./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6366e3b98da5ee88513ec6586b547e61d25aed49a53277f23448bdf367b4562 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:24:01,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:24:01,427 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:24:01,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:24:01,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:24:01,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:24:01,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:24:01,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:24:01,466 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:24:01,467 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:24:01,467 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:24:01,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:24:01,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:24:01,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:24:01,469 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:24:01,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:24:01,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:24:01,472 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:24:01,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:24:01,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:24:01,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:24:01,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:24:01,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:24:01,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:24:01,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:24:01,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:24:01,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:24:01,479 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:24:01,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:24:01,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:24:01,480 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:24:01,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:24:01,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:24:01,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:24:01,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:24:01,481 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:24:01,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:24:01,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:24:01,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:24:01,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:24:01,482 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:24:01,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:24:01,483 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6366e3b98da5ee88513ec6586b547e61d25aed49a53277f23448bdf367b4562 [2024-11-18 14:24:01,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:24:01,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:24:01,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:24:01,736 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:24:01,736 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:24:01,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.c [2024-11-18 14:24:03,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:24:03,335 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:24:03,335 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.c [2024-11-18 14:24:03,342 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a43608a2/c4c64b7d88224821948989df769625fb/FLAGf4a828ec5 [2024-11-18 14:24:03,727 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a43608a2/c4c64b7d88224821948989df769625fb [2024-11-18 14:24:03,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:24:03,731 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:24:03,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:24:03,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:24:03,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:24:03,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:24:03" (1/1) ... [2024-11-18 14:24:03,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b92aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:03, skipping insertion in model container [2024-11-18 14:24:03,740 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:24:03" (1/1) ... [2024-11-18 14:24:03,756 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:24:03,958 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.c[949,962] [2024-11-18 14:24:03,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:24:03,975 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:24:03,991 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_10-1.c[949,962] [2024-11-18 14:24:03,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:24:04,009 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:24:04,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04 WrapperNode [2024-11-18 14:24:04,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:24:04,011 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:24:04,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:24:04,012 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:24:04,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,039 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-18 14:24:04,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:24:04,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:24:04,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:24:04,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:24:04,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,085 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,100 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 14:24:04,102 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:24:04,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:24:04,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:24:04,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:24:04,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (1/1) ... [2024-11-18 14:24:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:24:04,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:04,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:24:04,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:24:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:24:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:24:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-18 14:24:04,259 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-18 14:24:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-18 14:24:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-18 14:24:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:24:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:24:04,328 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:24:04,331 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:24:04,459 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-18 14:24:04,459 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:24:04,476 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:24:04,478 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 14:24:04,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:24:04 BoogieIcfgContainer [2024-11-18 14:24:04,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:24:04,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:24:04,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:24:04,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:24:04,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:24:03" (1/3) ... [2024-11-18 14:24:04,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32aa7b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:24:04, skipping insertion in model container [2024-11-18 14:24:04,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:24:04" (2/3) ... [2024-11-18 14:24:04,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32aa7b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:24:04, skipping insertion in model container [2024-11-18 14:24:04,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:24:04" (3/3) ... [2024-11-18 14:24:04,488 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-1.c [2024-11-18 14:24:04,504 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:24:04,505 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:24:04,554 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:24:04,562 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;@2a2acda9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:24:04,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:24:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 14:24:04,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 14:24:04,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:04,573 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:04,574 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:04,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:04,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2024-11-18 14:24:04,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:04,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114553964] [2024-11-18 14:24:04,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:04,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:24:04,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:04,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114553964] [2024-11-18 14:24:04,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114553964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:24:04,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:24:04,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:24:04,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087577940] [2024-11-18 14:24:04,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:24:04,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:24:04,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:24:04,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:24:04,836 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:24:04,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:04,912 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-11-18 14:24:04,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:24:04,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-18 14:24:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:04,922 INFO L225 Difference]: With dead ends: 41 [2024-11-18 14:24:04,922 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 14:24:04,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:24:04,927 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:04,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:24:04,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 14:24:04,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-18 14:24:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-18 14:24:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-18 14:24:04,970 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2024-11-18 14:24:04,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:04,971 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-18 14:24:04,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:24:04,971 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-18 14:24:04,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 14:24:04,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:04,972 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:04,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:24:04,973 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:04,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2024-11-18 14:24:04,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:04,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169626177] [2024-11-18 14:24:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:24:05,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:05,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169626177] [2024-11-18 14:24:05,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169626177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:24:05,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:24:05,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:24:05,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016044661] [2024-11-18 14:24:05,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:24:05,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:24:05,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:24:05,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:24:05,063 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:24:05,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:05,125 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-18 14:24:05,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:24:05,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-18 14:24:05,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:05,128 INFO L225 Difference]: With dead ends: 33 [2024-11-18 14:24:05,129 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 14:24:05,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:24:05,130 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:05,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:24:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 14:24:05,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-18 14:24:05,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-18 14:24:05,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-18 14:24:05,142 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2024-11-18 14:24:05,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:05,143 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-18 14:24:05,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:24:05,143 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-18 14:24:05,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 14:24:05,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:05,144 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:05,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:24:05,145 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:05,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:05,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2024-11-18 14:24:05,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:05,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110494205] [2024-11-18 14:24:05,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:05,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:24:05,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:05,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110494205] [2024-11-18 14:24:05,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110494205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:05,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333552577] [2024-11-18 14:24:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:05,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:05,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:05,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:05,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:24:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:05,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:24:05,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:24:05,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:24:05,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333552577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:05,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:05,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-18 14:24:05,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005159700] [2024-11-18 14:24:05,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:05,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 14:24:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 14:24:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:24:05,750 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-18 14:24:05,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:05,904 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2024-11-18 14:24:05,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:24:05,906 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2024-11-18 14:24:05,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:05,907 INFO L225 Difference]: With dead ends: 55 [2024-11-18 14:24:05,907 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 14:24:05,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:24:05,908 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:05,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 118 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:24:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 14:24:05,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-18 14:24:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-18 14:24:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-18 14:24:05,920 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2024-11-18 14:24:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:05,921 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-18 14:24:05,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-18 14:24:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-18 14:24:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 14:24:05,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:05,923 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:05,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 14:24:06,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:06,128 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:06,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2024-11-18 14:24:06,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:06,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128410638] [2024-11-18 14:24:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:06,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:24:06,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:06,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128410638] [2024-11-18 14:24:06,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128410638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:06,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783511217] [2024-11-18 14:24:06,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:06,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:06,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:06,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:06,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:24:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:06,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:24:06,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:24:06,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:24:06,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783511217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:06,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:06,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-18 14:24:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689712903] [2024-11-18 14:24:06,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:06,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:24:06,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:06,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:24:06,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:24:06,568 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 14:24:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:06,698 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-18 14:24:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:24:06,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2024-11-18 14:24:06,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:06,699 INFO L225 Difference]: With dead ends: 40 [2024-11-18 14:24:06,699 INFO L226 Difference]: Without dead ends: 36 [2024-11-18 14:24:06,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:24:06,700 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:06,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:24:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-18 14:24:06,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-18 14:24:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-18 14:24:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-18 14:24:06,717 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2024-11-18 14:24:06,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:06,717 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-18 14:24:06,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 14:24:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-18 14:24:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 14:24:06,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:06,719 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:06,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:24:06,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 14:24:06,920 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:06,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:06,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2024-11-18 14:24:06,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:06,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50495497] [2024-11-18 14:24:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:06,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:24:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50495497] [2024-11-18 14:24:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50495497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767699479] [2024-11-18 14:24:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:07,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:07,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:07,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:07,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:24:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:07,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:24:07,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:24:07,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:24:07,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767699479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:07,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:07,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2024-11-18 14:24:07,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435066172] [2024-11-18 14:24:07,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:07,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 14:24:07,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:07,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 14:24:07,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:24:07,505 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-18 14:24:07,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:07,655 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2024-11-18 14:24:07,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:24:07,656 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2024-11-18 14:24:07,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:07,657 INFO L225 Difference]: With dead ends: 69 [2024-11-18 14:24:07,658 INFO L226 Difference]: Without dead ends: 38 [2024-11-18 14:24:07,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:24:07,659 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:07,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 146 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:24:07,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-18 14:24:07,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-18 14:24:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-18 14:24:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-18 14:24:07,667 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2024-11-18 14:24:07,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:07,667 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-18 14:24:07,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-18 14:24:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-18 14:24:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 14:24:07,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:07,669 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:07,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:24:07,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:07,874 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:07,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:07,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2024-11-18 14:24:07,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:07,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361331188] [2024-11-18 14:24:07,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:07,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:24:08,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:08,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361331188] [2024-11-18 14:24:08,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361331188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:08,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297647214] [2024-11-18 14:24:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:08,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:08,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:08,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:08,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:24:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:08,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:24:08,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:24:08,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:24:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297647214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:08,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:08,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2024-11-18 14:24:08,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499386999] [2024-11-18 14:24:08,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:08,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:24:08,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:24:08,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:24:08,501 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-18 14:24:08,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:08,897 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2024-11-18 14:24:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 14:24:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2024-11-18 14:24:08,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:08,899 INFO L225 Difference]: With dead ends: 101 [2024-11-18 14:24:08,900 INFO L226 Difference]: Without dead ends: 68 [2024-11-18 14:24:08,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:24:08,903 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:08,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 303 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:24:08,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-18 14:24:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-18 14:24:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-18 14:24:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2024-11-18 14:24:08,920 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2024-11-18 14:24:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:08,920 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2024-11-18 14:24:08,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-18 14:24:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2024-11-18 14:24:08,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 14:24:08,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:08,923 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:08,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:24:09,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:09,128 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:09,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:09,128 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2024-11-18 14:24:09,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:09,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944849969] [2024-11-18 14:24:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:09,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 14:24:09,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944849969] [2024-11-18 14:24:09,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944849969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045317715] [2024-11-18 14:24:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:09,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:09,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:09,268 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:09,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:24:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:09,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:24:09,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:24:09,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:24:09,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045317715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:09,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:09,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2024-11-18 14:24:09,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942672208] [2024-11-18 14:24:09,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:09,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:24:09,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:09,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:24:09,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:24:09,907 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-18 14:24:10,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:10,092 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2024-11-18 14:24:10,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:24:10,092 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) Word has length 51 [2024-11-18 14:24:10,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:10,096 INFO L225 Difference]: With dead ends: 102 [2024-11-18 14:24:10,098 INFO L226 Difference]: Without dead ends: 98 [2024-11-18 14:24:10,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:24:10,100 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:10,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 164 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:24:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-18 14:24:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2024-11-18 14:24:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.15) internal successors, (46), 44 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 11 states have return successors, (48), 16 states have call predecessors, (48), 12 states have call successors, (48) [2024-11-18 14:24:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2024-11-18 14:24:10,129 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2024-11-18 14:24:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:10,130 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2024-11-18 14:24:10,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-18 14:24:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2024-11-18 14:24:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 14:24:10,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:10,134 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:10,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:24:10,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:10,335 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:10,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:10,336 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2024-11-18 14:24:10,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:10,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772388037] [2024-11-18 14:24:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:10,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:10,526 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-18 14:24:10,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:10,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772388037] [2024-11-18 14:24:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772388037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:10,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992559943] [2024-11-18 14:24:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:24:10,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:10,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:10,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:10,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:24:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:10,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:24:10,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-18 14:24:10,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 102 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 14:24:11,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992559943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:11,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:11,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-11-18 14:24:11,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033567294] [2024-11-18 14:24:11,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:11,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:24:11,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:11,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:24:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:24:11,537 INFO L87 Difference]: Start difference. First operand 64 states and 106 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-18 14:24:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:12,103 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2024-11-18 14:24:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-18 14:24:12,104 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) Word has length 93 [2024-11-18 14:24:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:12,106 INFO L225 Difference]: With dead ends: 177 [2024-11-18 14:24:12,107 INFO L226 Difference]: Without dead ends: 104 [2024-11-18 14:24:12,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 14:24:12,110 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 96 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:12,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 325 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:24:12,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-18 14:24:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2024-11-18 14:24:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 16 states have call successors, (16), 8 states have call predecessors, (16), 14 states have return successors, (43), 20 states have call predecessors, (43), 16 states have call successors, (43) [2024-11-18 14:24:12,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2024-11-18 14:24:12,141 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 93 [2024-11-18 14:24:12,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:12,141 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2024-11-18 14:24:12,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-18 14:24:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2024-11-18 14:24:12,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 14:24:12,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:12,153 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:12,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:24:12,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:12,354 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:12,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:12,355 INFO L85 PathProgramCache]: Analyzing trace with hash 437944761, now seen corresponding path program 2 times [2024-11-18 14:24:12,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:12,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268022525] [2024-11-18 14:24:12,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:24:12,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:12,381 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:24:12,381 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 43 proven. 179 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2024-11-18 14:24:12,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:12,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268022525] [2024-11-18 14:24:12,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268022525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:12,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552539336] [2024-11-18 14:24:12,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:24:12,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:12,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:12,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:12,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:24:12,700 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:24:12,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:12,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:24:12,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 244 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-11-18 14:24:12,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-18 14:24:14,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552539336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:14,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:14,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 23 [2024-11-18 14:24:14,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749776697] [2024-11-18 14:24:14,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:14,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:24:14,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:14,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:24:14,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:24:14,070 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-18 14:24:14,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:14,325 INFO L93 Difference]: Finished difference Result 132 states and 227 transitions. [2024-11-18 14:24:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 14:24:14,325 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 159 [2024-11-18 14:24:14,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:14,328 INFO L225 Difference]: With dead ends: 132 [2024-11-18 14:24:14,328 INFO L226 Difference]: Without dead ends: 128 [2024-11-18 14:24:14,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 302 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2024-11-18 14:24:14,329 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:14,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 196 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:24:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-18 14:24:14,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2024-11-18 14:24:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 79 states have internal predecessors, (88), 21 states have call successors, (21), 8 states have call predecessors, (21), 19 states have return successors, (85), 30 states have call predecessors, (85), 21 states have call successors, (85) [2024-11-18 14:24:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 194 transitions. [2024-11-18 14:24:14,364 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 194 transitions. Word has length 159 [2024-11-18 14:24:14,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:14,364 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 194 transitions. [2024-11-18 14:24:14,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-18 14:24:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 194 transitions. [2024-11-18 14:24:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-18 14:24:14,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:14,369 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 18, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:14,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 14:24:14,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:14,574 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:14,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:14,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1279109938, now seen corresponding path program 2 times [2024-11-18 14:24:14,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:14,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514630502] [2024-11-18 14:24:14,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:24:14,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:14,627 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:24:14,627 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 158 proven. 490 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-18 14:24:15,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:15,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514630502] [2024-11-18 14:24:15,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514630502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:15,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398670008] [2024-11-18 14:24:15,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:24:15,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:15,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:15,048 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:15,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:24:15,186 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:24:15,186 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:15,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 14:24:15,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 569 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2024-11-18 14:24:15,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 593 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-11-18 14:24:17,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398670008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:17,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:17,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 29 [2024-11-18 14:24:17,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443318626] [2024-11-18 14:24:17,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:17,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 14:24:17,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:17,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 14:24:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2024-11-18 14:24:17,186 INFO L87 Difference]: Start difference. First operand 118 states and 194 transitions. Second operand has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) [2024-11-18 14:24:17,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:17,944 INFO L93 Difference]: Finished difference Result 323 states and 666 transitions. [2024-11-18 14:24:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 14:24:17,945 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) Word has length 284 [2024-11-18 14:24:17,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:17,948 INFO L225 Difference]: With dead ends: 323 [2024-11-18 14:24:17,948 INFO L226 Difference]: Without dead ends: 214 [2024-11-18 14:24:17,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 547 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=2413, Unknown=0, NotChecked=0, Total=2862 [2024-11-18 14:24:17,951 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 158 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:17,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 449 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:24:17,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-18 14:24:17,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 184. [2024-11-18 14:24:17,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 123 states have internal predecessors, (146), 35 states have call successors, (35), 17 states have call predecessors, (35), 25 states have return successors, (120), 43 states have call predecessors, (120), 35 states have call successors, (120) [2024-11-18 14:24:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2024-11-18 14:24:17,986 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 284 [2024-11-18 14:24:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:17,987 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2024-11-18 14:24:17,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 29 states have internal predecessors, (95), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (37), 13 states have call predecessors, (37), 24 states have call successors, (37) [2024-11-18 14:24:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2024-11-18 14:24:17,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-18 14:24:17,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:17,995 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 25, 25, 24, 19, 16, 16, 16, 16, 16, 16, 16, 12, 12, 12, 12, 12, 12, 12, 12, 8, 6, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:18,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 14:24:18,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 14:24:18,200 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:18,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:18,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1695767594, now seen corresponding path program 3 times [2024-11-18 14:24:18,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:18,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762295953] [2024-11-18 14:24:18,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:24:18,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:18,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 14:24:18,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 515 proven. 4 refuted. 0 times theorem prover too weak. 3856 trivial. 0 not checked. [2024-11-18 14:24:18,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:18,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762295953] [2024-11-18 14:24:18,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762295953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:18,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837569054] [2024-11-18 14:24:18,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:24:18,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:18,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:18,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:18,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:24:18,473 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 14:24:18,473 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:18,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:24:18,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 760 proven. 6 refuted. 0 times theorem prover too weak. 3609 trivial. 0 not checked. [2024-11-18 14:24:18,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4375 backedges. 619 proven. 12 refuted. 0 times theorem prover too weak. 3744 trivial. 0 not checked. [2024-11-18 14:24:19,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837569054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:19,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:19,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-18 14:24:19,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179221055] [2024-11-18 14:24:19,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:19,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 14:24:19,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:19,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 14:24:19,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:24:19,554 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-18 14:24:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:19,698 INFO L93 Difference]: Finished difference Result 360 states and 621 transitions. [2024-11-18 14:24:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:24:19,699 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) Word has length 389 [2024-11-18 14:24:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:19,701 INFO L225 Difference]: With dead ends: 360 [2024-11-18 14:24:19,702 INFO L226 Difference]: Without dead ends: 181 [2024-11-18 14:24:19,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 767 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:24:19,705 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:19,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 152 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:24:19,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-18 14:24:19,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2024-11-18 14:24:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 116 states have internal predecessors, (138), 33 states have call successors, (33), 18 states have call predecessors, (33), 22 states have return successors, (95), 39 states have call predecessors, (95), 33 states have call successors, (95) [2024-11-18 14:24:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 266 transitions. [2024-11-18 14:24:19,727 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 266 transitions. Word has length 389 [2024-11-18 14:24:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:19,728 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 266 transitions. [2024-11-18 14:24:19,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (17), 5 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-18 14:24:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 266 transitions. [2024-11-18 14:24:19,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-18 14:24:19,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:19,738 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 29, 29, 28, 27, 19, 19, 19, 19, 19, 19, 19, 14, 14, 14, 14, 14, 14, 14, 14, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:19,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 14:24:19,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:19,939 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:19,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1299493047, now seen corresponding path program 4 times [2024-11-18 14:24:19,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:19,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764543264] [2024-11-18 14:24:19,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:24:19,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:20,023 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:24:20,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 171 proven. 837 refuted. 0 times theorem prover too weak. 5205 trivial. 0 not checked. [2024-11-18 14:24:20,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764543264] [2024-11-18 14:24:20,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764543264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833371770] [2024-11-18 14:24:20,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:24:20,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:20,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:20,416 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:20,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:24:20,630 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:24:20,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:20,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 14:24:20,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 137 proven. 1182 refuted. 0 times theorem prover too weak. 4894 trivial. 0 not checked. [2024-11-18 14:24:20,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6213 backedges. 137 proven. 1215 refuted. 0 times theorem prover too weak. 4861 trivial. 0 not checked. [2024-11-18 14:24:23,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833371770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:23,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:23,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 19] total 27 [2024-11-18 14:24:23,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782984892] [2024-11-18 14:24:23,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:23,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 14:24:23,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:23,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 14:24:23,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:24:23,752 INFO L87 Difference]: Start difference. First operand 174 states and 266 transitions. Second operand has 27 states, 25 states have (on average 3.6) internal successors, (90), 27 states have internal predecessors, (90), 23 states have call successors, (27), 1 states have call predecessors, (27), 14 states have return successors, (38), 15 states have call predecessors, (38), 23 states have call successors, (38) [2024-11-18 14:24:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:24,078 INFO L93 Difference]: Finished difference Result 215 states and 375 transitions. [2024-11-18 14:24:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:24:24,079 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.6) internal successors, (90), 27 states have internal predecessors, (90), 23 states have call successors, (27), 1 states have call predecessors, (27), 14 states have return successors, (38), 15 states have call predecessors, (38), 23 states have call successors, (38) Word has length 461 [2024-11-18 14:24:24,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:24,084 INFO L225 Difference]: With dead ends: 215 [2024-11-18 14:24:24,084 INFO L226 Difference]: Without dead ends: 211 [2024-11-18 14:24:24,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 902 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=1199, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 14:24:24,086 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 67 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:24,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 238 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:24:24,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-18 14:24:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 201. [2024-11-18 14:24:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 134 states have (on average 1.1492537313432836) internal successors, (154), 132 states have internal predecessors, (154), 39 states have call successors, (39), 18 states have call predecessors, (39), 27 states have return successors, (150), 50 states have call predecessors, (150), 39 states have call successors, (150) [2024-11-18 14:24:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 343 transitions. [2024-11-18 14:24:24,107 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 343 transitions. Word has length 461 [2024-11-18 14:24:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:24,108 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 343 transitions. [2024-11-18 14:24:24,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.6) internal successors, (90), 27 states have internal predecessors, (90), 23 states have call successors, (27), 1 states have call predecessors, (27), 14 states have return successors, (38), 15 states have call predecessors, (38), 23 states have call successors, (38) [2024-11-18 14:24:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 343 transitions. [2024-11-18 14:24:24,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2024-11-18 14:24:24,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:24,118 INFO L215 NwaCegarLoop]: trace histogram [78, 78, 77, 77, 63, 62, 39, 39, 39, 39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 24, 24, 16, 14, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:24,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 14:24:24,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 14:24:24,323 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:24,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1215559467, now seen corresponding path program 5 times [2024-11-18 14:24:24,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:24,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349605240] [2024-11-18 14:24:24,323 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:24:24,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:24,474 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-18 14:24:24,474 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 33336 backedges. 1603 proven. 2350 refuted. 0 times theorem prover too weak. 29383 trivial. 0 not checked. [2024-11-18 14:24:25,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:25,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349605240] [2024-11-18 14:24:25,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349605240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:25,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400268092] [2024-11-18 14:24:25,125 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:24:25,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:25,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:25,129 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:25,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:24:25,421 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-18 14:24:25,421 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:25,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 14:24:25,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 33336 backedges. 18194 proven. 414 refuted. 0 times theorem prover too weak. 14728 trivial. 0 not checked. [2024-11-18 14:24:25,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 33336 backedges. 1685 proven. 2550 refuted. 0 times theorem prover too weak. 29101 trivial. 0 not checked. [2024-11-18 14:24:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400268092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:29,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:29,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 21] total 28 [2024-11-18 14:24:29,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940166288] [2024-11-18 14:24:29,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:29,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 14:24:29,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:29,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 14:24:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:24:29,896 INFO L87 Difference]: Start difference. First operand 201 states and 343 transitions. Second operand has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (38), 13 states have call predecessors, (38), 21 states have call successors, (38) [2024-11-18 14:24:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:30,588 INFO L93 Difference]: Finished difference Result 464 states and 872 transitions. [2024-11-18 14:24:30,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 14:24:30,588 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (38), 13 states have call predecessors, (38), 21 states have call successors, (38) Word has length 1059 [2024-11-18 14:24:30,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:30,593 INFO L225 Difference]: With dead ends: 464 [2024-11-18 14:24:30,594 INFO L226 Difference]: Without dead ends: 255 [2024-11-18 14:24:30,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2157 GetRequests, 2101 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=382, Invalid=1874, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 14:24:30,597 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 57 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:30,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 469 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:24:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-18 14:24:30,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 217. [2024-11-18 14:24:30,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 147 states have (on average 1.1088435374149659) internal successors, (163), 144 states have internal predecessors, (163), 42 states have call successors, (42), 23 states have call predecessors, (42), 27 states have return successors, (140), 49 states have call predecessors, (140), 42 states have call successors, (140) [2024-11-18 14:24:30,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 345 transitions. [2024-11-18 14:24:30,626 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 345 transitions. Word has length 1059 [2024-11-18 14:24:30,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:30,627 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 345 transitions. [2024-11-18 14:24:30,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 21 states have call successors, (32), 2 states have call predecessors, (32), 11 states have return successors, (38), 13 states have call predecessors, (38), 21 states have call successors, (38) [2024-11-18 14:24:30,628 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 345 transitions. [2024-11-18 14:24:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2024-11-18 14:24:30,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:30,638 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 61, 61, 50, 49, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 19, 19, 13, 11, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:30,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 14:24:30,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 14:24:30,839 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:30,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1472783967, now seen corresponding path program 6 times [2024-11-18 14:24:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:30,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377491955] [2024-11-18 14:24:30,840 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:24:30,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:30,884 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 14:24:30,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 20885 backedges. 1858 proven. 86 refuted. 0 times theorem prover too weak. 18941 trivial. 0 not checked. [2024-11-18 14:24:31,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:31,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377491955] [2024-11-18 14:24:31,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377491955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:31,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826831515] [2024-11-18 14:24:31,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:24:31,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:31,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:31,317 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:31,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:24:31,570 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 14:24:31,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:31,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:24:31,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 20885 backedges. 3620 proven. 34 refuted. 0 times theorem prover too weak. 17231 trivial. 0 not checked. [2024-11-18 14:24:31,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20885 backedges. 2057 proven. 104 refuted. 0 times theorem prover too weak. 18724 trivial. 0 not checked. [2024-11-18 14:24:34,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826831515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:34,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:34,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 24 [2024-11-18 14:24:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809288237] [2024-11-18 14:24:34,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:34,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 14:24:34,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:34,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 14:24:34,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:24:34,072 INFO L87 Difference]: Start difference. First operand 217 states and 345 transitions. Second operand has 24 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 13 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (28), 9 states have call predecessors, (28), 13 states have call successors, (28) [2024-11-18 14:24:34,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:34,331 INFO L93 Difference]: Finished difference Result 434 states and 724 transitions. [2024-11-18 14:24:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 14:24:34,332 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 13 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (28), 9 states have call predecessors, (28), 13 states have call successors, (28) Word has length 841 [2024-11-18 14:24:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:34,335 INFO L225 Difference]: With dead ends: 434 [2024-11-18 14:24:34,336 INFO L226 Difference]: Without dead ends: 224 [2024-11-18 14:24:34,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1701 GetRequests, 1667 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2024-11-18 14:24:34,338 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:34,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 241 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:24:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-18 14:24:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2024-11-18 14:24:34,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 145 states have (on average 1.110344827586207) internal successors, (161), 142 states have internal predecessors, (161), 42 states have call successors, (42), 23 states have call predecessors, (42), 26 states have return successors, (132), 48 states have call predecessors, (132), 42 states have call successors, (132) [2024-11-18 14:24:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 335 transitions. [2024-11-18 14:24:34,357 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 335 transitions. Word has length 841 [2024-11-18 14:24:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:34,358 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 335 transitions. [2024-11-18 14:24:34,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 13 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (28), 9 states have call predecessors, (28), 13 states have call successors, (28) [2024-11-18 14:24:34,358 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 335 transitions. [2024-11-18 14:24:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2024-11-18 14:24:34,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:34,365 INFO L215 NwaCegarLoop]: trace histogram [74, 74, 71, 71, 59, 58, 37, 37, 37, 37, 37, 37, 37, 35, 35, 35, 35, 35, 35, 35, 23, 22, 16, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:34,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:24:34,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 14:24:34,566 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:34,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:34,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1080305258, now seen corresponding path program 7 times [2024-11-18 14:24:34,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:34,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61845142] [2024-11-18 14:24:34,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:24:34,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 29152 backedges. 453 proven. 2955 refuted. 0 times theorem prover too weak. 25744 trivial. 0 not checked. [2024-11-18 14:24:36,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:36,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61845142] [2024-11-18 14:24:36,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61845142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:36,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616722403] [2024-11-18 14:24:36,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:24:36,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:36,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:36,072 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:36,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:24:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:36,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 14:24:36,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 29152 backedges. 453 proven. 2955 refuted. 0 times theorem prover too weak. 25744 trivial. 0 not checked. [2024-11-18 14:24:36,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 29152 backedges. 453 proven. 2999 refuted. 0 times theorem prover too weak. 25700 trivial. 0 not checked. [2024-11-18 14:24:41,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616722403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:41,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:41,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 21] total 23 [2024-11-18 14:24:41,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569930653] [2024-11-18 14:24:41,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:41,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:24:41,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:41,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:24:41,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:24:41,064 INFO L87 Difference]: Start difference. First operand 214 states and 335 transitions. Second operand has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 23 states have internal predecessors, (80), 20 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (29), 10 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-18 14:24:41,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:41,301 INFO L93 Difference]: Finished difference Result 249 states and 416 transitions. [2024-11-18 14:24:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:24:41,301 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 23 states have internal predecessors, (80), 20 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (29), 10 states have call predecessors, (29), 20 states have call successors, (29) Word has length 991 [2024-11-18 14:24:41,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:41,306 INFO L225 Difference]: With dead ends: 249 [2024-11-18 14:24:41,306 INFO L226 Difference]: Without dead ends: 245 [2024-11-18 14:24:41,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2009 GetRequests, 1970 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2024-11-18 14:24:41,308 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:41,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 226 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:24:41,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-18 14:24:41,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 222. [2024-11-18 14:24:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 150 states have (on average 1.1066666666666667) internal successors, (166), 147 states have internal predecessors, (166), 43 states have call successors, (43), 23 states have call predecessors, (43), 28 states have return successors, (138), 51 states have call predecessors, (138), 43 states have call successors, (138) [2024-11-18 14:24:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 347 transitions. [2024-11-18 14:24:41,329 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 347 transitions. Word has length 991 [2024-11-18 14:24:41,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:41,330 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 347 transitions. [2024-11-18 14:24:41,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 23 states have internal predecessors, (80), 20 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (29), 10 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-18 14:24:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 347 transitions. [2024-11-18 14:24:41,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2024-11-18 14:24:41,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:41,337 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 61, 61, 52, 51, 33, 33, 33, 33, 33, 33, 33, 30, 30, 30, 30, 30, 30, 30, 22, 18, 14, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:41,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 14:24:41,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 14:24:41,538 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:41,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:41,539 INFO L85 PathProgramCache]: Analyzing trace with hash 769037241, now seen corresponding path program 8 times [2024-11-18 14:24:41,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:41,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625684608] [2024-11-18 14:24:41,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:24:41,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:41,652 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:24:41,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 22353 backedges. 466 proven. 2181 refuted. 0 times theorem prover too weak. 19706 trivial. 0 not checked. [2024-11-18 14:24:42,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:42,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625684608] [2024-11-18 14:24:42,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625684608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:42,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102147019] [2024-11-18 14:24:42,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:24:42,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:42,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:42,538 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:42,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:24:42,981 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:24:42,981 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:42,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 14:24:43,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 22353 backedges. 466 proven. 2181 refuted. 0 times theorem prover too weak. 19706 trivial. 0 not checked. [2024-11-18 14:24:43,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22353 backedges. 466 proven. 2214 refuted. 0 times theorem prover too weak. 19673 trivial. 0 not checked. [2024-11-18 14:24:46,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102147019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:46,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:46,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 19] total 21 [2024-11-18 14:24:46,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3495943] [2024-11-18 14:24:46,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:46,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 14:24:46,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 14:24:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-18 14:24:46,553 INFO L87 Difference]: Start difference. First operand 222 states and 347 transitions. Second operand has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-18 14:24:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:46,734 INFO L93 Difference]: Finished difference Result 259 states and 454 transitions. [2024-11-18 14:24:46,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 14:24:46,734 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) Word has length 869 [2024-11-18 14:24:46,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:46,739 INFO L225 Difference]: With dead ends: 259 [2024-11-18 14:24:46,739 INFO L226 Difference]: Without dead ends: 255 [2024-11-18 14:24:46,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1762 GetRequests, 1727 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:24:46,740 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:46,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 174 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:24:46,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-18 14:24:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 232. [2024-11-18 14:24:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 156 states have (on average 1.1025641025641026) internal successors, (172), 153 states have internal predecessors, (172), 45 states have call successors, (45), 23 states have call predecessors, (45), 30 states have return successors, (160), 55 states have call predecessors, (160), 45 states have call successors, (160) [2024-11-18 14:24:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 377 transitions. [2024-11-18 14:24:46,768 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 377 transitions. Word has length 869 [2024-11-18 14:24:46,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:46,769 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 377 transitions. [2024-11-18 14:24:46,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-18 14:24:46,770 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 377 transitions. [2024-11-18 14:24:46,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2024-11-18 14:24:46,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:46,777 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 65, 65, 56, 56, 36, 36, 36, 36, 36, 36, 36, 32, 32, 32, 32, 32, 32, 32, 24, 20, 16, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:46,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 14:24:46,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:46,982 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:46,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:46,983 INFO L85 PathProgramCache]: Analyzing trace with hash 875200504, now seen corresponding path program 9 times [2024-11-18 14:24:46,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:46,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757908435] [2024-11-18 14:24:46,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:24:46,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:47,019 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 14:24:47,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 26128 backedges. 1933 proven. 94 refuted. 0 times theorem prover too weak. 24101 trivial. 0 not checked. [2024-11-18 14:24:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:47,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757908435] [2024-11-18 14:24:47,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757908435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:47,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006337181] [2024-11-18 14:24:47,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:24:47,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:47,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:47,130 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:47,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:24:47,448 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 14:24:47,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:47,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:24:47,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 26128 backedges. 4877 proven. 19 refuted. 0 times theorem prover too weak. 21232 trivial. 0 not checked. [2024-11-18 14:24:47,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 26128 backedges. 2164 proven. 121 refuted. 0 times theorem prover too weak. 23843 trivial. 0 not checked. [2024-11-18 14:24:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006337181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:49,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:49,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 18 [2024-11-18 14:24:49,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073128560] [2024-11-18 14:24:49,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:49,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:24:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:24:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:24:49,975 INFO L87 Difference]: Start difference. First operand 232 states and 377 transitions. Second operand has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 11 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (26), 6 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-18 14:24:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:50,097 INFO L93 Difference]: Finished difference Result 428 states and 768 transitions. [2024-11-18 14:24:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:24:50,098 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 11 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (26), 6 states have call predecessors, (26), 11 states have call successors, (26) Word has length 938 [2024-11-18 14:24:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:50,100 INFO L225 Difference]: With dead ends: 428 [2024-11-18 14:24:50,101 INFO L226 Difference]: Without dead ends: 182 [2024-11-18 14:24:50,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1890 GetRequests, 1864 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:24:50,103 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:50,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 157 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:24:50,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-18 14:24:50,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-18 14:24:50,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 126 states have (on average 1.0952380952380953) internal successors, (138), 123 states have internal predecessors, (138), 33 states have call successors, (33), 22 states have call predecessors, (33), 22 states have return successors, (107), 36 states have call predecessors, (107), 33 states have call successors, (107) [2024-11-18 14:24:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 278 transitions. [2024-11-18 14:24:50,119 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 278 transitions. Word has length 938 [2024-11-18 14:24:50,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:50,120 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 278 transitions. [2024-11-18 14:24:50,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 11 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (26), 6 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-18 14:24:50,120 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 278 transitions. [2024-11-18 14:24:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1719 [2024-11-18 14:24:50,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:50,138 INFO L215 NwaCegarLoop]: trace histogram [132, 132, 119, 119, 106, 102, 66, 66, 66, 66, 66, 66, 66, 59, 59, 59, 59, 59, 59, 59, 43, 40, 30, 13, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:50,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-18 14:24:50,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 14:24:50,346 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:50,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash 871578463, now seen corresponding path program 10 times [2024-11-18 14:24:50,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:50,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652053025] [2024-11-18 14:24:50,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:24:50,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:50,611 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:24:50,611 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 88808 backedges. 1841 proven. 3590 refuted. 0 times theorem prover too weak. 83377 trivial. 0 not checked. [2024-11-18 14:24:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652053025] [2024-11-18 14:24:52,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652053025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:52,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802088951] [2024-11-18 14:24:52,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:24:52,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:52,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:52,082 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:52,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:24:52,643 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:24:52,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:52,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 14:24:52,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 88808 backedges. 971 proven. 5360 refuted. 0 times theorem prover too weak. 82477 trivial. 0 not checked. [2024-11-18 14:24:52,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 88808 backedges. 983 proven. 5388 refuted. 0 times theorem prover too weak. 82437 trivial. 0 not checked. [2024-11-18 14:24:59,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802088951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:59,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:59,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 21] total 34 [2024-11-18 14:24:59,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100080144] [2024-11-18 14:24:59,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:59,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 14:24:59,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 14:24:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 14:24:59,421 INFO L87 Difference]: Start difference. First operand 182 states and 278 transitions. Second operand has 34 states, 32 states have (on average 3.5625) internal successors, (114), 34 states have internal predecessors, (114), 28 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (48), 23 states have call predecessors, (48), 28 states have call successors, (48) [2024-11-18 14:25:00,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:00,717 INFO L93 Difference]: Finished difference Result 568 states and 1276 transitions. [2024-11-18 14:25:00,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-18 14:25:00,718 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 3.5625) internal successors, (114), 34 states have internal predecessors, (114), 28 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (48), 23 states have call predecessors, (48), 28 states have call successors, (48) Word has length 1718 [2024-11-18 14:25:00,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:00,723 INFO L225 Difference]: With dead ends: 568 [2024-11-18 14:25:00,723 INFO L226 Difference]: Without dead ends: 293 [2024-11-18 14:25:00,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3491 GetRequests, 3411 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=655, Invalid=4457, Unknown=0, NotChecked=0, Total=5112 [2024-11-18 14:25:00,730 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 165 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:00,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 919 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 14:25:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-18 14:25:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 248. [2024-11-18 14:25:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 172 states have (on average 1.0755813953488371) internal successors, (185), 170 states have internal predecessors, (185), 51 states have call successors, (51), 35 states have call predecessors, (51), 24 states have return successors, (131), 42 states have call predecessors, (131), 51 states have call successors, (131) [2024-11-18 14:25:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 367 transitions. [2024-11-18 14:25:00,766 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 367 transitions. Word has length 1718 [2024-11-18 14:25:00,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:00,767 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 367 transitions. [2024-11-18 14:25:00,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 3.5625) internal successors, (114), 34 states have internal predecessors, (114), 28 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (48), 23 states have call predecessors, (48), 28 states have call successors, (48) [2024-11-18 14:25:00,768 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 367 transitions. [2024-11-18 14:25:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2024-11-18 14:25:00,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:00,781 INFO L215 NwaCegarLoop]: trace histogram [71, 71, 66, 66, 64, 54, 35, 35, 35, 35, 35, 35, 35, 33, 33, 33, 33, 33, 33, 33, 31, 19, 12, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:00,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 14:25:00,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 14:25:00,986 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:00,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2106905326, now seen corresponding path program 11 times [2024-11-18 14:25:00,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:00,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422279226] [2024-11-18 14:25:00,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:00,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:01,024 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 14:25:01,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 26459 backedges. 592 proven. 1778 refuted. 0 times theorem prover too weak. 24089 trivial. 0 not checked. [2024-11-18 14:25:01,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:01,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422279226] [2024-11-18 14:25:01,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422279226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:01,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658152825] [2024-11-18 14:25:01,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:01,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:01,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:01,132 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:01,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 14:25:01,499 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 14:25:01,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:01,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:25:01,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 26459 backedges. 5882 proven. 4 refuted. 0 times theorem prover too weak. 20573 trivial. 0 not checked. [2024-11-18 14:25:01,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:03,729 INFO L134 CoverageAnalysis]: Checked inductivity of 26459 backedges. 592 proven. 1778 refuted. 0 times theorem prover too weak. 24089 trivial. 0 not checked. [2024-11-18 14:25:03,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658152825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:03,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:03,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 14 [2024-11-18 14:25:03,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106846161] [2024-11-18 14:25:03,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:03,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 14:25:03,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:03,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 14:25:03,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:25:03,732 INFO L87 Difference]: Start difference. First operand 248 states and 367 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-18 14:25:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:03,899 INFO L93 Difference]: Finished difference Result 483 states and 787 transitions. [2024-11-18 14:25:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:25:03,900 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 944 [2024-11-18 14:25:03,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:03,904 INFO L225 Difference]: With dead ends: 483 [2024-11-18 14:25:03,904 INFO L226 Difference]: Without dead ends: 253 [2024-11-18 14:25:03,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1899 GetRequests, 1880 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:25:03,906 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:03,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 206 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:03,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-18 14:25:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 245. [2024-11-18 14:25:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 170 states have (on average 1.076470588235294) internal successors, (183), 168 states have internal predecessors, (183), 51 states have call successors, (51), 35 states have call predecessors, (51), 23 states have return successors, (126), 41 states have call predecessors, (126), 51 states have call successors, (126) [2024-11-18 14:25:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 360 transitions. [2024-11-18 14:25:03,928 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 360 transitions. Word has length 944 [2024-11-18 14:25:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:03,928 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 360 transitions. [2024-11-18 14:25:03,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-18 14:25:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 360 transitions. [2024-11-18 14:25:03,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1305 [2024-11-18 14:25:03,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:03,940 INFO L215 NwaCegarLoop]: trace histogram [99, 99, 92, 92, 78, 76, 49, 49, 49, 49, 49, 49, 49, 46, 46, 46, 46, 46, 46, 46, 32, 27, 21, 16, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:03,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 14:25:04,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:04,141 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:04,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1099672277, now seen corresponding path program 12 times [2024-11-18 14:25:04,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:04,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382326349] [2024-11-18 14:25:04,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:04,239 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-18 14:25:04,239 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 50845 backedges. 764 proven. 3300 refuted. 0 times theorem prover too weak. 46781 trivial. 0 not checked. [2024-11-18 14:25:04,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:04,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382326349] [2024-11-18 14:25:04,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382326349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:04,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779886863] [2024-11-18 14:25:04,646 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:04,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:04,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:04,648 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:04,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 14:25:05,086 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-18 14:25:05,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:05,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 14:25:05,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 50845 backedges. 758 proven. 3297 refuted. 0 times theorem prover too weak. 46790 trivial. 0 not checked. [2024-11-18 14:25:05,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 50845 backedges. 760 proven. 3328 refuted. 0 times theorem prover too weak. 46757 trivial. 0 not checked. [2024-11-18 14:25:09,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779886863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:09,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:09,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 23 [2024-11-18 14:25:09,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294642908] [2024-11-18 14:25:09,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:09,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:25:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:25:09,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:25:09,667 INFO L87 Difference]: Start difference. First operand 245 states and 360 transitions. Second operand has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 23 states have internal predecessors, (79), 19 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2024-11-18 14:25:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:09,965 INFO L93 Difference]: Finished difference Result 296 states and 455 transitions. [2024-11-18 14:25:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 14:25:09,966 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 23 states have internal predecessors, (79), 19 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) Word has length 1304 [2024-11-18 14:25:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:09,971 INFO L225 Difference]: With dead ends: 296 [2024-11-18 14:25:09,971 INFO L226 Difference]: Without dead ends: 283 [2024-11-18 14:25:09,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2633 GetRequests, 2596 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2024-11-18 14:25:09,973 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 83 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:09,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 206 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:25:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-18 14:25:09,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2024-11-18 14:25:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 180 states have (on average 1.0722222222222222) internal successors, (193), 178 states have internal predecessors, (193), 55 states have call successors, (55), 36 states have call predecessors, (55), 25 states have return successors, (144), 46 states have call predecessors, (144), 55 states have call successors, (144) [2024-11-18 14:25:09,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 392 transitions. [2024-11-18 14:25:10,000 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 392 transitions. Word has length 1304 [2024-11-18 14:25:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:10,000 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 392 transitions. [2024-11-18 14:25:10,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 23 states have internal predecessors, (79), 19 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2024-11-18 14:25:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 392 transitions. [2024-11-18 14:25:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1674 [2024-11-18 14:25:10,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:10,018 INFO L215 NwaCegarLoop]: trace histogram [123, 123, 122, 122, 101, 98, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 40, 37, 24, 22, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:10,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-18 14:25:10,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:10,219 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:10,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2132236978, now seen corresponding path program 13 times [2024-11-18 14:25:10,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:10,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003925592] [2024-11-18 14:25:10,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:25:10,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 83979 backedges. 983 proven. 5183 refuted. 0 times theorem prover too weak. 77813 trivial. 0 not checked. [2024-11-18 14:25:12,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:12,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003925592] [2024-11-18 14:25:12,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003925592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:12,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274443182] [2024-11-18 14:25:12,259 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:25:12,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:12,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:12,261 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:12,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 14:25:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:13,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 3733 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 14:25:13,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 83979 backedges. 1010 proven. 5584 refuted. 0 times theorem prover too weak. 77385 trivial. 0 not checked. [2024-11-18 14:25:13,131 INFO L311 TraceCheckSpWp]: Computing backward predicates...