778 INFO L225 Difference]: With dead ends: 40 [2024-11-18 14:25:14,779 INFO L226 Difference]: Without dead ends: 36 [2024-11-18 14:25:14,779 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 [2024-11-18 14:25:14,780 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 [2024-11-18 14:25:14,782 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] [2024-11-18 14:25:14,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-18 14:25:14,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-18 14:25:14,796 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) [2024-11-18 14:25:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-18 14:25:14,799 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2024-11-18 14:25:14,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:14,800 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-18 14:25:14,800 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) [2024-11-18 14:25:14,800 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-18 14:25:14,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 14:25:14,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:14,803 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] [2024-11-18 14:25:14,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:25:15,003 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 [2024-11-18 14:25:15,004 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:15,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2024-11-18 14:25:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:15,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727787605] [2024-11-18 14:25:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:15,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:25:15,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:15,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727787605] [2024-11-18 14:25:15,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727787605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:15,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865472888] [2024-11-18 14:25:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:15,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:15,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:15,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:15,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:25:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:15,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:25:15,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:25:15,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:25:15,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865472888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:15,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:15,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2024-11-18 14:25:15,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186953331] [2024-11-18 14:25:15,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:15,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 14:25:15,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:15,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 14:25:15,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:25:15,629 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) [2024-11-18 14:25:15,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:15,805 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2024-11-18 14:25:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:25:15,805 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 [2024-11-18 14:25:15,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:15,807 INFO L225 Difference]: With dead ends: 69 [2024-11-18 14:25:15,807 INFO L226 Difference]: Without dead ends: 38 [2024-11-18 14:25:15,808 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 [2024-11-18 14:25:15,809 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 [2024-11-18 14:25:15,809 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] [2024-11-18 14:25:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-18 14:25:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-18 14:25:15,815 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) [2024-11-18 14:25:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-18 14:25:15,817 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2024-11-18 14:25:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:15,817 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-18 14:25:15,817 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) [2024-11-18 14:25:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-18 14:25:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 14:25:15,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:15,819 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] [2024-11-18 14:25:15,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:16,023 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 [2024-11-18 14:25:16,024 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:16,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:16,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2024-11-18 14:25:16,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:16,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928907848] [2024-11-18 14:25:16,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:16,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:25:16,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:16,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928907848] [2024-11-18 14:25:16,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928907848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:16,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924035124] [2024-11-18 14:25:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:16,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:16,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:16,154 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) [2024-11-18 14:25:16,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:25:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:16,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:25:16,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:25:16,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:25:16,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924035124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:16,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:16,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2024-11-18 14:25:16,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488112088] [2024-11-18 14:25:16,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:16,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:25:16,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:16,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:25:16,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:25:16,649 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) [2024-11-18 14:25:17,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:17,060 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2024-11-18 14:25:17,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 14:25:17,061 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 [2024-11-18 14:25:17,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:17,063 INFO L225 Difference]: With dead ends: 101 [2024-11-18 14:25:17,063 INFO L226 Difference]: Without dead ends: 68 [2024-11-18 14:25:17,064 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 [2024-11-18 14:25:17,065 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:17,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 303 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:25:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-18 14:25:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-18 14:25:17,076 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) [2024-11-18 14:25:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2024-11-18 14:25:17,081 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2024-11-18 14:25:17,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:17,082 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2024-11-18 14:25:17,082 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) [2024-11-18 14:25:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2024-11-18 14:25:17,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 14:25:17,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:17,086 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] [2024-11-18 14:25:17,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:17,286 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 [2024-11-18 14:25:17,286 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:17,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:17,287 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2024-11-18 14:25:17,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:17,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985864534] [2024-11-18 14:25:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:17,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 14:25:17,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:17,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985864534] [2024-11-18 14:25:17,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985864534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512937251] [2024-11-18 14:25:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:17,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:17,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:17,441 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) [2024-11-18 14:25:17,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:25:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:17,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:25:17,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:25:17,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:25:18,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512937251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:18,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:18,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2024-11-18 14:25:18,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311647701] [2024-11-18 14:25:18,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:18,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:25:18,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:18,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:25:18,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:25:18,038 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) [2024-11-18 14:25:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:18,247 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2024-11-18 14:25:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:25:18,248 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 [2024-11-18 14:25:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:18,250 INFO L225 Difference]: With dead ends: 102 [2024-11-18 14:25:18,250 INFO L226 Difference]: Without dead ends: 98 [2024-11-18 14:25:18,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:25:18,256 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 [2024-11-18 14:25:18,256 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] [2024-11-18 14:25:18,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-18 14:25:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2024-11-18 14:25:18,283 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) [2024-11-18 14:25:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2024-11-18 14:25:18,286 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2024-11-18 14:25:18,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:18,287 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2024-11-18 14:25:18,287 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) [2024-11-18 14:25:18,287 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2024-11-18 14:25:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 14:25:18,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:18,292 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] [2024-11-18 14:25:18,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:25:18,496 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 [2024-11-18 14:25:18,497 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:18,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2024-11-18 14:25:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:18,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927439438] [2024-11-18 14:25:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:18,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-18 14:25:18,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:18,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927439438] [2024-11-18 14:25:18,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927439438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:18,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711006831] [2024-11-18 14:25:18,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:18,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:18,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:18,667 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) [2024-11-18 14:25:18,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:25:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:18,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:25:18,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-18 14:25:18,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 102 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 14:25:19,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711006831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:19,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:19,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-11-18 14:25:19,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372856547] [2024-11-18 14:25:19,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:19,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:25:19,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:25:19,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:25:19,763 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) [2024-11-18 14:25:20,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:20,342 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2024-11-18 14:25:20,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-18 14:25:20,343 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 [2024-11-18 14:25:20,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:20,346 INFO L225 Difference]: With dead ends: 177 [2024-11-18 14:25:20,346 INFO L226 Difference]: Without dead ends: 104 [2024-11-18 14:25:20,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 14:25:20,349 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 96 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2024-11-18 14:25:20,349 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] [2024-11-18 14:25:20,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-18 14:25:20,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2024-11-18 14:25:20,368 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) [2024-11-18 14:25:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2024-11-18 14:25:20,373 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 93 [2024-11-18 14:25:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:20,373 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2024-11-18 14:25:20,373 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) [2024-11-18 14:25:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2024-11-18 14:25:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 14:25:20,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:20,376 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] [2024-11-18 14:25:20,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:25:20,578 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 [2024-11-18 14:25:20,579 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:20,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:20,579 INFO L85 PathProgramCache]: Analyzing trace with hash 437944761, now seen corresponding path program 2 times [2024-11-18 14:25:20,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:20,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313027451] [2024-11-18 14:25:20,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:20,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:20,605 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:20,605 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:20,817 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 43 proven. 179 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2024-11-18 14:25:20,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:20,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313027451] [2024-11-18 14:25:20,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313027451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:20,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398389050] [2024-11-18 14:25:20,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:20,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:20,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:20,820 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) [2024-11-18 14:25:20,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:25:20,908 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:20,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:20,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:25:20,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 244 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-11-18 14:25:21,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-18 14:25:22,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398389050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:22,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:22,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 23 [2024-11-18 14:25:22,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900632430] [2024-11-18 14:25:22,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:22,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:25:22,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:25:22,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:25:22,324 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) [2024-11-18 14:25:22,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:22,616 INFO L93 Difference]: Finished difference Result 132 states and 227 transitions. [2024-11-18 14:25:22,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 14:25:22,617 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 [2024-11-18 14:25:22,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:22,619 INFO L225 Difference]: With dead ends: 132 [2024-11-18 14:25:22,619 INFO L226 Difference]: Without dead ends: 128 [2024-11-18 14:25:22,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 302 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2024-11-18 14:25:22,621 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:22,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 196 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:25:22,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-18 14:25:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2024-11-18 14:25:22,639 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) [2024-11-18 14:25:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 194 transitions. [2024-11-18 14:25:22,641 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 194 transitions. Word has length 159 [2024-11-18 14:25:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:22,641 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 194 transitions. [2024-11-18 14:25:22,642 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) [2024-11-18 14:25:22,642 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 194 transitions. [2024-11-18 14:25:22,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-18 14:25:22,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:22,646 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] [2024-11-18 14:25:22,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 14:25:22,849 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 [2024-11-18 14:25:22,850 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:22,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:22,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1279109938, now seen corresponding path program 2 times [2024-11-18 14:25:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349093597] [2024-11-18 14:25:22,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:22,915 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:22,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 158 proven. 490 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-18 14:25:23,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:23,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349093597] [2024-11-18 14:25:23,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349093597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:23,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521563651] [2024-11-18 14:25:23,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:23,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:23,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:23,358 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) [2024-11-18 14:25:23,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:25:23,495 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:23,495 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:23,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 14:25:23,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 569 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2024-11-18 14:25:23,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 593 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-11-18 14:25:25,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521563651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:25,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:25,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 28 [2024-11-18 14:25:25,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569042482] [2024-11-18 14:25:25,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:25,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 14:25:25,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:25,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 14:25:25,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:25:25,626 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) [2024-11-18 14:25:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:26,424 INFO L93 Difference]: Finished difference Result 323 states and 666 transitions. [2024-11-18 14:25:26,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 14:25:26,425 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 [2024-11-18 14:25:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:26,428 INFO L225 Difference]: With dead ends: 323 [2024-11-18 14:25:26,428 INFO L226 Difference]: Without dead ends: 214 [2024-11-18 14:25:26,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 547 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=446, Invalid=2310, Unknown=0, NotChecked=0, Total=2756 [2024-11-18 14:25:26,431 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 139 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:26,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 460 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:25:26,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-18 14:25:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 184. [2024-11-18 14:25:26,455 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) [2024-11-18 14:25:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2024-11-18 14:25:26,457 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 284 [2024-11-18 14:25:26,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:26,458 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2024-11-18 14:25:26,458 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) [2024-11-18 14:25:26,458 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2024-11-18 14:25:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-18 14:25:26,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:26,466 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 29, 29, 29, 22, 19, 19, 19, 19, 19, 19, 19, 15, 14, 14, 14, 14, 14, 14, 14, 9, 7, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:26,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 14:25:26,669 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 [2024-11-18 14:25:26,670 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:26,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash 73048603, now seen corresponding path program 3 times [2024-11-18 14:25:26,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:26,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019705718] [2024-11-18 14:25:26,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:25:26,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:26,698 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 14:25:26,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 565 proven. 43 refuted. 0 times theorem prover too weak. 5513 trivial. 0 not checked. [2024-11-18 14:25:26,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:26,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019705718] [2024-11-18 14:25:26,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019705718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:26,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977231774] [2024-11-18 14:25:26,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:25:26,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:26,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:26,831 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) [2024-11-18 14:25:26,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:25:26,976 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 14:25:26,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:26,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:25:26,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:27,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 1469 proven. 6 refuted. 0 times theorem prover too weak. 4646 trivial. 0 not checked. [2024-11-18 14:25:27,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 689 proven. 54 refuted. 0 times theorem prover too weak. 5378 trivial. 0 not checked. [2024-11-18 14:25:28,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977231774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:28,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:28,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-18 14:25:28,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596989612] [2024-11-18 14:25:28,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:28,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 14:25:28,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:28,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 14:25:28,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:25:28,268 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 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) [2024-11-18 14:25:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:28,382 INFO L93 Difference]: Finished difference Result 360 states and 621 transitions. [2024-11-18 14:25:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:25:28,382 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 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 457 [2024-11-18 14:25:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:28,385 INFO L225 Difference]: With dead ends: 360 [2024-11-18 14:25:28,385 INFO L226 Difference]: Without dead ends: 181 [2024-11-18 14:25:28,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 926 GetRequests, 904 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:25:28,387 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:28,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 133 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:28,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-18 14:25:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2024-11-18 14:25:28,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 116 states have internal predecessors, (138), 33 states have call successors, (33), 18 states have call predecessors, (33), 22 states have return successors, (95), 39 states have call predecessors, (95), 33 states have call successors, (95) [2024-11-18 14:25:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 266 transitions. [2024-11-18 14:25:28,414 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 266 transitions. Word has length 457 [2024-11-18 14:25:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:28,414 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 266 transitions. [2024-11-18 14:25:28,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 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) [2024-11-18 14:25:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 266 transitions. [2024-11-18 14:25:28,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-18 14:25:28,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:28,422 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 29, 29, 28, 27, 19, 19, 19, 19, 19, 19, 19, 14, 14, 14, 14, 14, 14, 14, 14, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:28,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:25:28,622 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 [2024-11-18 14:25:28,623 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:28,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1299493047, now seen corresponding path program 4 times [2024-11-18 14:25:28,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:28,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777810601] [2024-11-18 14:25:28,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:25:28,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:28,667 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:25:28,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 171 proven. 837 refuted. 0 times theorem prover too weak. 5205 trivial. 0 not checked. [2024-11-18 14:25:29,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:29,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777810601] [2024-11-18 14:25:29,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777810601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:29,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957067488] [2024-11-18 14:25:29,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:25:29,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:29,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:29,026 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) [2024-11-18 14:25:29,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:25:29,216 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:25:29,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:29,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:25:29,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 171 proven. 837 refuted. 0 times theorem prover too weak. 5205 trivial. 0 not checked. [2024-11-18 14:25:29,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 171 proven. 853 refuted. 0 times theorem prover too weak. 5189 trivial. 0 not checked. [2024-11-18 14:25:31,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957067488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:31,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:31,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 15] total 17 [2024-11-18 14:25:31,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122901147] [2024-11-18 14:25:31,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:31,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:25:31,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:31,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:25:31,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:25:31,077 INFO L87 Difference]: Start difference. First operand 174 states and 266 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-18 14:25:31,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:31,290 INFO L93 Difference]: Finished difference Result 201 states and 325 transitions. [2024-11-18 14:25:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:25:31,291 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) Word has length 461 [2024-11-18 14:25:31,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:31,295 INFO L225 Difference]: With dead ends: 201 [2024-11-18 14:25:31,295 INFO L226 Difference]: Without dead ends: 197 [2024-11-18 14:25:31,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 913 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:25:31,296 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:31,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 168 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:31,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-18 14:25:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 184. [2024-11-18 14:25:31,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 124 states have (on average 1.1612903225806452) internal successors, (144), 122 states have internal predecessors, (144), 35 states have call successors, (35), 18 states have call predecessors, (35), 24 states have return successors, (114), 43 states have call predecessors, (114), 35 states have call successors, (114) [2024-11-18 14:25:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 293 transitions. [2024-11-18 14:25:31,333 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 293 transitions. Word has length 461 [2024-11-18 14:25:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:31,335 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 293 transitions. [2024-11-18 14:25:31,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-18 14:25:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 293 transitions. [2024-11-18 14:25:31,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-18 14:25:31,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:31,338 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 33, 33, 31, 30, 21, 21, 21, 21, 21, 21, 21, 16, 16, 16, 16, 16, 16, 16, 14, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:31,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 14:25:31,539 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 [2024-11-18 14:25:31,539 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:31,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:31,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1388837487, now seen corresponding path program 5 times [2024-11-18 14:25:31,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:31,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743410108] [2024-11-18 14:25:31,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:31,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:31,588 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 14:25:31,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7776 backedges. 456 proven. 647 refuted. 0 times theorem prover too weak. 6673 trivial. 0 not checked. [2024-11-18 14:25:31,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:31,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743410108] [2024-11-18 14:25:31,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743410108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:31,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704476484] [2024-11-18 14:25:31,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:31,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:31,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:31,754 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) [2024-11-18 14:25:31,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:25:31,930 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 14:25:31,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:31,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:25:31,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7776 backedges. 3938 proven. 19 refuted. 0 times theorem prover too weak. 3819 trivial. 0 not checked. [2024-11-18 14:25:32,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7776 backedges. 493 proven. 750 refuted. 0 times theorem prover too weak. 6533 trivial. 0 not checked. [2024-11-18 14:25:33,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704476484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:33,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:33,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 17 [2024-11-18 14:25:33,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484420423] [2024-11-18 14:25:33,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:33,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:25:33,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:33,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:25:33,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:25:33,516 INFO L87 Difference]: Start difference. First operand 184 states and 293 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, (24), 6 states have call predecessors, (24), 10 states have call successors, (24) [2024-11-18 14:25:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:33,652 INFO L93 Difference]: Finished difference Result 337 states and 564 transitions. [2024-11-18 14:25:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:25:33,652 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, (24), 6 states have call predecessors, (24), 10 states have call successors, (24) Word has length 515 [2024-11-18 14:25:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:33,655 INFO L225 Difference]: With dead ends: 337 [2024-11-18 14:25:33,655 INFO L226 Difference]: Without dead ends: 139 [2024-11-18 14:25:33,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 1019 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:25:33,659 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:33,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 174 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:33,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-18 14:25:33,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-18 14:25:33,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 95 states have internal predecessors, (112), 24 states have call successors, (24), 16 states have call predecessors, (24), 18 states have return successors, (67), 27 states have call predecessors, (67), 24 states have call successors, (67) [2024-11-18 14:25:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 203 transitions. [2024-11-18 14:25:33,688 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 203 transitions. Word has length 515 [2024-11-18 14:25:33,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:33,691 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 203 transitions. [2024-11-18 14:25:33,691 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, (24), 6 states have call predecessors, (24), 10 states have call successors, (24) [2024-11-18 14:25:33,691 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 203 transitions. [2024-11-18 14:25:33,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-18 14:25:33,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:33,694 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 23, 23, 22, 20, 14, 14, 14, 14, 14, 14, 14, 11, 11, 11, 11, 11, 11, 11, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:33,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:33,897 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 [2024-11-18 14:25:33,898 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:33,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:33,898 INFO L85 PathProgramCache]: Analyzing trace with hash -192413695, now seen corresponding path program 6 times [2024-11-18 14:25:33,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:33,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550852770] [2024-11-18 14:25:33,898 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:33,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:33,947 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 14:25:33,947 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 434 proven. 46 refuted. 0 times theorem prover too weak. 3049 trivial. 0 not checked. [2024-11-18 14:25:34,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:34,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550852770] [2024-11-18 14:25:34,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550852770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:34,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182312923] [2024-11-18 14:25:34,046 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:34,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:34,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:34,048 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) [2024-11-18 14:25:34,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:25:34,211 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 14:25:34,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:34,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:25:34,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 1097 proven. 7 refuted. 0 times theorem prover too weak. 2425 trivial. 0 not checked. [2024-11-18 14:25:34,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 519 proven. 57 refuted. 0 times theorem prover too weak. 2953 trivial. 0 not checked. [2024-11-18 14:25:35,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182312923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:35,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:35,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2024-11-18 14:25:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069518497] [2024-11-18 14:25:35,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:35,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 14:25:35,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 14:25:35,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:25:35,133 INFO L87 Difference]: Start difference. First operand 139 states and 203 transitions. Second operand has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 8 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-18 14:25:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:35,340 INFO L93 Difference]: Finished difference Result 267 states and 431 transitions. [2024-11-18 14:25:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 14:25:35,340 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 8 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) Word has length 352 [2024-11-18 14:25:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:35,342 INFO L225 Difference]: With dead ends: 267 [2024-11-18 14:25:35,343 INFO L226 Difference]: Without dead ends: 134 [2024-11-18 14:25:35,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 694 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:25:35,346 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:35,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 155 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-18 14:25:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 129. [2024-11-18 14:25:35,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 88 states have internal predecessors, (104), 22 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (61), 24 states have call predecessors, (61), 22 states have call successors, (61) [2024-11-18 14:25:35,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 187 transitions. [2024-11-18 14:25:35,360 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 187 transitions. Word has length 352 [2024-11-18 14:25:35,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:35,360 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 187 transitions. [2024-11-18 14:25:35,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 8 states have call successors, (17), 2 states have call predecessors, (17), 7 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-18 14:25:35,360 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 187 transitions. [2024-11-18 14:25:35,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-18 14:25:35,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:35,363 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, 10, 10, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:35,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:25:35,566 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 [2024-11-18 14:25:35,567 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:35,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:35,567 INFO L85 PathProgramCache]: Analyzing trace with hash -950356341, now seen corresponding path program 7 times [2024-11-18 14:25:35,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:35,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383237056] [2024-11-18 14:25:35,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:25:35,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6056 backedges. 212 proven. 782 refuted. 0 times theorem prover too weak. 5062 trivial. 0 not checked. [2024-11-18 14:25:36,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:36,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383237056] [2024-11-18 14:25:36,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383237056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:36,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616730843] [2024-11-18 14:25:36,080 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:25:36,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:36,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:36,081 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) [2024-11-18 14:25:36,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:25:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:36,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:25:36,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6056 backedges. 212 proven. 782 refuted. 0 times theorem prover too weak. 5062 trivial. 0 not checked. [2024-11-18 14:25:36,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6056 backedges. 212 proven. 798 refuted. 0 times theorem prover too weak. 5046 trivial. 0 not checked. [2024-11-18 14:25:38,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616730843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:38,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:38,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 15] total 17 [2024-11-18 14:25:38,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791253399] [2024-11-18 14:25:38,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:38,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:25:38,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:38,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:25:38,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:25:38,063 INFO L87 Difference]: Start difference. First operand 129 states and 187 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-18 14:25:38,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:38,237 INFO L93 Difference]: Finished difference Result 156 states and 244 transitions. [2024-11-18 14:25:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:25:38,238 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) Word has length 459 [2024-11-18 14:25:38,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:38,243 INFO L225 Difference]: With dead ends: 156 [2024-11-18 14:25:38,243 INFO L226 Difference]: Without dead ends: 152 [2024-11-18 14:25:38,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 909 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:25:38,245 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:38,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 169 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-18 14:25:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2024-11-18 14:25:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 99 states have (on average 1.1414141414141414) internal successors, (113), 97 states have internal predecessors, (113), 25 states have call successors, (25), 16 states have call predecessors, (25), 19 states have return successors, (85), 30 states have call predecessors, (85), 25 states have call successors, (85) [2024-11-18 14:25:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 223 transitions. [2024-11-18 14:25:38,261 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 223 transitions. Word has length 459 [2024-11-18 14:25:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:38,262 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 223 transitions. [2024-11-18 14:25:38,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-18 14:25:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 223 transitions. [2024-11-18 14:25:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-18 14:25:38,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:38,265 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 31, 30, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 12, 12, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:38,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:38,469 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 [2024-11-18 14:25:38,470 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:38,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:38,470 INFO L85 PathProgramCache]: Analyzing trace with hash 849245375, now seen corresponding path program 8 times [2024-11-18 14:25:38,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:38,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611895120] [2024-11-18 14:25:38,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:38,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:38,532 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:38,532 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 259 proven. 681 refuted. 0 times theorem prover too weak. 6732 trivial. 0 not checked. [2024-11-18 14:25:39,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:39,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611895120] [2024-11-18 14:25:39,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611895120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:39,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972663498] [2024-11-18 14:25:39,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:39,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:39,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:39,089 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) [2024-11-18 14:25:39,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:25:39,353 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:39,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:39,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:25:39,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 286 proven. 844 refuted. 0 times theorem prover too weak. 6542 trivial. 0 not checked. [2024-11-18 14:25:39,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 288 proven. 858 refuted. 0 times theorem prover too weak. 6526 trivial. 0 not checked. [2024-11-18 14:25:41,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972663498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:41,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:41,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 18 [2024-11-18 14:25:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910093417] [2024-11-18 14:25:41,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:41,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:25:41,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:25:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:25:41,128 INFO L87 Difference]: Start difference. First operand 144 states and 223 transitions. Second operand has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-18 14:25:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:41,252 INFO L93 Difference]: Finished difference Result 182 states and 326 transitions. [2024-11-18 14:25:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:25:41,253 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) Word has length 515 [2024-11-18 14:25:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:41,255 INFO L225 Difference]: With dead ends: 182 [2024-11-18 14:25:41,255 INFO L226 Difference]: Without dead ends: 178 [2024-11-18 14:25:41,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 1018 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:25:41,257 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:41,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 172 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-18 14:25:41,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 149. [2024-11-18 14:25:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 100 states have internal predecessors, (116), 26 states have call successors, (26), 16 states have call predecessors, (26), 20 states have return successors, (96), 32 states have call predecessors, (96), 26 states have call successors, (96) [2024-11-18 14:25:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 238 transitions. [2024-11-18 14:25:41,298 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 238 transitions. Word has length 515 [2024-11-18 14:25:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:41,299 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 238 transitions. [2024-11-18 14:25:41,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-18 14:25:41,300 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 238 transitions. [2024-11-18 14:25:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-18 14:25:41,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:41,304 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] [2024-11-18 14:25:41,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:41,508 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 [2024-11-18 14:25:41,509 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:41,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:41,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1027452653, now seen corresponding path program 9 times [2024-11-18 14:25:41,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:41,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688085146] [2024-11-18 14:25:41,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:25:41,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:41,553 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 14:25:41,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 865 proven. 150 refuted. 0 times theorem prover too weak. 5067 trivial. 0 not checked. [2024-11-18 14:25:41,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688085146] [2024-11-18 14:25:41,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688085146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222764687] [2024-11-18 14:25:41,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:25:41,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:41,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:41,783 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) [2024-11-18 14:25:41,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:25:41,985 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 14:25:41,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:41,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:25:41,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 2436 proven. 34 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 14:25:42,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 967 proven. 183 refuted. 0 times theorem prover too weak. 4932 trivial. 0 not checked. [2024-11-18 14:25:43,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222764687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:43,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:43,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 21 [2024-11-18 14:25:43,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135989707] [2024-11-18 14:25:43,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:43,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 14:25:43,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:43,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 14:25:43,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-18 14:25:43,438 INFO L87 Difference]: Start difference. First operand 149 states and 238 transitions. Second operand has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 12 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (30), 10 states have call predecessors, (30), 12 states have call successors, (30) [2024-11-18 14:25:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:43,646 INFO L93 Difference]: Finished difference Result 288 states and 510 transitions. [2024-11-18 14:25:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 14:25:43,646 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 12 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (30), 10 states have call predecessors, (30), 12 states have call successors, (30) Word has length 460 [2024-11-18 14:25:43,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:43,649 INFO L225 Difference]: With dead ends: 288 [2024-11-18 14:25:43,649 INFO L226 Difference]: Without dead ends: 146 [2024-11-18 14:25:43,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 906 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2024-11-18 14:25:43,651 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:43,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 164 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:43,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-18 14:25:43,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2024-11-18 14:25:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 100 states have (on average 1.1) internal successors, (110), 96 states have internal predecessors, (110), 24 states have call successors, (24), 18 states have call predecessors, (24), 18 states have return successors, (73), 28 states have call predecessors, (73), 24 states have call successors, (73) [2024-11-18 14:25:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 207 transitions. [2024-11-18 14:25:43,665 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 207 transitions. Word has length 460 [2024-11-18 14:25:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:43,665 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 207 transitions. [2024-11-18 14:25:43,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 12 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (30), 10 states have call predecessors, (30), 12 states have call successors, (30) [2024-11-18 14:25:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 207 transitions. [2024-11-18 14:25:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-18 14:25:43,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:43,668 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:43,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 14:25:43,872 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 [2024-11-18 14:25:43,873 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:43,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:43,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1959194284, now seen corresponding path program 10 times [2024-11-18 14:25:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:43,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471321416] [2024-11-18 14:25:43,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:25:43,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:43,911 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:25:43,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 547 proven. 151 refuted. 0 times theorem prover too weak. 3672 trivial. 0 not checked. [2024-11-18 14:25:44,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:44,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471321416] [2024-11-18 14:25:44,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471321416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598150093] [2024-11-18 14:25:44,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:25:44,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:44,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:44,128 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) [2024-11-18 14:25:44,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:25:44,342 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:25:44,342 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:44,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:25:44,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 655 proven. 176 refuted. 0 times theorem prover too weak. 3539 trivial. 0 not checked. [2024-11-18 14:25:44,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 659 proven. 188 refuted. 0 times theorem prover too weak. 3523 trivial. 0 not checked. [2024-11-18 14:25:45,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598150093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:45,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:45,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 18 [2024-11-18 14:25:45,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043513601] [2024-11-18 14:25:45,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:45,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:25:45,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:45,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:25:45,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:25:45,814 INFO L87 Difference]: Start difference. First operand 143 states and 207 transitions. Second operand has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-18 14:25:45,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:45,964 INFO L93 Difference]: Finished difference Result 160 states and 237 transitions. [2024-11-18 14:25:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:25:45,964 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) Word has length 392 [2024-11-18 14:25:45,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:45,967 INFO L225 Difference]: With dead ends: 160 [2024-11-18 14:25:45,967 INFO L226 Difference]: Without dead ends: 156 [2024-11-18 14:25:45,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 772 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:25:45,968 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:45,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 171 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:45,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-18 14:25:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 148. [2024-11-18 14:25:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 103 states have (on average 1.0970873786407767) internal successors, (113), 99 states have internal predecessors, (113), 25 states have call successors, (25), 18 states have call predecessors, (25), 19 states have return successors, (79), 30 states have call predecessors, (79), 25 states have call successors, (79) [2024-11-18 14:25:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 217 transitions. [2024-11-18 14:25:45,983 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 217 transitions. Word has length 392 [2024-11-18 14:25:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:45,984 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 217 transitions. [2024-11-18 14:25:45,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-18 14:25:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 217 transitions. [2024-11-18 14:25:45,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2024-11-18 14:25:45,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:45,991 INFO L215 NwaCegarLoop]: trace histogram [71, 71, 70, 70, 58, 57, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 23, 22, 14, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:46,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 14:25:46,192 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 [2024-11-18 14:25:46,192 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:46,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:46,192 INFO L85 PathProgramCache]: Analyzing trace with hash 995013476, now seen corresponding path program 11 times [2024-11-18 14:25:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:46,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252592753] [2024-11-18 14:25:46,193 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:46,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:46,286 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-18 14:25:46,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 27609 backedges. 1239 proven. 1818 refuted. 0 times theorem prover too weak. 24552 trivial. 0 not checked. [2024-11-18 14:25:46,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:46,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252592753] [2024-11-18 14:25:46,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252592753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:46,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399427209] [2024-11-18 14:25:46,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:46,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:46,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:46,659 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) [2024-11-18 14:25:46,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 14:25:46,988 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-18 14:25:46,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:46,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 14:25:47,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 27609 backedges. 14403 proven. 96 refuted. 0 times theorem prover too weak. 13110 trivial. 0 not checked. [2024-11-18 14:25:47,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 27609 backedges. 1128 proven. 1430 refuted. 0 times theorem prover too weak. 25051 trivial. 0 not checked. [2024-11-18 14:25:49,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399427209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:49,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:49,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 25 [2024-11-18 14:25:49,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954057968] [2024-11-18 14:25:49,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:49,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 14:25:49,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:49,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 14:25:49,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:25:49,905 INFO L87 Difference]: Start difference. First operand 148 states and 217 transitions. Second operand has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 15 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (38), 17 states have call predecessors, (38), 15 states have call successors, (38) [2024-11-18 14:25:50,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:50,258 INFO L93 Difference]: Finished difference Result 321 states and 534 transitions. [2024-11-18 14:25:50,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 14:25:50,259 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 15 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (38), 17 states have call predecessors, (38), 15 states have call successors, (38) Word has length 965 [2024-11-18 14:25:50,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:50,261 INFO L225 Difference]: With dead ends: 321 [2024-11-18 14:25:50,261 INFO L226 Difference]: Without dead ends: 176 [2024-11-18 14:25:50,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1957 GetRequests, 1916 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=1101, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 14:25:50,263 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 41 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:50,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 269 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:25:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-18 14:25:50,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 168. [2024-11-18 14:25:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 117 states have (on average 1.0854700854700854) internal successors, (127), 113 states have internal predecessors, (127), 31 states have call successors, (31), 22 states have call predecessors, (31), 19 states have return successors, (99), 32 states have call predecessors, (99), 31 states have call successors, (99) [2024-11-18 14:25:50,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 257 transitions. [2024-11-18 14:25:50,280 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 257 transitions. Word has length 965 [2024-11-18 14:25:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:50,281 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 257 transitions. [2024-11-18 14:25:50,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 15 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (38), 17 states have call predecessors, (38), 15 states have call successors, (38) [2024-11-18 14:25:50,281 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 257 transitions. [2024-11-18 14:25:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-18 14:25:50,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:50,287 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 55, 55, 48, 46, 30, 30, 30, 30, 30, 30, 30, 27, 27, 27, 27, 27, 27, 27, 19, 18, 14, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:50,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 14:25:50,490 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 [2024-11-18 14:25:50,491 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:50,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:50,491 INFO L85 PathProgramCache]: Analyzing trace with hash 2116777007, now seen corresponding path program 12 times [2024-11-18 14:25:50,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:50,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535181171] [2024-11-18 14:25:50,491 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:50,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:50,552 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-18 14:25:50,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18327 backedges. 1974 proven. 124 refuted. 0 times theorem prover too weak. 16229 trivial. 0 not checked. [2024-11-18 14:25:50,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:50,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535181171] [2024-11-18 14:25:50,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535181171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:50,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409017937] [2024-11-18 14:25:50,827 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:50,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:50,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:50,829 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) [2024-11-18 14:25:50,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 14:25:51,151 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-18 14:25:51,152 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:51,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:25:51,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18327 backedges. 3432 proven. 51 refuted. 0 times theorem prover too weak. 14844 trivial. 0 not checked. [2024-11-18 14:25:51,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18327 backedges. 1972 proven. 127 refuted. 0 times theorem prover too weak. 16228 trivial. 0 not checked. [2024-11-18 14:25:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409017937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:53,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:53,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 19 [2024-11-18 14:25:53,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130281143] [2024-11-18 14:25:53,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:53,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:25:53,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:25:53,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:25:53,574 INFO L87 Difference]: Start difference. First operand 168 states and 257 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 10 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2024-11-18 14:25:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:53,827 INFO L93 Difference]: Finished difference Result 335 states and 545 transitions. [2024-11-18 14:25:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 14:25:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 10 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) Word has length 788 [2024-11-18 14:25:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:53,831 INFO L225 Difference]: With dead ends: 335 [2024-11-18 14:25:53,832 INFO L226 Difference]: Without dead ends: 174 [2024-11-18 14:25:53,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1597 GetRequests, 1564 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-11-18 14:25:53,835 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 68 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:53,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 222 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:25:53,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-18 14:25:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 163. [2024-11-18 14:25:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 114 states have (on average 1.087719298245614) internal successors, (124), 110 states have internal predecessors, (124), 30 states have call successors, (30), 22 states have call predecessors, (30), 18 states have return successors, (88), 30 states have call predecessors, (88), 30 states have call successors, (88) [2024-11-18 14:25:53,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 242 transitions. [2024-11-18 14:25:53,855 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 242 transitions. Word has length 788 [2024-11-18 14:25:53,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:53,856 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 242 transitions. [2024-11-18 14:25:53,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 10 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2024-11-18 14:25:53,857 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 242 transitions. [2024-11-18 14:25:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2024-11-18 14:25:53,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:53,861 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 48, 48, 41, 39, 25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 17, 14, 10, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:53,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-18 14:25:54,065 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 [2024-11-18 14:25:54,066 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:54,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:54,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1162694277, now seen corresponding path program 13 times [2024-11-18 14:25:54,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:54,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829644402] [2024-11-18 14:25:54,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:25:54,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13477 backedges. 470 proven. 1139 refuted. 0 times theorem prover too weak. 11868 trivial. 0 not checked. [2024-11-18 14:25:54,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829644402] [2024-11-18 14:25:54,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829644402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039850988] [2024-11-18 14:25:54,784 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:25:54,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:54,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:54,786 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) [2024-11-18 14:25:54,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 14:25:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:55,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 14:25:55,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 13477 backedges. 532 proven. 1486 refuted. 0 times theorem prover too weak. 11459 trivial. 0 not checked. [2024-11-18 14:25:55,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13477 backedges. 534 proven. 1514 refuted. 0 times theorem prover too weak. 11429 trivial. 0 not checked. [2024-11-18 14:25:58,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039850988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:58,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:58,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 25 [2024-11-18 14:25:58,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097137403] [2024-11-18 14:25:58,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:58,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 14:25:58,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:58,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 14:25:58,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:25:58,491 INFO L87 Difference]: Start difference. First operand 163 states and 242 transitions. Second operand has 25 states, 24 states have (on average 3.375) internal successors, (81), 25 states have internal predecessors, (81), 18 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 13 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-18 14:25:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:58,783 INFO L93 Difference]: Finished difference Result 193 states and 325 transitions. [2024-11-18 14:25:58,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:25:58,784 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.375) internal successors, (81), 25 states have internal predecessors, (81), 18 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 13 states have call predecessors, (30), 18 states have call successors, (30) Word has length 678 [2024-11-18 14:25:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:58,786 INFO L225 Difference]: With dead ends: 193 [2024-11-18 14:25:58,786 INFO L226 Difference]: Without dead ends: 159 [2024-11-18 14:25:58,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1379 GetRequests, 1339 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 14:25:58,789 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 13 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:58,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 485 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:25:58,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-18 14:25:58,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2024-11-18 14:25:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 105 states have (on average 1.0761904761904761) internal successors, (113), 102 states have internal predecessors, (113), 28 states have call successors, (28), 19 states have call predecessors, (28), 18 states have return successors, (69), 30 states have call predecessors, (69), 28 states have call successors, (69) [2024-11-18 14:25:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 210 transitions. [2024-11-18 14:25:58,803 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 210 transitions. Word has length 678 [2024-11-18 14:25:58,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:58,804 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 210 transitions. [2024-11-18 14:25:58,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.375) internal successors, (81), 25 states have internal predecessors, (81), 18 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 13 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-18 14:25:58,804 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 210 transitions. [2024-11-18 14:25:58,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-11-18 14:25:58,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:58,807 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 25, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:58,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-18 14:25:59,011 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 [2024-11-18 14:25:59,012 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:59,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:59,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2132859978, now seen corresponding path program 14 times [2024-11-18 14:25:59,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:59,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62710536] [2024-11-18 14:25:59,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:59,054 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:59,055 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 341 proven. 409 refuted. 0 times theorem prover too weak. 4266 trivial. 0 not checked. [2024-11-18 14:25:59,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:59,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62710536] [2024-11-18 14:25:59,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62710536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:59,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708276257] [2024-11-18 14:25:59,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:59,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:59,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:59,316 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) [2024-11-18 14:25:59,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 14:25:59,600 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:59,600 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:59,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:25:59,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 397 proven. 499 refuted. 0 times theorem prover too weak. 4120 trivial. 0 not checked. [2024-11-18 14:25:59,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 399 proven. 513 refuted. 0 times theorem prover too weak. 4104 trivial. 0 not checked. [2024-11-18 14:26:01,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708276257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:01,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:01,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 18 [2024-11-18 14:26:01,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469602709] [2024-11-18 14:26:01,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:01,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:26:01,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:01,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:26:01,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:26:01,183 INFO L87 Difference]: Start difference. First operand 152 states and 210 transitions. Second operand has 18 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 13 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 9 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-18 14:26:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:01,325 INFO L93 Difference]: Finished difference Result 172 states and 246 transitions. [2024-11-18 14:26:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:26:01,326 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 13 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 9 states have call predecessors, (22), 13 states have call successors, (22) Word has length 419 [2024-11-18 14:26:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:01,328 INFO L225 Difference]: With dead ends: 172 [2024-11-18 14:26:01,328 INFO L226 Difference]: Without dead ends: 165 [2024-11-18 14:26:01,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 826 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:26:01,330 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:01,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 158 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:26:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-18 14:26:01,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 152. [2024-11-18 14:26:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 105 states have (on average 1.0761904761904761) internal successors, (113), 102 states have internal predecessors, (113), 28 states have call successors, (28), 19 states have call predecessors, (28), 18 states have return successors, (69), 30 states have call predecessors, (69), 28 states have call successors, (69) [2024-11-18 14:26:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 210 transitions. [2024-11-18 14:26:01,349 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 210 transitions. Word has length 419 [2024-11-18 14:26:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:01,349 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 210 transitions. [2024-11-18 14:26:01,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 13 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 9 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-18 14:26:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 210 transitions. [2024-11-18 14:26:01,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2024-11-18 14:26:01,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:01,354 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 48, 48, 39, 39, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 15, 15, 10, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:01,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-18 14:26:01,554 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 [2024-11-18 14:26:01,555 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:01,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1275973140, now seen corresponding path program 15 times [2024-11-18 14:26:01,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:01,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172222466] [2024-11-18 14:26:01,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:26:01,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:01,623 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-18 14:26:01,624 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12906 backedges. 1603 proven. 125 refuted. 0 times theorem prover too weak. 11178 trivial. 0 not checked. [2024-11-18 14:26:01,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:01,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172222466] [2024-11-18 14:26:01,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172222466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:01,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977155580] [2024-11-18 14:26:01,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:26:01,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:01,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:01,944 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) [2024-11-18 14:26:01,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 14:26:02,317 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-18 14:26:02,318 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:02,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 14:26:02,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12906 backedges. 1780 proven. 145 refuted. 0 times theorem prover too weak. 10981 trivial. 0 not checked. [2024-11-18 14:26:02,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12906 backedges. 1780 proven. 152 refuted. 0 times theorem prover too weak. 10974 trivial. 0 not checked. [2024-11-18 14:26:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977155580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:04,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:04,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 17] total 26 [2024-11-18 14:26:04,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240017251] [2024-11-18 14:26:04,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:04,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 14:26:04,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 14:26:04,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:26:04,496 INFO L87 Difference]: Start difference. First operand 152 states and 210 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 14 states have call successors, (26), 1 states have call predecessors, (26), 10 states have return successors, (30), 16 states have call predecessors, (30), 14 states have call successors, (30) [2024-11-18 14:26:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:04,854 INFO L93 Difference]: Finished difference Result 340 states and 523 transitions. [2024-11-18 14:26:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 14:26:04,854 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 14 states have call successors, (26), 1 states have call predecessors, (26), 10 states have return successors, (30), 16 states have call predecessors, (30), 14 states have call successors, (30) Word has length 664 [2024-11-18 14:26:04,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:04,858 INFO L225 Difference]: With dead ends: 340 [2024-11-18 14:26:04,858 INFO L226 Difference]: Without dead ends: 193 [2024-11-18 14:26:04,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1355 GetRequests, 1311 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 14:26:04,860 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 49 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:04,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 316 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:26:04,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-18 14:26:04,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2024-11-18 14:26:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 126 states have (on average 1.0634920634920635) internal successors, (134), 121 states have internal predecessors, (134), 33 states have call successors, (33), 22 states have call predecessors, (33), 22 states have return successors, (95), 38 states have call predecessors, (95), 33 states have call successors, (95) [2024-11-18 14:26:04,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 262 transitions. [2024-11-18 14:26:04,878 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 262 transitions. Word has length 664 [2024-11-18 14:26:04,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:04,878 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 262 transitions. [2024-11-18 14:26:04,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 14 states have call successors, (26), 1 states have call predecessors, (26), 10 states have return successors, (30), 16 states have call predecessors, (30), 14 states have call successors, (30) [2024-11-18 14:26:04,879 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 262 transitions. [2024-11-18 14:26:04,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2024-11-18 14:26:04,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:04,882 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 41, 41, 36, 33, 23, 23, 23, 23, 23, 23, 23, 20, 20, 20, 20, 20, 20, 20, 16, 10, 10, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:04,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-18 14:26:05,083 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 [2024-11-18 14:26:05,083 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:05,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1391666183, now seen corresponding path program 16 times [2024-11-18 14:26:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:05,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560140699] [2024-11-18 14:26:05,084 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:26:05,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:05,174 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:26:05,175 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10350 backedges. 491 proven. 681 refuted. 0 times theorem prover too weak. 9178 trivial. 0 not checked. [2024-11-18 14:26:05,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:05,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560140699] [2024-11-18 14:26:05,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560140699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:05,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540128352] [2024-11-18 14:26:05,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:26:05,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:05,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:05,599 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:26:05,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 14:26:05,953 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:26:05,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:05,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:26:05,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10350 backedges. 561 proven. 765 refuted. 0 times theorem prover too weak. 9024 trivial. 0 not checked. [2024-11-18 14:26:06,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10350 backedges. 563 proven. 779 refuted. 0 times theorem prover too weak. 9008 trivial. 0 not checked. [2024-11-18 14:26:07,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540128352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:07,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:07,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-18 14:26:07,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008052272] [2024-11-18 14:26:07,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:07,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 14:26:07,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:07,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 14:26:07,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:26:07,926 INFO L87 Difference]: Start difference. First operand 182 states and 262 transitions. Second operand has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 12 states have call successors, (21), 1 states have call predecessors, (21), 7 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-18 14:26:08,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:08,123 INFO L93 Difference]: Finished difference Result 209 states and 325 transitions. [2024-11-18 14:26:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:26:08,123 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 12 states have call successors, (21), 1 states have call predecessors, (21), 7 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) Word has length 595 [2024-11-18 14:26:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:08,126 INFO L225 Difference]: With dead ends: 209 [2024-11-18 14:26:08,126 INFO L226 Difference]: Without dead ends: 179 [2024-11-18 14:26:08,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 1178 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:26:08,129 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:08,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 234 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:26:08,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-18 14:26:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-18 14:26:08,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 124 states have (on average 1.064516129032258) internal successors, (132), 119 states have internal predecessors, (132), 33 states have call successors, (33), 22 states have call predecessors, (33), 21 states have return successors, (83), 37 states have call predecessors, (83), 33 states have call successors, (83) [2024-11-18 14:26:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 248 transitions. [2024-11-18 14:26:08,144 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 248 transitions. Word has length 595 [2024-11-18 14:26:08,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:08,145 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 248 transitions. [2024-11-18 14:26:08,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 12 states have call successors, (21), 1 states have call predecessors, (21), 7 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-18 14:26:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 248 transitions. [2024-11-18 14:26:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-11-18 14:26:08,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:08,148 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 33, 33, 28, 27, 18, 18, 18, 18, 18, 18, 18, 16, 16, 16, 16, 16, 16, 16, 12, 9, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:08,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-18 14:26:08,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:08,349 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:08,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash -284674768, now seen corresponding path program 17 times [2024-11-18 14:26:08,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:08,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363740003] [2024-11-18 14:26:08,350 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:26:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:08,418 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-11-18 14:26:08,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6453 backedges. 1146 proven. 233 refuted. 0 times theorem prover too weak. 5074 trivial. 0 not checked. [2024-11-18 14:26:08,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:08,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363740003] [2024-11-18 14:26:08,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363740003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:08,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314453120] [2024-11-18 14:26:08,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:26:08,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:08,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:08,874 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:26:08,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 14:26:09,199 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-11-18 14:26:09,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:09,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 14:26:09,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6453 backedges. 1258 proven. 235 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2024-11-18 14:26:09,276 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6453 backedges. 1258 proven. 244 refuted. 0 times theorem prover too weak. 4951 trivial. 0 not checked. [2024-11-18 14:26:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314453120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:11,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:11,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 19] total 26 [2024-11-18 14:26:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156648435] [2024-11-18 14:26:11,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:11,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 14:26:11,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:11,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 14:26:11,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:26:11,156 INFO L87 Difference]: Start difference. First operand 179 states and 248 transitions. Second operand has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 17 states have call successors, (26), 1 states have call predecessors, (26), 10 states have return successors, (30), 14 states have call predecessors, (30), 17 states have call successors, (30) [2024-11-18 14:26:11,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:11,611 INFO L93 Difference]: Finished difference Result 378 states and 555 transitions. [2024-11-18 14:26:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 14:26:11,612 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 17 states have call successors, (26), 1 states have call predecessors, (26), 10 states have return successors, (30), 14 states have call predecessors, (30), 17 states have call successors, (30) Word has length 473 [2024-11-18 14:26:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:11,615 INFO L225 Difference]: With dead ends: 378 [2024-11-18 14:26:11,616 INFO L226 Difference]: Without dead ends: 202 [2024-11-18 14:26:11,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 985 GetRequests, 930 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1880, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 14:26:11,618 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 95 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:11,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 276 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:26:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-18 14:26:11,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2024-11-18 14:26:11,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 140 states have (on average 1.0714285714285714) internal successors, (150), 133 states have internal predecessors, (150), 37 states have call successors, (37), 26 states have call predecessors, (37), 22 states have return successors, (88), 40 states have call predecessors, (88), 37 states have call successors, (88) [2024-11-18 14:26:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 275 transitions. [2024-11-18 14:26:11,638 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 275 transitions. Word has length 473 [2024-11-18 14:26:11,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:11,639 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 275 transitions. [2024-11-18 14:26:11,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 17 states have call successors, (26), 1 states have call predecessors, (26), 10 states have return successors, (30), 14 states have call predecessors, (30), 17 states have call successors, (30) [2024-11-18 14:26:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 275 transitions. [2024-11-18 14:26:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2024-11-18 14:26:11,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:11,644 INFO L215 NwaCegarLoop]: trace histogram [58, 58, 55, 55, 46, 45, 29, 29, 29, 29, 29, 29, 29, 27, 27, 27, 27, 27, 27, 27, 18, 17, 13, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:11,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-18 14:26:11,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:11,845 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:11,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:11,846 INFO L85 PathProgramCache]: Analyzing trace with hash 322826346, now seen corresponding path program 18 times [2024-11-18 14:26:11,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:11,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172645622] [2024-11-18 14:26:11,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:26:11,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:11,903 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-11-18 14:26:11,903 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 17605 backedges. 725 proven. 1424 refuted. 0 times theorem prover too weak. 15456 trivial. 0 not checked. [2024-11-18 14:26:12,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172645622] [2024-11-18 14:26:12,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172645622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84345477] [2024-11-18 14:26:12,353 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:26:12,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:12,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:12,355 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:26:12,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-18 14:26:12,709 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-11-18 14:26:12,709 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:12,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 14:26:12,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 17605 backedges. 723 proven. 1417 refuted. 0 times theorem prover too weak. 15465 trivial. 0 not checked. [2024-11-18 14:26:12,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 17605 backedges. 720 proven. 1441 refuted. 0 times theorem prover too weak. 15444 trivial. 0 not checked. [2024-11-18 14:26:15,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84345477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:15,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:15,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 18] total 25 [2024-11-18 14:26:15,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62581817] [2024-11-18 14:26:15,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:15,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 14:26:15,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 14:26:15,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:26:15,846 INFO L87 Difference]: Start difference. First operand 200 states and 275 transitions. Second operand has 25 states, 23 states have (on average 3.391304347826087) internal successors, (78), 25 states have internal predecessors, (78), 18 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (28), 11 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-18 14:26:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:16,137 INFO L93 Difference]: Finished difference Result 262 states and 385 transitions. [2024-11-18 14:26:16,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:26:16,138 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.391304347826087) internal successors, (78), 25 states have internal predecessors, (78), 18 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (28), 11 states have call predecessors, (28), 18 states have call successors, (28) Word has length 773 [2024-11-18 14:26:16,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:16,142 INFO L225 Difference]: With dead ends: 262 [2024-11-18 14:26:16,142 INFO L226 Difference]: Without dead ends: 200 [2024-11-18 14:26:16,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1571 GetRequests, 1532 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=826, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 14:26:16,145 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 30 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:16,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 407 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:26:16,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-18 14:26:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-11-18 14:26:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 140 states have (on average 1.0714285714285714) internal successors, (150), 133 states have internal predecessors, (150), 37 states have call successors, (37), 26 states have call predecessors, (37), 22 states have return successors, (82), 40 states have call predecessors, (82), 37 states have call successors, (82) [2024-11-18 14:26:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 269 transitions. [2024-11-18 14:26:16,172 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 269 transitions. Word has length 773 [2024-11-18 14:26:16,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:16,173 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 269 transitions. [2024-11-18 14:26:16,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.391304347826087) internal successors, (78), 25 states have internal predecessors, (78), 18 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (28), 11 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-18 14:26:16,173 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 269 transitions. [2024-11-18 14:26:16,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-18 14:26:16,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:16,178 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] [2024-11-18 14:26:16,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-18 14:26:16,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 14:26:16,379 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:16,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1402769443, now seen corresponding path program 19 times [2024-11-18 14:26:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:16,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969140420] [2024-11-18 14:26:16,380 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:26:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:26:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-11-18 14:26:20,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:20,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969140420] [2024-11-18 14:26:20,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969140420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:20,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22529074] [2024-11-18 14:26:20,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:26:20,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:20,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:20,526 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:26:20,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-18 14:26:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:26:20,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 271 conjuncts are in the unsatisfiable core [2024-11-18 14:26:20,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-11-18 14:26:21,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:23,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-11-18 14:26:23,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22529074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:23,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:23,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 52 [2024-11-18 14:26:23,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930966279] [2024-11-18 14:26:23,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:23,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-18 14:26:23,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-18 14:26:23,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2024-11-18 14:26:23,436 INFO L87 Difference]: Start difference. First operand 200 states and 269 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) [2024-11-18 14:26:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:24,036 INFO L93 Difference]: Finished difference Result 227 states and 309 transitions. [2024-11-18 14:26:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-18 14:26:24,036 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 [2024-11-18 14:26:24,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:24,038 INFO L225 Difference]: With dead ends: 227 [2024-11-18 14:26:24,038 INFO L226 Difference]: Without dead ends: 220 [2024-11-18 14:26:24,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1005 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2024-11-18 14:26:24,040 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:24,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2874 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:26:24,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-18 14:26:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 215. [2024-11-18 14:26:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 149 states have (on average 1.0671140939597314) internal successors, (159), 142 states have internal predecessors, (159), 40 states have call successors, (40), 26 states have call predecessors, (40), 25 states have return successors, (98), 46 states have call predecessors, (98), 40 states have call successors, (98) [2024-11-18 14:26:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 297 transitions. [2024-11-18 14:26:24,060 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 297 transitions. Word has length 460 [2024-11-18 14:26:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:24,061 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 297 transitions. [2024-11-18 14:26:24,061 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) [2024-11-18 14:26:24,061 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 297 transitions. [2024-11-18 14:26:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-18 14:26:24,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:24,064 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 29, 28, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 11, 11, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:24,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-18 14:26:24,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 14:26:24,265 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:24,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:24,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1131520141, now seen corresponding path program 20 times [2024-11-18 14:26:24,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:24,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187905121] [2024-11-18 14:26:24,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:26:24,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:24,335 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:26:24,335 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6840 backedges. 313 proven. 809 refuted. 0 times theorem prover too weak. 5718 trivial. 0 not checked. [2024-11-18 14:26:24,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:24,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187905121] [2024-11-18 14:26:24,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187905121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:24,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834130909] [2024-11-18 14:26:24,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:26:24,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:24,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:24,705 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:26:24,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-18 14:26:25,106 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:26:25,107 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:25,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 14:26:25,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6840 backedges. 346 proven. 1052 refuted. 0 times theorem prover too weak. 5442 trivial. 0 not checked. [2024-11-18 14:26:25,230 INFO L311 TraceCheckSpWp]: Computing backward predicates...