./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_25x0-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_25x0-1.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 8ec6e434f91e1569e6fad03794f07a751e615694ef413649174052dcc7984987 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 22:12:59,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 22:12:59,695 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 22:12:59,702 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 22:12:59,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 22:12:59,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 22:12:59,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 22:12:59,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 22:12:59,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 22:12:59,726 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 22:12:59,726 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 22:12:59,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 22:12:59,727 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 22:12:59,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 22:12:59,728 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 22:12:59,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 22:12:59,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 22:12:59,729 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 22:12:59,729 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 22:12:59,729 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 22:12:59,730 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 22:12:59,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 22:12:59,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 22:12:59,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 22:12:59,733 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 22:12:59,733 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 22:12:59,734 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 22:12:59,734 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 22:12:59,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 22:12:59,735 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 22:12:59,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 22:12:59,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 22:12:59,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:12:59,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 22:12:59,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 22:12:59,736 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 22:12:59,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 22:12:59,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 22:12:59,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 22:12:59,738 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 22:12:59,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 22:12:59,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 22:12:59,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ec6e434f91e1569e6fad03794f07a751e615694ef413649174052dcc7984987 [2024-11-19 22:12:59,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 22:12:59,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 22:12:59,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 22:12:59,998 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 22:12:59,999 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 22:13:00,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_25x0-1.c [2024-11-19 22:13:01,428 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 22:13:01,605 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 22:13:01,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_25x0-1.c [2024-11-19 22:13:01,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76baf4624/92888b21002c4cd9b9818a2826c568b5/FLAG3aff7d727 [2024-11-19 22:13:02,002 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76baf4624/92888b21002c4cd9b9818a2826c568b5 [2024-11-19 22:13:02,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 22:13:02,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 22:13:02,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 22:13:02,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 22:13:02,013 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 22:13:02,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e92d840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02, skipping insertion in model container [2024-11-19 22:13:02,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,036 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 22:13:02,238 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/sum_25x0-1.c[481,494] [2024-11-19 22:13:02,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:13:02,258 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 22:13:02,269 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/sum_25x0-1.c[481,494] [2024-11-19 22:13:02,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:13:02,286 INFO L204 MainTranslator]: Completed translation [2024-11-19 22:13:02,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02 WrapperNode [2024-11-19 22:13:02,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 22:13:02,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 22:13:02,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 22:13:02,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 22:13:02,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,311 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-11-19 22:13:02,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 22:13:02,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 22:13:02,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 22:13:02,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 22:13:02,318 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,319 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,328 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]. [2024-11-19 22:13:02,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,330 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 22:13:02,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 22:13:02,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 22:13:02,336 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 22:13:02,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (1/1) ... [2024-11-19 22:13:02,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:13:02,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:02,370 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) [2024-11-19 22:13:02,373 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 [2024-11-19 22:13:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 22:13:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 22:13:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 22:13:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-11-19 22:13:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-11-19 22:13:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 22:13:02,478 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 22:13:02,480 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 22:13:02,595 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-19 22:13:02,596 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 22:13:02,604 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 22:13:02,604 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 22:13:02,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:13:02 BoogieIcfgContainer [2024-11-19 22:13:02,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 22:13:02,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 22:13:02,606 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 22:13:02,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 22:13:02,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:13:02" (1/3) ... [2024-11-19 22:13:02,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f946f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:13:02, skipping insertion in model container [2024-11-19 22:13:02,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:13:02" (2/3) ... [2024-11-19 22:13:02,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f946f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:13:02, skipping insertion in model container [2024-11-19 22:13:02,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:13:02" (3/3) ... [2024-11-19 22:13:02,613 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_25x0-1.c [2024-11-19 22:13:02,626 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 22:13:02,627 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 22:13:02,668 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 22:13:02,673 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;@41d5e6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 22:13:02,673 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 22:13:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 22:13:02,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 22:13:02,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:02,683 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:02,684 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:02,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:02,688 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2024-11-19 22:13:02,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:02,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222326633] [2024-11-19 22:13:02,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:02,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:02,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:13:02,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:02,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222326633] [2024-11-19 22:13:02,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222326633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:13:02,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:13:02,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:13:02,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826577660] [2024-11-19 22:13:02,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:13:02,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:13:02,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:03,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:13:03,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:13:03,016 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2024-11-19 22:13:03,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:03,087 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-19 22:13:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:13:03,090 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 [2024-11-19 22:13:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:03,099 INFO L225 Difference]: With dead ends: 25 [2024-11-19 22:13:03,100 INFO L226 Difference]: Without dead ends: 15 [2024-11-19 22:13:03,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:13:03,105 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:03,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:13:03,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-19 22:13:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-19 22:13:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 22:13:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-19 22:13:03,131 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2024-11-19 22:13:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:03,131 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-19 22:13:03,131 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) [2024-11-19 22:13:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-19 22:13:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-19 22:13:03,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:03,132 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:03,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 22:13:03,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:03,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2024-11-19 22:13:03,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:03,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392230047] [2024-11-19 22:13:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:03,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:03,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 22:13:03,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:03,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392230047] [2024-11-19 22:13:03,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392230047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:03,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170260795] [2024-11-19 22:13:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:03,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:03,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:03,347 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) [2024-11-19 22:13:03,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 22:13:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:03,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 22:13:03,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 22:13:03,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 22:13:03,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170260795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:03,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:03,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-11-19 22:13:03,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685655804] [2024-11-19 22:13:03,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:03,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 22:13:03,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 22:13:03,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 22:13:03,710 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 22:13:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:03,768 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-19 22:13:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:13:03,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 16 [2024-11-19 22:13:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:03,770 INFO L225 Difference]: With dead ends: 22 [2024-11-19 22:13:03,770 INFO L226 Difference]: Without dead ends: 18 [2024-11-19 22:13:03,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:13:03,772 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:03,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 37 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:13:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-19 22:13:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-19 22:13:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 22:13:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-19 22:13:03,782 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2024-11-19 22:13:03,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:03,783 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-19 22:13:03,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 22:13:03,783 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-19 22:13:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 22:13:03,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:03,786 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:03,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 22:13:03,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:03,987 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:03,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:03,990 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times [2024-11-19 22:13:03,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:03,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749648886] [2024-11-19 22:13:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:03,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:04,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:04,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:04,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 22:13:04,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:04,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749648886] [2024-11-19 22:13:04,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749648886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:04,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686043974] [2024-11-19 22:13:04,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 22:13:04,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:04,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:04,224 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) [2024-11-19 22:13:04,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 22:13:04,272 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 22:13:04,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:13:04,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 22:13:04,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 22:13:04,318 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 22:13:04,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686043974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:04,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:04,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-11-19 22:13:04,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939634460] [2024-11-19 22:13:04,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:04,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 22:13:04,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 22:13:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-19 22:13:04,671 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-19 22:13:04,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:04,728 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-19 22:13:04,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:13:04,729 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) Word has length 22 [2024-11-19 22:13:04,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:04,730 INFO L225 Difference]: With dead ends: 25 [2024-11-19 22:13:04,730 INFO L226 Difference]: Without dead ends: 21 [2024-11-19 22:13:04,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-19 22:13:04,732 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:04,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:13:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-19 22:13:04,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-19 22:13:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 22:13:04,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-19 22:13:04,738 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2024-11-19 22:13:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:04,738 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-19 22:13:04,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-19 22:13:04,739 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-19 22:13:04,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 22:13:04,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:04,740 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:04,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 22:13:04,943 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,SelfDestructingSolverStorable2 [2024-11-19 22:13:04,944 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:04,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:04,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times [2024-11-19 22:13:04,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:04,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093685150] [2024-11-19 22:13:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:04,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:05,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:05,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:05,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:05,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 22:13:05,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:05,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093685150] [2024-11-19 22:13:05,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093685150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:05,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922863282] [2024-11-19 22:13:05,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 22:13:05,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:05,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:05,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:13:05,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 22:13:05,176 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 22:13:05,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:13:05,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 22:13:05,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 22:13:05,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 22:13:05,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922863282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:05,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:05,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2024-11-19 22:13:05,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573295335] [2024-11-19 22:13:05,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:05,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 22:13:05,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:05,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 22:13:05,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-19 22:13:05,755 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-19 22:13:05,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:05,828 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-19 22:13:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 22:13:05,829 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) Word has length 28 [2024-11-19 22:13:05,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:05,830 INFO L225 Difference]: With dead ends: 28 [2024-11-19 22:13:05,830 INFO L226 Difference]: Without dead ends: 24 [2024-11-19 22:13:05,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-11-19 22:13:05,833 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:05,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:13:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-19 22:13:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-19 22:13:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 22:13:05,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-19 22:13:05,840 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2024-11-19 22:13:05,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:05,840 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-19 22:13:05,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-19 22:13:05,840 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-19 22:13:05,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-19 22:13:05,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:05,841 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:05,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 22:13:06,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:06,042 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:06,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:06,043 INFO L85 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 4 times [2024-11-19 22:13:06,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:06,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37961758] [2024-11-19 22:13:06,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:06,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:06,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:06,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:06,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:06,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:06,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-19 22:13:06,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:06,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37961758] [2024-11-19 22:13:06,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37961758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:06,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512122655] [2024-11-19 22:13:06,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 22:13:06,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:06,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:06,291 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) [2024-11-19 22:13:06,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 22:13:06,346 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 22:13:06,347 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:13:06,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 22:13:06,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-19 22:13:06,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 22:13:07,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512122655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:07,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:07,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-11-19 22:13:07,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32361521] [2024-11-19 22:13:07,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:07,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 22:13:07,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 22:13:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-19 22:13:07,157 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-19 22:13:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:07,237 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-11-19 22:13:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 22:13:07,237 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) Word has length 34 [2024-11-19 22:13:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:07,238 INFO L225 Difference]: With dead ends: 31 [2024-11-19 22:13:07,238 INFO L226 Difference]: Without dead ends: 27 [2024-11-19 22:13:07,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-19 22:13:07,240 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:07,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 60 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:13:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-19 22:13:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-19 22:13:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-19 22:13:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-19 22:13:07,245 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2024-11-19 22:13:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:07,245 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-19 22:13:07,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-19 22:13:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-19 22:13:07,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-19 22:13:07,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:07,246 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:07,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 22:13:07,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:07,447 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:07,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash -886339242, now seen corresponding path program 5 times [2024-11-19 22:13:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:07,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221856324] [2024-11-19 22:13:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:07,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:07,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:07,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:07,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:07,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:07,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:07,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-19 22:13:07,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:07,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221856324] [2024-11-19 22:13:07,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221856324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:07,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462938710] [2024-11-19 22:13:07,700 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 22:13:07,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:07,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:07,702 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) [2024-11-19 22:13:07,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 22:13:07,769 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-19 22:13:07,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:13:07,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 22:13:07,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-19 22:13:07,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 22:13:08,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462938710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:08,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:08,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18 [2024-11-19 22:13:08,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059176951] [2024-11-19 22:13:08,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:08,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 22:13:08,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:08,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 22:13:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-19 22:13:08,848 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-19 22:13:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:08,938 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-11-19 22:13:08,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 22:13:08,938 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) Word has length 40 [2024-11-19 22:13:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:08,939 INFO L225 Difference]: With dead ends: 34 [2024-11-19 22:13:08,939 INFO L226 Difference]: Without dead ends: 30 [2024-11-19 22:13:08,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-11-19 22:13:08,941 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:08,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 82 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:13:08,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-19 22:13:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-19 22:13:08,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-19 22:13:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-11-19 22:13:08,946 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40 [2024-11-19 22:13:08,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:08,946 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-11-19 22:13:08,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-19 22:13:08,947 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-11-19 22:13:08,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 22:13:08,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:08,948 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:08,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 22:13:09,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:09,151 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:09,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:09,152 INFO L85 PathProgramCache]: Analyzing trace with hash -918712436, now seen corresponding path program 6 times [2024-11-19 22:13:09,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:09,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859532317] [2024-11-19 22:13:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:09,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:09,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:09,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:09,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:09,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:09,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:09,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:09,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-19 22:13:09,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:09,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859532317] [2024-11-19 22:13:09,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859532317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:09,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285989773] [2024-11-19 22:13:09,541 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 22:13:09,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:09,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:09,544 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) [2024-11-19 22:13:09,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 22:13:09,622 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-19 22:13:09,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:13:09,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 22:13:09,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-19 22:13:09,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-19 22:13:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285989773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:11,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:11,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20 [2024-11-19 22:13:11,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543191359] [2024-11-19 22:13:11,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:11,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 22:13:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 22:13:11,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-19 22:13:11,082 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-19 22:13:11,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:11,170 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-11-19 22:13:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 22:13:11,171 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) Word has length 46 [2024-11-19 22:13:11,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:11,171 INFO L225 Difference]: With dead ends: 37 [2024-11-19 22:13:11,172 INFO L226 Difference]: Without dead ends: 33 [2024-11-19 22:13:11,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2024-11-19 22:13:11,173 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:11,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 69 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:13:11,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-19 22:13:11,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-19 22:13:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-19 22:13:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-19 22:13:11,178 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 46 [2024-11-19 22:13:11,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:11,178 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-19 22:13:11,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-19 22:13:11,179 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-19 22:13:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-19 22:13:11,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:11,180 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:11,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 22:13:11,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:11,381 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:11,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:11,381 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 7 times [2024-11-19 22:13:11,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:11,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723868319] [2024-11-19 22:13:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:11,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:11,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:11,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:11,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:11,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:11,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:11,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:11,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:11,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-19 22:13:11,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:11,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723868319] [2024-11-19 22:13:11,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723868319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:11,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626250067] [2024-11-19 22:13:11,813 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 22:13:11,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:11,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:11,816 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) [2024-11-19 22:13:11,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 22:13:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:11,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 22:13:11,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-19 22:13:11,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 22:13:13,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626250067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:13,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:13,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22 [2024-11-19 22:13:13,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72632842] [2024-11-19 22:13:13,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:13,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 22:13:13,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:13,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 22:13:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-11-19 22:13:13,746 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2024-11-19 22:13:13,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:13,847 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-11-19 22:13:13,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 22:13:13,848 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) Word has length 52 [2024-11-19 22:13:13,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:13,849 INFO L225 Difference]: With dead ends: 40 [2024-11-19 22:13:13,849 INFO L226 Difference]: Without dead ends: 36 [2024-11-19 22:13:13,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 101 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2024-11-19 22:13:13,852 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:13,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 82 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:13:13,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-19 22:13:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-19 22:13:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-19 22:13:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-19 22:13:13,857 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 52 [2024-11-19 22:13:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:13,858 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-19 22:13:13,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2024-11-19 22:13:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-19 22:13:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-19 22:13:13,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:13,859 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:13,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 22:13:14,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:14,062 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:14,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash -960511412, now seen corresponding path program 8 times [2024-11-19 22:13:14,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:14,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213594178] [2024-11-19 22:13:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:14,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:14,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:14,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:14,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:14,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:14,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:14,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:14,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:14,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:14,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-19 22:13:14,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:14,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213594178] [2024-11-19 22:13:14,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213594178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:14,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252540922] [2024-11-19 22:13:14,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 22:13:14,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:14,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:14,562 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) [2024-11-19 22:13:14,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 22:13:14,690 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 22:13:14,690 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:13:14,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 22:13:14,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-19 22:13:14,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:17,235 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-19 22:13:17,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252540922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:17,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:17,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24 [2024-11-19 22:13:17,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320880878] [2024-11-19 22:13:17,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:17,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 22:13:17,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:17,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 22:13:17,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-11-19 22:13:17,238 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-19 22:13:17,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:17,360 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-11-19 22:13:17,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 22:13:17,361 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) Word has length 58 [2024-11-19 22:13:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:17,362 INFO L225 Difference]: With dead ends: 43 [2024-11-19 22:13:17,362 INFO L226 Difference]: Without dead ends: 39 [2024-11-19 22:13:17,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 113 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-11-19 22:13:17,363 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 68 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:17,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 81 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:13:17,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-19 22:13:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-19 22:13:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-19 22:13:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-11-19 22:13:17,368 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 58 [2024-11-19 22:13:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:17,369 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-11-19 22:13:17,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-19 22:13:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-11-19 22:13:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:13:17,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:17,370 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:17,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 22:13:17,574 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,SelfDestructingSolverStorable8 [2024-11-19 22:13:17,574 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:17,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash -366706730, now seen corresponding path program 9 times [2024-11-19 22:13:17,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:17,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326340861] [2024-11-19 22:13:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:17,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:17,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:17,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:17,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:17,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:17,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:17,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:18,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:18,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:18,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:18,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-19 22:13:18,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326340861] [2024-11-19 22:13:18,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326340861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612650732] [2024-11-19 22:13:18,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 22:13:18,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:18,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:18,121 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) [2024-11-19 22:13:18,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 22:13:18,307 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-19 22:13:18,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:13:18,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 22:13:18,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-19 22:13:18,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 22:13:21,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612650732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:21,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:21,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 26 [2024-11-19 22:13:21,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860614816] [2024-11-19 22:13:21,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:21,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 22:13:21,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 22:13:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-11-19 22:13:21,642 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) [2024-11-19 22:13:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:21,741 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-11-19 22:13:21,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 22:13:21,742 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) Word has length 64 [2024-11-19 22:13:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:21,743 INFO L225 Difference]: With dead ends: 46 [2024-11-19 22:13:21,743 INFO L226 Difference]: Without dead ends: 42 [2024-11-19 22:13:21,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 125 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=812, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 22:13:21,744 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:21,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 91 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:13:21,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-19 22:13:21,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-19 22:13:21,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 22:13:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-19 22:13:21,749 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 64 [2024-11-19 22:13:21,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:21,750 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-19 22:13:21,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) [2024-11-19 22:13:21,750 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-19 22:13:21,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-19 22:13:21,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:21,751 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:21,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 22:13:21,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 22:13:21,955 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:21,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1719425780, now seen corresponding path program 10 times [2024-11-19 22:13:21,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590036389] [2024-11-19 22:13:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-19 22:13:22,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:22,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590036389] [2024-11-19 22:13:22,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590036389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:22,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276046598] [2024-11-19 22:13:22,635 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 22:13:22,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:22,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:22,639 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) [2024-11-19 22:13:22,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 22:13:22,856 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 22:13:22,856 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:13:22,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 22:13:22,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-19 22:13:22,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 22:13:27,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276046598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:27,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:27,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 28 [2024-11-19 22:13:27,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445818275] [2024-11-19 22:13:27,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:27,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 22:13:27,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 22:13:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-11-19 22:13:27,488 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) [2024-11-19 22:13:27,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:27,651 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-11-19 22:13:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 22:13:27,652 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) Word has length 70 [2024-11-19 22:13:27,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:27,653 INFO L225 Difference]: With dead ends: 49 [2024-11-19 22:13:27,653 INFO L226 Difference]: Without dead ends: 45 [2024-11-19 22:13:27,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 137 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=448, Invalid=958, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 22:13:27,654 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 73 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:27,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 107 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:13:27,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-19 22:13:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-19 22:13:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-19 22:13:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-11-19 22:13:27,665 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 70 [2024-11-19 22:13:27,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:27,666 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-11-19 22:13:27,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) [2024-11-19 22:13:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-11-19 22:13:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-19 22:13:27,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:27,671 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:27,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 22:13:27,871 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,SelfDestructingSolverStorable10 [2024-11-19 22:13:27,872 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:27,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1354232598, now seen corresponding path program 11 times [2024-11-19 22:13:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:27,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443574972] [2024-11-19 22:13:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:27,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:27,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-19 22:13:28,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:28,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443574972] [2024-11-19 22:13:28,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443574972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:28,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794340568] [2024-11-19 22:13:28,580 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 22:13:28,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:28,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:28,584 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) [2024-11-19 22:13:28,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 22:13:28,892 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-19 22:13:28,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:13:28,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 22:13:28,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-19 22:13:28,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-19 22:13:34,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794340568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:34,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:34,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 30 [2024-11-19 22:13:34,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271608708] [2024-11-19 22:13:34,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:34,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 22:13:34,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:34,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 22:13:34,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2024-11-19 22:13:34,678 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) [2024-11-19 22:13:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:34,832 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-11-19 22:13:34,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 22:13:34,833 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) Word has length 76 [2024-11-19 22:13:34,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:34,833 INFO L225 Difference]: With dead ends: 52 [2024-11-19 22:13:34,834 INFO L226 Difference]: Without dead ends: 48 [2024-11-19 22:13:34,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 149 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2024-11-19 22:13:34,835 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 63 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:34,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 105 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:13:34,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-19 22:13:34,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-19 22:13:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-19 22:13:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-11-19 22:13:34,840 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 76 [2024-11-19 22:13:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:34,840 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-11-19 22:13:34,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) [2024-11-19 22:13:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-11-19 22:13:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-19 22:13:34,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:34,843 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:34,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 22:13:35,044 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,SelfDestructingSolverStorable11 [2024-11-19 22:13:35,044 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:35,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:35,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1734686668, now seen corresponding path program 12 times [2024-11-19 22:13:35,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:35,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274612755] [2024-11-19 22:13:35,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:35,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-19 22:13:35,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:35,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274612755] [2024-11-19 22:13:35,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274612755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:35,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520707275] [2024-11-19 22:13:35,866 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 22:13:35,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:35,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:35,870 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) [2024-11-19 22:13:35,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 22:13:36,227 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-19 22:13:36,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:13:36,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 22:13:36,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-19 22:13:36,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-19 22:13:43,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520707275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:43,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:43,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 29] total 32 [2024-11-19 22:13:43,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860422565] [2024-11-19 22:13:43,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:43,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 22:13:43,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:43,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 22:13:43,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-19 22:13:43,407 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-19 22:13:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:43,549 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-11-19 22:13:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 22:13:43,549 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) Word has length 82 [2024-11-19 22:13:43,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:43,551 INFO L225 Difference]: With dead ends: 55 [2024-11-19 22:13:43,552 INFO L226 Difference]: Without dead ends: 51 [2024-11-19 22:13:43,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 161 SyntacticMatches, 13 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=606, Invalid=1286, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 22:13:43,553 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 95 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:43,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 104 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:13:43,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-19 22:13:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-19 22:13:43,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-19 22:13:43,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-11-19 22:13:43,561 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 82 [2024-11-19 22:13:43,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:43,562 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-11-19 22:13:43,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-19 22:13:43,562 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-11-19 22:13:43,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-19 22:13:43,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:43,563 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:43,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 22:13:43,763 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,SelfDestructingSolverStorable12 [2024-11-19 22:13:43,763 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:43,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:43,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1433749930, now seen corresponding path program 13 times [2024-11-19 22:13:43,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:43,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695420274] [2024-11-19 22:13:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:43,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:43,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-19 22:13:44,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:44,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695420274] [2024-11-19 22:13:44,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695420274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:44,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639372598] [2024-11-19 22:13:44,750 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 22:13:44,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:44,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:44,753 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) [2024-11-19 22:13:44,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 22:13:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:45,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 22:13:45,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-19 22:13:45,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:13:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-19 22:13:54,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639372598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:13:54,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:13:54,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 34 [2024-11-19 22:13:54,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757959231] [2024-11-19 22:13:54,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:13:54,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 22:13:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:13:54,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 22:13:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 22:13:54,630 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) [2024-11-19 22:13:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:13:54,817 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2024-11-19 22:13:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 22:13:54,817 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) Word has length 88 [2024-11-19 22:13:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:13:54,818 INFO L225 Difference]: With dead ends: 58 [2024-11-19 22:13:54,818 INFO L226 Difference]: Without dead ends: 54 [2024-11-19 22:13:54,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 173 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=694, Invalid=1468, Unknown=0, NotChecked=0, Total=2162 [2024-11-19 22:13:54,819 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 165 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:13:54,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 114 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:13:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-19 22:13:54,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-19 22:13:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (16), 15 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 22:13:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-11-19 22:13:54,825 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 88 [2024-11-19 22:13:54,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:13:54,826 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-11-19 22:13:54,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) [2024-11-19 22:13:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-11-19 22:13:54,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-19 22:13:54,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:13:54,827 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:13:54,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 22:13:55,027 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,SelfDestructingSolverStorable13 [2024-11-19 22:13:55,027 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:13:55,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:13:55,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1321174388, now seen corresponding path program 14 times [2024-11-19 22:13:55,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:13:55,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406720982] [2024-11-19 22:13:55,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:13:55,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:13:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:55,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:56,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:56,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:56,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:13:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:13:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-19 22:13:56,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:13:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406720982] [2024-11-19 22:13:56,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406720982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:13:56,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789525956] [2024-11-19 22:13:56,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 22:13:56,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:13:56,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:13:56,093 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) [2024-11-19 22:13:56,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 22:13:56,641 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 22:13:56,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:13:56,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 22:13:56,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:13:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-19 22:13:56,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:14:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-19 22:14:08,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789525956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:14:08,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:14:08,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 33] total 36 [2024-11-19 22:14:08,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138711123] [2024-11-19 22:14:08,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:14:08,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-19 22:14:08,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:14:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-19 22:14:08,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 22:14:08,249 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) [2024-11-19 22:14:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:14:08,447 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-11-19 22:14:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 22:14:08,448 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) Word has length 94 [2024-11-19 22:14:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:14:08,448 INFO L225 Difference]: With dead ends: 61 [2024-11-19 22:14:08,448 INFO L226 Difference]: Without dead ends: 57 [2024-11-19 22:14:08,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 185 SyntacticMatches, 15 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=788, Invalid=1662, Unknown=0, NotChecked=0, Total=2450 [2024-11-19 22:14:08,450 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 175 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:14:08,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 116 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:14:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-19 22:14:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-19 22:14:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 22:14:08,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-11-19 22:14:08,456 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 94 [2024-11-19 22:14:08,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:14:08,456 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-11-19 22:14:08,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) [2024-11-19 22:14:08,456 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-11-19 22:14:08,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-19 22:14:08,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:14:08,457 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:14:08,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 22:14:08,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:14:08,658 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:14:08,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:14:08,659 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 15 times [2024-11-19 22:14:08,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:14:08,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724838631] [2024-11-19 22:14:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:14:08,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:14:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:08,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:08,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-19 22:14:09,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:14:09,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724838631] [2024-11-19 22:14:09,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724838631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:14:09,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556351084] [2024-11-19 22:14:09,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 22:14:09,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:14:09,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:14:09,794 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) [2024-11-19 22:14:09,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 22:14:10,442 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-19 22:14:10,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 22:14:10,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 22:14:10,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:14:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-19 22:14:10,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:14:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-19 22:14:24,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556351084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:14:24,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:14:24,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 35] total 38 [2024-11-19 22:14:24,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569869346] [2024-11-19 22:14:24,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:14:24,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-19 22:14:24,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:14:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-19 22:14:24,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1043, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 22:14:24,757 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) [2024-11-19 22:14:24,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:14:24,936 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-11-19 22:14:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 22:14:24,937 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) Word has length 100 [2024-11-19 22:14:24,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:14:24,937 INFO L225 Difference]: With dead ends: 64 [2024-11-19 22:14:24,937 INFO L226 Difference]: Without dead ends: 60 [2024-11-19 22:14:24,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 197 SyntacticMatches, 16 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=888, Invalid=1868, Unknown=0, NotChecked=0, Total=2756 [2024-11-19 22:14:24,938 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 66 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:14:24,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 134 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:14:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-19 22:14:24,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-19 22:14:24,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (18), 17 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 22:14:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-11-19 22:14:24,944 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 100 [2024-11-19 22:14:24,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:14:24,944 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-11-19 22:14:24,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) [2024-11-19 22:14:24,945 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-11-19 22:14:24,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-19 22:14:24,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:14:24,945 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:14:24,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 22:14:25,146 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,SelfDestructingSolverStorable15 [2024-11-19 22:14:25,146 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:14:25,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:14:25,147 INFO L85 PathProgramCache]: Analyzing trace with hash 317812044, now seen corresponding path program 16 times [2024-11-19 22:14:25,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:14:25,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189764108] [2024-11-19 22:14:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:14:25,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:14:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:25,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:25,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:25,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:25,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:25,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:25,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:25,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:25,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:26,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:26,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:26,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:26,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:26,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:26,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:26,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:26,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:26,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:14:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:14:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-19 22:14:26,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:14:26,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189764108] [2024-11-19 22:14:26,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189764108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:14:26,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281091627] [2024-11-19 22:14:26,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 22:14:26,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:14:26,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:14:26,383 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) [2024-11-19 22:14:26,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process