./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_15-2.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 79b24a1d7d86eb80482889a13c0517d1f5f9d33286d66b099b5dbfdfe805f8a9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:08:06,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:08:06,518 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:08:06,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:08:06,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:08:06,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:08:06,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:08:06,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:08:06,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:08:06,557 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:08:06,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:08:06,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:08:06,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:08:06,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:08:06,558 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:08:06,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:08:06,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:08:06,563 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:08:06,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:08:06,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:08:06,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:08:06,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:08:06,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:08:06,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:08:06,565 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:08:06,565 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:08:06,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:08:06,566 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:08:06,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:08:06,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:08:06,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:08:06,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:08:06,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:08:06,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:08:06,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:08:06,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:08:06,568 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:08:06,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:08:06,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:08:06,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:08:06,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:08:06,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:08:06,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b24a1d7d86eb80482889a13c0517d1f5f9d33286d66b099b5dbfdfe805f8a9 [2024-11-22 02:08:06,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:08:06,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:08:06,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:08:06,876 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:08:06,876 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:08:06,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_15-2.c [2024-11-22 02:08:08,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:08:08,487 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:08:08,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_15-2.c [2024-11-22 02:08:08,495 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ada6b938/0c9911e9346543e5a55837038192a431/FLAGc3557242a [2024-11-22 02:08:08,511 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ada6b938/0c9911e9346543e5a55837038192a431 [2024-11-22 02:08:08,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:08:08,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:08:08,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:08:08,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:08:08,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:08:08,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a928b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08, skipping insertion in model container [2024-11-22 02:08:08,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,542 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:08:08,730 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_15-2.c[744,757] [2024-11-22 02:08:08,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:08:08,746 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:08:08,757 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_15-2.c[744,757] [2024-11-22 02:08:08,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:08:08,771 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:08:08,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08 WrapperNode [2024-11-22 02:08:08,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:08:08,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:08:08,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:08:08,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:08:08,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,802 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-22 02:08:08,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:08:08,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:08:08,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:08:08,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:08:08,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,815 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,824 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 02:08:08,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,831 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:08:08,832 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:08:08,832 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:08:08,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:08:08,833 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (1/1) ... [2024-11-22 02:08:08,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:08:08,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:08,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 02:08:08,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 02:08:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:08:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:08:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:08:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:08:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-22 02:08:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-22 02:08:09,010 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:08:09,013 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:08:09,188 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-22 02:08:09,191 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:08:09,206 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:08:09,206 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:08:09,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:08:09 BoogieIcfgContainer [2024-11-22 02:08:09,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:08:09,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:08:09,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:08:09,214 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:08:09,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:08:08" (1/3) ... [2024-11-22 02:08:09,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2027bc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:08:09, skipping insertion in model container [2024-11-22 02:08:09,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:08" (2/3) ... [2024-11-22 02:08:09,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2027bc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:08:09, skipping insertion in model container [2024-11-22 02:08:09,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:08:09" (3/3) ... [2024-11-22 02:08:09,218 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_15-2.c [2024-11-22 02:08:09,234 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:08:09,235 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:08:09,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:08:09,299 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;@59b17304, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:08:09,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:08:09,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:08:09,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 02:08:09,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:09,313 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:09,314 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:09,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:09,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2024-11-22 02:08:09,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:09,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852392919] [2024-11-22 02:08:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:09,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:08:09,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:09,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852392919] [2024-11-22 02:08:09,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852392919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:08:09,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:08:09,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:08:09,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833475298] [2024-11-22 02:08:09,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:08:09,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:08:09,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:09,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:08:09,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:08:09,650 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:08:09,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:09,694 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2024-11-22 02:08:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:08:09,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-22 02:08:09,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:09,702 INFO L225 Difference]: With dead ends: 30 [2024-11-22 02:08:09,703 INFO L226 Difference]: Without dead ends: 18 [2024-11-22 02:08:09,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:08:09,708 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:09,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:08:09,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-22 02:08:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-22 02:08:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-22 02:08:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-22 02:08:09,743 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-11-22 02:08:09,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:09,744 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-22 02:08:09,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:08:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-22 02:08:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 02:08:09,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:09,745 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:09,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:08:09,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:09,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:09,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2024-11-22 02:08:09,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:09,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031877685] [2024-11-22 02:08:09,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:09,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:08:09,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:09,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031877685] [2024-11-22 02:08:09,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031877685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:08:09,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:08:09,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:08:09,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534304036] [2024-11-22 02:08:09,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:08:09,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:08:09,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:08:09,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:08:09,844 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:08:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:09,865 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2024-11-22 02:08:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:08:09,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-22 02:08:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:09,866 INFO L225 Difference]: With dead ends: 24 [2024-11-22 02:08:09,866 INFO L226 Difference]: Without dead ends: 20 [2024-11-22 02:08:09,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:08:09,868 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:09,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:08:09,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-22 02:08:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-22 02:08:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-22 02:08:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-22 02:08:09,874 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2024-11-22 02:08:09,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:09,874 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-22 02:08:09,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:08:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-22 02:08:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 02:08:09,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:09,875 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:09,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:08:09,876 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:09,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:09,876 INFO L85 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2024-11-22 02:08:09,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:09,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085931895] [2024-11-22 02:08:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:09,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:08:10,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:10,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085931895] [2024-11-22 02:08:10,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085931895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:10,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805711887] [2024-11-22 02:08:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:10,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:10,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:10,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:10,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:08:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:10,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:08:10,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:08:10,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 02:08:10,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805711887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:10,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:10,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 11 [2024-11-22 02:08:10,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40704373] [2024-11-22 02:08:10,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:10,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 02:08:10,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:10,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 02:08:10,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:08:10,474 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:08:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:10,621 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-22 02:08:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:08:10,622 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2024-11-22 02:08:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:10,624 INFO L225 Difference]: With dead ends: 35 [2024-11-22 02:08:10,625 INFO L226 Difference]: Without dead ends: 20 [2024-11-22 02:08:10,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:08:10,627 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:10,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:08:10,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-22 02:08:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-22 02:08:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 02:08:10,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-22 02:08:10,633 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2024-11-22 02:08:10,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:10,634 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-22 02:08:10,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 02:08:10,634 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-22 02:08:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 02:08:10,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:10,635 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:10,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 02:08:10,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:10,840 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:10,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:10,841 INFO L85 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2024-11-22 02:08:10,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:10,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112678293] [2024-11-22 02:08:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:10,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:08:10,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112678293] [2024-11-22 02:08:10,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112678293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14902110] [2024-11-22 02:08:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:08:10,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:10,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:10,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:10,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:08:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:10,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:08:11,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:08:11,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 02:08:11,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14902110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:11,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:11,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2024-11-22 02:08:11,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922378969] [2024-11-22 02:08:11,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:11,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 02:08:11,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:11,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 02:08:11,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:08:11,259 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:08:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:11,350 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-22 02:08:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:08:11,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2024-11-22 02:08:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:11,352 INFO L225 Difference]: With dead ends: 29 [2024-11-22 02:08:11,352 INFO L226 Difference]: Without dead ends: 25 [2024-11-22 02:08:11,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:08:11,356 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:11,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:08:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-22 02:08:11,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-22 02:08:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-22 02:08:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2024-11-22 02:08:11,368 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 24 [2024-11-22 02:08:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:11,368 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2024-11-22 02:08:11,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:08:11,369 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2024-11-22 02:08:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-22 02:08:11,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:11,371 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:11,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 02:08:11,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-22 02:08:11,575 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:11,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:11,576 INFO L85 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2024-11-22 02:08:11,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:11,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833874167] [2024-11-22 02:08:11,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:08:11,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:11,592 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:08:11,592 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 02:08:11,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:11,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833874167] [2024-11-22 02:08:11,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833874167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:11,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991690330] [2024-11-22 02:08:11,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:08:11,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:11,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:11,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:11,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:08:11,904 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:08:11,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:11,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:08:11,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 02:08:12,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 02:08:12,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991690330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:12,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:12,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 20 [2024-11-22 02:08:12,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164229406] [2024-11-22 02:08:12,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:12,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 02:08:12,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:12,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 02:08:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:08:12,426 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 20 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-22 02:08:12,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:12,717 INFO L93 Difference]: Finished difference Result 46 states and 83 transitions. [2024-11-22 02:08:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:08:12,718 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2024-11-22 02:08:12,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:12,720 INFO L225 Difference]: With dead ends: 46 [2024-11-22 02:08:12,720 INFO L226 Difference]: Without dead ends: 42 [2024-11-22 02:08:12,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2024-11-22 02:08:12,726 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:12,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 95 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:08:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-22 02:08:12,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2024-11-22 02:08:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-22 02:08:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 46 transitions. [2024-11-22 02:08:12,742 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 46 transitions. Word has length 37 [2024-11-22 02:08:12,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:12,742 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 46 transitions. [2024-11-22 02:08:12,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-22 02:08:12,742 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 46 transitions. [2024-11-22 02:08:12,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-22 02:08:12,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:12,748 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 8, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:12,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 02:08:12,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:12,950 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:12,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash 710953508, now seen corresponding path program 3 times [2024-11-22 02:08:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769530497] [2024-11-22 02:08:12,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:12,971 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 02:08:12,972 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 167 proven. 27 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-22 02:08:13,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:13,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769530497] [2024-11-22 02:08:13,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769530497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:13,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385896051] [2024-11-22 02:08:13,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:13,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:13,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:13,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:13,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:08:13,134 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 02:08:13,135 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:13,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:08:13,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 207 proven. 12 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-22 02:08:13,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 169 proven. 25 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-22 02:08:13,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385896051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:13,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:13,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 13 [2024-11-22 02:08:13,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573993055] [2024-11-22 02:08:13,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:13,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 02:08:13,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:13,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 02:08:13,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-22 02:08:13,661 INFO L87 Difference]: Start difference. First operand 30 states and 46 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-22 02:08:13,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:13,764 INFO L93 Difference]: Finished difference Result 62 states and 110 transitions. [2024-11-22 02:08:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:08:13,765 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) Word has length 90 [2024-11-22 02:08:13,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:13,768 INFO L225 Difference]: With dead ends: 62 [2024-11-22 02:08:13,768 INFO L226 Difference]: Without dead ends: 35 [2024-11-22 02:08:13,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 172 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:08:13,770 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:13,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 62 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:08:13,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-22 02:08:13,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-11-22 02:08:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-22 02:08:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2024-11-22 02:08:13,785 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 90 [2024-11-22 02:08:13,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:13,786 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2024-11-22 02:08:13,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-22 02:08:13,786 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2024-11-22 02:08:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 02:08:13,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:13,787 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:13,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 02:08:13,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:13,988 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:13,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:13,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2015531204, now seen corresponding path program 4 times [2024-11-22 02:08:13,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:13,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711749540] [2024-11-22 02:08:13,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:08:13,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:14,010 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:08:14,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 96 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-22 02:08:14,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:14,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711749540] [2024-11-22 02:08:14,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711749540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:14,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906392896] [2024-11-22 02:08:14,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:08:14,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:14,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:14,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:14,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:08:14,238 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:08:14,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:14,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:08:14,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 02:08:14,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 103 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-22 02:08:14,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906392896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:14,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:14,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 17 [2024-11-22 02:08:14,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603988529] [2024-11-22 02:08:14,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:14,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:08:14,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:14,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:08:14,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:08:14,824 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 17 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-22 02:08:15,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:15,044 INFO L93 Difference]: Finished difference Result 81 states and 135 transitions. [2024-11-22 02:08:15,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:08:15,044 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 17 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) Word has length 65 [2024-11-22 02:08:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:15,046 INFO L225 Difference]: With dead ends: 81 [2024-11-22 02:08:15,047 INFO L226 Difference]: Without dead ends: 77 [2024-11-22 02:08:15,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:08:15,048 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 84 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:15,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 70 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:08:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-22 02:08:15,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2024-11-22 02:08:15,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (38), 16 states have call predecessors, (38), 12 states have call successors, (38) [2024-11-22 02:08:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 97 transitions. [2024-11-22 02:08:15,062 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 97 transitions. Word has length 65 [2024-11-22 02:08:15,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:15,062 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 97 transitions. [2024-11-22 02:08:15,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 17 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-22 02:08:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 97 transitions. [2024-11-22 02:08:15,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-22 02:08:15,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:15,073 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 35, 21, 21, 21, 21, 21, 21, 21, 14, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:15,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 02:08:15,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:15,276 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:15,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2001495241, now seen corresponding path program 5 times [2024-11-22 02:08:15,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075957852] [2024-11-22 02:08:15,277 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:08:15,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:15,313 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-22 02:08:15,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 480 proven. 604 refuted. 0 times theorem prover too weak. 3963 trivial. 0 not checked. [2024-11-22 02:08:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075957852] [2024-11-22 02:08:15,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075957852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:15,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084441971] [2024-11-22 02:08:15,534 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:08:15,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:15,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:15,536 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:15,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:08:15,619 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-22 02:08:15,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:15,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:08:15,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 2907 proven. 92 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2024-11-22 02:08:15,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 539 proven. 765 refuted. 0 times theorem prover too weak. 3743 trivial. 0 not checked. [2024-11-22 02:08:17,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084441971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:17,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:17,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 20 [2024-11-22 02:08:17,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595875833] [2024-11-22 02:08:17,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:17,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 02:08:17,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:17,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 02:08:17,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:08:17,277 INFO L87 Difference]: Start difference. First operand 64 states and 97 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 13 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (25), 9 states have call predecessors, (25), 13 states have call successors, (25) [2024-11-22 02:08:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:17,500 INFO L93 Difference]: Finished difference Result 188 states and 375 transitions. [2024-11-22 02:08:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:08:17,501 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 13 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (25), 9 states have call predecessors, (25), 13 states have call successors, (25) Word has length 297 [2024-11-22 02:08:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:17,504 INFO L225 Difference]: With dead ends: 188 [2024-11-22 02:08:17,505 INFO L226 Difference]: Without dead ends: 129 [2024-11-22 02:08:17,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 582 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2024-11-22 02:08:17,508 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:17,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 119 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:08:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-22 02:08:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 111. [2024-11-22 02:08:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 74 states have (on average 1.054054054054054) internal successors, (78), 72 states have internal predecessors, (78), 22 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (84), 28 states have call predecessors, (84), 22 states have call successors, (84) [2024-11-22 02:08:17,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 184 transitions. [2024-11-22 02:08:17,543 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 184 transitions. Word has length 297 [2024-11-22 02:08:17,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:17,544 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 184 transitions. [2024-11-22 02:08:17,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 13 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (25), 9 states have call predecessors, (25), 13 states have call successors, (25) [2024-11-22 02:08:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 184 transitions. [2024-11-22 02:08:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-22 02:08:17,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:17,550 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 33, 17, 17, 17, 17, 17, 17, 17, 16, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:17,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 02:08:17,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:17,755 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:17,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:17,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1468134057, now seen corresponding path program 6 times [2024-11-22 02:08:17,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:17,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866863871] [2024-11-22 02:08:17,756 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:08:17,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:17,772 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-22 02:08:17,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3452 backedges. 578 proven. 2 refuted. 0 times theorem prover too weak. 2872 trivial. 0 not checked. [2024-11-22 02:08:17,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:17,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866863871] [2024-11-22 02:08:17,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866863871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:17,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873050535] [2024-11-22 02:08:17,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:08:17,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:17,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:17,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:08:17,909 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-22 02:08:17,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:17,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:08:17,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3452 backedges. 576 proven. 4 refuted. 0 times theorem prover too weak. 2872 trivial. 0 not checked. [2024-11-22 02:08:17,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3452 backedges. 576 proven. 4 refuted. 0 times theorem prover too weak. 2872 trivial. 0 not checked. [2024-11-22 02:08:18,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873050535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:18,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:18,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2024-11-22 02:08:18,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216249800] [2024-11-22 02:08:18,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:18,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 02:08:18,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:18,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 02:08:18,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:08:18,523 INFO L87 Difference]: Start difference. First operand 111 states and 184 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 02:08:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:18,618 INFO L93 Difference]: Finished difference Result 208 states and 389 transitions. [2024-11-22 02:08:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:08:18,618 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 247 [2024-11-22 02:08:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:18,620 INFO L225 Difference]: With dead ends: 208 [2024-11-22 02:08:18,620 INFO L226 Difference]: Without dead ends: 101 [2024-11-22 02:08:18,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 488 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:08:18,625 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:18,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 49 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:08:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-22 02:08:18,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-22 02:08:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 66 states have internal predecessors, (71), 20 states have call successors, (20), 10 states have call predecessors, (20), 12 states have return successors, (65), 24 states have call predecessors, (65), 20 states have call successors, (65) [2024-11-22 02:08:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 156 transitions. [2024-11-22 02:08:18,679 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 156 transitions. Word has length 247 [2024-11-22 02:08:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:18,679 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 156 transitions. [2024-11-22 02:08:18,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 02:08:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 156 transitions. [2024-11-22 02:08:18,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-22 02:08:18,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:18,686 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:18,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 02:08:18,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:18,887 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:18,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1022210831, now seen corresponding path program 7 times [2024-11-22 02:08:18,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:18,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052298069] [2024-11-22 02:08:18,888 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:08:18,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 716 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2024-11-22 02:08:19,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:19,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052298069] [2024-11-22 02:08:19,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052298069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:19,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507437364] [2024-11-22 02:08:19,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:08:19,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:19,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:19,212 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:19,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:08:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:19,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:08:19,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 716 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2024-11-22 02:08:19,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 756 refuted. 0 times theorem prover too weak. 1716 trivial. 0 not checked. [2024-11-22 02:08:20,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507437364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:20,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:20,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 17 [2024-11-22 02:08:20,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361466021] [2024-11-22 02:08:20,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:20,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:08:20,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:20,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:08:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:08:20,748 INFO L87 Difference]: Start difference. First operand 101 states and 156 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-22 02:08:20,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:20,865 INFO L93 Difference]: Finished difference Result 149 states and 297 transitions. [2024-11-22 02:08:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:08:20,866 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) Word has length 215 [2024-11-22 02:08:20,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:20,870 INFO L225 Difference]: With dead ends: 149 [2024-11-22 02:08:20,871 INFO L226 Difference]: Without dead ends: 145 [2024-11-22 02:08:20,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 422 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:08:20,872 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:20,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 86 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:08:20,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-22 02:08:20,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 106. [2024-11-22 02:08:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 69 states have internal predecessors, (74), 21 states have call successors, (21), 10 states have call predecessors, (21), 13 states have return successors, (75), 26 states have call predecessors, (75), 21 states have call successors, (75) [2024-11-22 02:08:20,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 170 transitions. [2024-11-22 02:08:20,912 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 170 transitions. Word has length 215 [2024-11-22 02:08:20,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:20,913 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 170 transitions. [2024-11-22 02:08:20,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-22 02:08:20,913 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 170 transitions. [2024-11-22 02:08:20,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-22 02:08:20,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:20,919 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:20,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 02:08:21,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 02:08:21,120 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:21,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:21,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1104926743, now seen corresponding path program 8 times [2024-11-22 02:08:21,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:21,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714968025] [2024-11-22 02:08:21,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:08:21,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:21,156 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:08:21,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 225 proven. 1327 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2024-11-22 02:08:21,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:21,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714968025] [2024-11-22 02:08:21,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714968025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:21,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980731367] [2024-11-22 02:08:21,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:08:21,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:21,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:21,609 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:21,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:08:21,754 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:08:21,754 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:21,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:08:21,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 225 proven. 1327 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2024-11-22 02:08:21,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 225 proven. 1384 refuted. 0 times theorem prover too weak. 4430 trivial. 0 not checked. [2024-11-22 02:08:23,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980731367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:23,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:23,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 19 [2024-11-22 02:08:23,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830215137] [2024-11-22 02:08:23,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:23,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 02:08:23,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:23,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 02:08:23,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-22 02:08:23,797 INFO L87 Difference]: Start difference. First operand 106 states and 170 transitions. Second operand has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-22 02:08:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:23,949 INFO L93 Difference]: Finished difference Result 161 states and 347 transitions. [2024-11-22 02:08:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:08:23,949 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) Word has length 324 [2024-11-22 02:08:23,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:23,953 INFO L225 Difference]: With dead ends: 161 [2024-11-22 02:08:23,954 INFO L226 Difference]: Without dead ends: 157 [2024-11-22 02:08:23,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 639 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:08:23,955 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:23,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 89 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:08:23,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-22 02:08:23,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 111. [2024-11-22 02:08:23,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 72 states have internal predecessors, (77), 22 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (87), 28 states have call predecessors, (87), 22 states have call successors, (87) [2024-11-22 02:08:23,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 186 transitions. [2024-11-22 02:08:23,986 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 186 transitions. Word has length 324 [2024-11-22 02:08:23,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:23,987 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 186 transitions. [2024-11-22 02:08:23,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-22 02:08:23,987 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 186 transitions. [2024-11-22 02:08:24,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2024-11-22 02:08:24,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:24,002 INFO L215 NwaCegarLoop]: trace histogram [103, 103, 83, 51, 51, 51, 51, 51, 51, 51, 32, 20, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:24,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 02:08:24,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:24,203 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:24,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:24,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1177983657, now seen corresponding path program 9 times [2024-11-22 02:08:24,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:24,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936076059] [2024-11-22 02:08:24,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:24,258 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-22 02:08:24,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 29515 backedges. 3157 proven. 125 refuted. 0 times theorem prover too weak. 26233 trivial. 0 not checked. [2024-11-22 02:08:24,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936076059] [2024-11-22 02:08:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936076059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102192972] [2024-11-22 02:08:24,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:24,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:24,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:24,466 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:24,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:08:24,647 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-22 02:08:24,648 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:24,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:08:24,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 29515 backedges. 3153 proven. 123 refuted. 0 times theorem prover too weak. 26239 trivial. 0 not checked. [2024-11-22 02:08:24,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 29515 backedges. 3153 proven. 134 refuted. 0 times theorem prover too weak. 26228 trivial. 0 not checked. [2024-11-22 02:08:26,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102192972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:26,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:26,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 13] total 18 [2024-11-22 02:08:26,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888454412] [2024-11-22 02:08:26,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:26,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:08:26,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:26,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:08:26,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:08:26,817 INFO L87 Difference]: Start difference. First operand 111 states and 186 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 7 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-22 02:08:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:27,015 INFO L93 Difference]: Finished difference Result 279 states and 610 transitions. [2024-11-22 02:08:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 02:08:27,016 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 7 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) Word has length 705 [2024-11-22 02:08:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:27,021 INFO L225 Difference]: With dead ends: 279 [2024-11-22 02:08:27,021 INFO L226 Difference]: Without dead ends: 173 [2024-11-22 02:08:27,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1428 GetRequests, 1399 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:08:27,024 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:27,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 121 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:08:27,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-22 02:08:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 149. [2024-11-22 02:08:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.030612244897959) internal successors, (101), 96 states have internal predecessors, (101), 32 states have call successors, (32), 13 states have call predecessors, (32), 18 states have return successors, (152), 39 states have call predecessors, (152), 32 states have call successors, (152) [2024-11-22 02:08:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 285 transitions. [2024-11-22 02:08:27,047 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 285 transitions. Word has length 705 [2024-11-22 02:08:27,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:27,048 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 285 transitions. [2024-11-22 02:08:27,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 7 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-22 02:08:27,048 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 285 transitions. [2024-11-22 02:08:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2024-11-22 02:08:27,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:27,055 INFO L215 NwaCegarLoop]: trace histogram [139, 139, 111, 69, 69, 69, 69, 69, 69, 69, 42, 28, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:27,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 02:08:27,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 02:08:27,256 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:27,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:27,256 INFO L85 PathProgramCache]: Analyzing trace with hash 233260297, now seen corresponding path program 10 times [2024-11-22 02:08:27,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:27,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551185631] [2024-11-22 02:08:27,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:08:27,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:27,412 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:08:27,413 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 53853 backedges. 1001 proven. 6173 refuted. 0 times theorem prover too weak. 46679 trivial. 0 not checked. [2024-11-22 02:08:28,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:28,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551185631] [2024-11-22 02:08:28,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551185631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:28,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143421554] [2024-11-22 02:08:28,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:08:28,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:28,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:28,298 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:28,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 02:08:28,607 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:08:28,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:28,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 1686 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:08:28,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 53853 backedges. 18564 proven. 703 refuted. 0 times theorem prover too weak. 34586 trivial. 0 not checked. [2024-11-22 02:08:28,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 53853 backedges. 1055 proven. 6634 refuted. 0 times theorem prover too weak. 46164 trivial. 0 not checked. [2024-11-22 02:08:32,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143421554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:32,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:32,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 26 [2024-11-22 02:08:32,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956182350] [2024-11-22 02:08:32,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:32,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 02:08:32,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:32,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 02:08:32,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:08:32,503 INFO L87 Difference]: Start difference. First operand 149 states and 285 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 19 states have call successors, (26), 2 states have call predecessors, (26), 11 states have return successors, (33), 13 states have call predecessors, (33), 19 states have call successors, (33) [2024-11-22 02:08:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:32,870 INFO L93 Difference]: Finished difference Result 238 states and 499 transitions. [2024-11-22 02:08:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 02:08:32,870 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 19 states have call successors, (26), 2 states have call predecessors, (26), 11 states have return successors, (33), 13 states have call predecessors, (33), 19 states have call successors, (33) Word has length 949 [2024-11-22 02:08:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:32,873 INFO L225 Difference]: With dead ends: 238 [2024-11-22 02:08:32,873 INFO L226 Difference]: Without dead ends: 92 [2024-11-22 02:08:32,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1937 GetRequests, 1883 SyntacticMatches, 10 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=546, Invalid=1524, Unknown=0, NotChecked=0, Total=2070 [2024-11-22 02:08:32,876 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 85 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:32,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 135 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:08:32,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-22 02:08:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2024-11-22 02:08:32,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 56 states have internal predecessors, (62), 14 states have call successors, (14), 11 states have call predecessors, (14), 9 states have return successors, (34), 15 states have call predecessors, (34), 14 states have call successors, (34) [2024-11-22 02:08:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 110 transitions. [2024-11-22 02:08:32,887 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 110 transitions. Word has length 949 [2024-11-22 02:08:32,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:32,888 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 110 transitions. [2024-11-22 02:08:32,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 19 states have call successors, (26), 2 states have call predecessors, (26), 11 states have return successors, (33), 13 states have call predecessors, (33), 19 states have call successors, (33) [2024-11-22 02:08:32,888 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 110 transitions. [2024-11-22 02:08:32,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-11-22 02:08:32,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:32,891 INFO L215 NwaCegarLoop]: trace histogram [87, 87, 70, 43, 43, 43, 43, 43, 43, 43, 27, 17, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:32,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 02:08:33,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 02:08:33,092 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:33,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1047497367, now seen corresponding path program 11 times [2024-11-22 02:08:33,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:33,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989340492] [2024-11-22 02:08:33,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:08:33,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:33,281 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2024-11-22 02:08:33,282 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 20991 backedges. 1551 proven. 3366 refuted. 0 times theorem prover too weak. 16074 trivial. 0 not checked. [2024-11-22 02:08:34,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989340492] [2024-11-22 02:08:34,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989340492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666638350] [2024-11-22 02:08:34,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:08:34,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:34,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:34,092 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:34,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 02:08:34,418 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2024-11-22 02:08:34,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:34,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 02:08:34,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 20991 backedges. 11546 proven. 1327 refuted. 0 times theorem prover too weak. 8118 trivial. 0 not checked. [2024-11-22 02:08:34,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20991 backedges. 1623 proven. 3612 refuted. 0 times theorem prover too weak. 15756 trivial. 0 not checked. [2024-11-22 02:08:37,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666638350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:37,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:37,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 25] total 32 [2024-11-22 02:08:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992586058] [2024-11-22 02:08:37,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:37,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 02:08:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 02:08:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:08:37,831 INFO L87 Difference]: Start difference. First operand 83 states and 110 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 25 states have call successors, (32), 2 states have call predecessors, (32), 13 states have return successors, (41), 16 states have call predecessors, (41), 25 states have call successors, (41) [2024-11-22 02:08:38,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:38,435 INFO L93 Difference]: Finished difference Result 207 states and 318 transitions. [2024-11-22 02:08:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-22 02:08:38,436 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 25 states have call successors, (32), 2 states have call predecessors, (32), 13 states have return successors, (41), 16 states have call predecessors, (41), 25 states have call successors, (41) Word has length 596 [2024-11-22 02:08:38,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:38,438 INFO L225 Difference]: With dead ends: 207 [2024-11-22 02:08:38,438 INFO L226 Difference]: Without dead ends: 116 [2024-11-22 02:08:38,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1174 SyntacticMatches, 12 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=943, Invalid=2839, Unknown=0, NotChecked=0, Total=3782 [2024-11-22 02:08:38,440 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 161 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:38,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 182 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:08:38,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-22 02:08:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 95. [2024-11-22 02:08:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 65 states have internal predecessors, (71), 17 states have call successors, (17), 14 states have call predecessors, (17), 9 states have return successors, (43), 15 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-22 02:08:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 131 transitions. [2024-11-22 02:08:38,450 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 131 transitions. Word has length 596 [2024-11-22 02:08:38,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:38,450 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 131 transitions. [2024-11-22 02:08:38,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 25 states have call successors, (32), 2 states have call predecessors, (32), 13 states have return successors, (41), 16 states have call predecessors, (41), 25 states have call successors, (41) [2024-11-22 02:08:38,451 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 131 transitions. [2024-11-22 02:08:38,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-22 02:08:38,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:38,453 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 62, 38, 38, 38, 38, 38, 38, 38, 24, 15, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:38,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-22 02:08:38,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 02:08:38,654 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:38,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:38,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1042599522, now seen corresponding path program 12 times [2024-11-22 02:08:38,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:38,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335422400] [2024-11-22 02:08:38,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:08:38,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:38,693 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:08:38,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 16407 backedges. 561 proven. 2180 refuted. 0 times theorem prover too weak. 13666 trivial. 0 not checked. [2024-11-22 02:08:39,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335422400] [2024-11-22 02:08:39,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335422400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952651691] [2024-11-22 02:08:39,072 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:08:39,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:39,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:39,076 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:39,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 02:08:39,304 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:08:39,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:39,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:08:39,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 16407 backedges. 533 proven. 2177 refuted. 0 times theorem prover too weak. 13697 trivial. 0 not checked. [2024-11-22 02:08:39,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16407 backedges. 537 proven. 2230 refuted. 0 times theorem prover too weak. 13640 trivial. 0 not checked. [2024-11-22 02:08:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952651691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:41,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:41,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 17] total 27 [2024-11-22 02:08:41,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397430157] [2024-11-22 02:08:41,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:41,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 02:08:41,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:41,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 02:08:41,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:08:41,472 INFO L87 Difference]: Start difference. First operand 95 states and 131 transitions. Second operand has 27 states, 23 states have (on average 3.0) internal successors, (69), 27 states have internal predecessors, (69), 19 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 19 states have call successors, (27) [2024-11-22 02:08:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:41,841 INFO L93 Difference]: Finished difference Result 247 states and 376 transitions. [2024-11-22 02:08:41,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 02:08:41,842 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 3.0) internal successors, (69), 27 states have internal predecessors, (69), 19 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 19 states have call successors, (27) Word has length 528 [2024-11-22 02:08:41,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:41,844 INFO L225 Difference]: With dead ends: 247 [2024-11-22 02:08:41,845 INFO L226 Difference]: Without dead ends: 144 [2024-11-22 02:08:41,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1044 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=617, Invalid=1363, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 02:08:41,846 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 100 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:41,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 96 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:08:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-22 02:08:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2024-11-22 02:08:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 81 states have internal predecessors, (89), 21 states have call successors, (21), 18 states have call predecessors, (21), 11 states have return successors, (63), 18 states have call predecessors, (63), 21 states have call successors, (63) [2024-11-22 02:08:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 173 transitions. [2024-11-22 02:08:41,857 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 173 transitions. Word has length 528 [2024-11-22 02:08:41,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:41,858 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 173 transitions. [2024-11-22 02:08:41,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 3.0) internal successors, (69), 27 states have internal predecessors, (69), 19 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 19 states have call successors, (27) [2024-11-22 02:08:41,858 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 173 transitions. [2024-11-22 02:08:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2024-11-22 02:08:41,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:41,862 INFO L215 NwaCegarLoop]: trace histogram [103, 103, 83, 51, 51, 51, 51, 51, 51, 51, 32, 20, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:41,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 02:08:42,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 02:08:42,063 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:42,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2079130241, now seen corresponding path program 13 times [2024-11-22 02:08:42,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:42,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026095102] [2024-11-22 02:08:42,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:08:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:43,196 INFO L134 CoverageAnalysis]: Checked inductivity of 29515 backedges. 2549 proven. 3559 refuted. 0 times theorem prover too weak. 23407 trivial. 0 not checked. [2024-11-22 02:08:43,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:43,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026095102] [2024-11-22 02:08:43,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026095102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:43,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246327607] [2024-11-22 02:08:43,197 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:08:43,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:43,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:43,218 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:43,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 02:08:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:08:43,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 02:08:43,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 29515 backedges. 644 proven. 4092 refuted. 0 times theorem prover too weak. 24779 trivial. 0 not checked. [2024-11-22 02:08:43,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 29515 backedges. 644 proven. 4192 refuted. 0 times theorem prover too weak. 24679 trivial. 0 not checked. [2024-11-22 02:08:47,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246327607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:47,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 21] total 35 [2024-11-22 02:08:47,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700662760] [2024-11-22 02:08:47,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:47,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 02:08:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 02:08:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 02:08:47,356 INFO L87 Difference]: Start difference. First operand 118 states and 173 transitions. Second operand has 35 states, 33 states have (on average 3.090909090909091) internal successors, (102), 35 states have internal predecessors, (102), 29 states have call successors, (33), 1 states have call predecessors, (33), 18 states have return successors, (48), 20 states have call predecessors, (48), 29 states have call successors, (48) [2024-11-22 02:08:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:47,901 INFO L93 Difference]: Finished difference Result 297 states and 594 transitions. [2024-11-22 02:08:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-22 02:08:47,902 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 3.090909090909091) internal successors, (102), 35 states have internal predecessors, (102), 29 states have call successors, (33), 1 states have call predecessors, (33), 18 states have return successors, (48), 20 states have call predecessors, (48), 29 states have call successors, (48) Word has length 705 [2024-11-22 02:08:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:47,906 INFO L225 Difference]: With dead ends: 297 [2024-11-22 02:08:47,906 INFO L226 Difference]: Without dead ends: 184 [2024-11-22 02:08:47,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1461 GetRequests, 1393 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=840, Invalid=2820, Unknown=0, NotChecked=0, Total=3660 [2024-11-22 02:08:47,909 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 149 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:47,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 263 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:08:47,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-22 02:08:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 124. [2024-11-22 02:08:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 86 states have internal predecessors, (88), 25 states have call successors, (25), 18 states have call predecessors, (25), 11 states have return successors, (73), 19 states have call predecessors, (73), 25 states have call successors, (73) [2024-11-22 02:08:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 186 transitions. [2024-11-22 02:08:47,922 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 186 transitions. Word has length 705 [2024-11-22 02:08:47,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:47,923 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 186 transitions. [2024-11-22 02:08:47,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 3.090909090909091) internal successors, (102), 35 states have internal predecessors, (102), 29 states have call successors, (33), 1 states have call predecessors, (33), 18 states have return successors, (48), 20 states have call predecessors, (48), 29 states have call successors, (48) [2024-11-22 02:08:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 186 transitions. [2024-11-22 02:08:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2024-11-22 02:08:47,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:47,933 INFO L215 NwaCegarLoop]: trace histogram [177, 177, 143, 88, 88, 88, 88, 88, 88, 88, 55, 34, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:47,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 02:08:48,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:48,134 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:48,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:48,134 INFO L85 PathProgramCache]: Analyzing trace with hash 15284780, now seen corresponding path program 14 times [2024-11-22 02:08:48,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:48,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879386162] [2024-11-22 02:08:48,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:08:48,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:48,338 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:08:48,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 87769 backedges. 1164 proven. 8218 refuted. 0 times theorem prover too weak. 78387 trivial. 0 not checked. [2024-11-22 02:08:49,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:49,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879386162] [2024-11-22 02:08:49,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879386162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:49,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289966980] [2024-11-22 02:08:49,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:08:49,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:49,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:49,757 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:49,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 02:08:50,236 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:08:50,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:50,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 02:08:50,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 87769 backedges. 1164 proven. 8218 refuted. 0 times theorem prover too weak. 78387 trivial. 0 not checked. [2024-11-22 02:08:50,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 87769 backedges. 1164 proven. 8344 refuted. 0 times theorem prover too weak. 78261 trivial. 0 not checked. [2024-11-22 02:08:56,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289966980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:56,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:56,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 25 [2024-11-22 02:08:56,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248628348] [2024-11-22 02:08:56,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:56,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 02:08:56,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:56,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 02:08:56,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:08:56,100 INFO L87 Difference]: Start difference. First operand 124 states and 186 transitions. Second operand has 25 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 25 states have internal predecessors, (76), 22 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (31), 11 states have call predecessors, (31), 22 states have call successors, (31) [2024-11-22 02:08:56,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:56,323 INFO L93 Difference]: Finished difference Result 133 states and 209 transitions. [2024-11-22 02:08:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 02:08:56,323 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 25 states have internal predecessors, (76), 22 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (31), 11 states have call predecessors, (31), 22 states have call successors, (31) Word has length 1209 [2024-11-22 02:08:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:56,327 INFO L225 Difference]: With dead ends: 133 [2024-11-22 02:08:56,327 INFO L226 Difference]: Without dead ends: 129 [2024-11-22 02:08:56,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2448 GetRequests, 2406 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=766, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 02:08:56,328 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 156 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:56,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 106 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:08:56,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-22 02:08:56,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-22 02:08:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 90 states have (on average 1.011111111111111) internal successors, (91), 89 states have internal predecessors, (91), 26 states have call successors, (26), 18 states have call predecessors, (26), 12 states have return successors, (85), 21 states have call predecessors, (85), 26 states have call successors, (85) [2024-11-22 02:08:56,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 202 transitions. [2024-11-22 02:08:56,341 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 202 transitions. Word has length 1209 [2024-11-22 02:08:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:56,342 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 202 transitions. [2024-11-22 02:08:56,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 25 states have internal predecessors, (76), 22 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (31), 11 states have call predecessors, (31), 22 states have call successors, (31) [2024-11-22 02:08:56,343 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 202 transitions. [2024-11-22 02:08:56,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2994 [2024-11-22 02:08:56,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:56,386 INFO L215 NwaCegarLoop]: trace histogram [439, 439, 355, 219, 219, 219, 219, 219, 219, 219, 136, 84, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:56,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 02:08:56,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 02:08:56,587 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:56,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:56,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1397959209, now seen corresponding path program 15 times [2024-11-22 02:08:56,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:56,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600293290] [2024-11-22 02:08:56,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:56,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:56,678 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2024-11-22 02:08:56,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 542883 backedges. 2534 proven. 23979 refuted. 0 times theorem prover too weak. 516370 trivial. 0 not checked. [2024-11-22 02:08:57,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:57,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600293290] [2024-11-22 02:08:57,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600293290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:57,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809873954] [2024-11-22 02:08:57,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:57,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:57,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:57,215 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:57,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 02:08:57,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2024-11-22 02:08:57,730 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:57,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 02:08:57,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 542883 backedges. 2534 proven. 23979 refuted. 0 times theorem prover too weak. 516370 trivial. 0 not checked. [2024-11-22 02:08:57,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:09:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 542883 backedges. 2534 proven. 24134 refuted. 0 times theorem prover too weak. 516215 trivial. 0 not checked. [2024-11-22 02:09:09,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809873954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:09:09,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:09:09,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 27 [2024-11-22 02:09:09,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765341693] [2024-11-22 02:09:09,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:09:09,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 02:09:09,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:09:09,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 02:09:09,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:09:09,687 INFO L87 Difference]: Start difference. First operand 129 states and 202 transitions. Second operand has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2024-11-22 02:09:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:09:09,897 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2024-11-22 02:09:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:09:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) Word has length 2993 [2024-11-22 02:09:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:09:09,903 INFO L225 Difference]: With dead ends: 138 [2024-11-22 02:09:09,903 INFO L226 Difference]: Without dead ends: 134 [2024-11-22 02:09:09,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6019 GetRequests, 5973 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=424, Invalid=908, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 02:09:09,905 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 201 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:09:09,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 126 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:09:09,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-22 02:09:09,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-22 02:09:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 93 states have (on average 1.010752688172043) internal successors, (94), 92 states have internal predecessors, (94), 27 states have call successors, (27), 18 states have call predecessors, (27), 13 states have return successors, (99), 23 states have call predecessors, (99), 27 states have call successors, (99) [2024-11-22 02:09:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 220 transitions. [2024-11-22 02:09:09,918 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 220 transitions. Word has length 2993 [2024-11-22 02:09:09,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:09:09,919 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 220 transitions. [2024-11-22 02:09:09,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2024-11-22 02:09:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 220 transitions. [2024-11-22 02:09:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4097 [2024-11-22 02:09:10,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:09:10,073 INFO L215 NwaCegarLoop]: trace histogram [601, 601, 486, 300, 300, 300, 300, 300, 300, 300, 186, 115, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:09:10,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-22 02:09:10,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 02:09:10,274 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:09:10,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:09:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash -955673318, now seen corresponding path program 16 times [2024-11-22 02:09:10,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:09:10,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329554696] [2024-11-22 02:09:10,277 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:10,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:09:11,266 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:11,266 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1018455 backedges. 13125 proven. 51004 refuted. 0 times theorem prover too weak. 954326 trivial. 0 not checked. [2024-11-22 02:09:21,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:09:21,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329554696] [2024-11-22 02:09:21,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329554696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:09:21,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638687098] [2024-11-22 02:09:21,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:09:21,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:09:21,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:09:21,248 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:09:21,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 02:09:22,456 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:09:22,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:09:22,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 7287 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-22 02:09:22,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:09:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1018455 backedges. 505406 proven. 26349 refuted. 0 times theorem prover too weak. 486700 trivial. 0 not checked. [2024-11-22 02:09:22,833 INFO L311 TraceCheckSpWp]: Computing backward predicates...