./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/max60-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/max60-2.i -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 6dbb3c8dbc9ecf6e4f72a22b68126998e2267c3eb50185a59b3a9d03df64099d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:02:22,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:02:22,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:02:22,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:02:22,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:02:22,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:02:22,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:02:22,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:02:22,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:02:22,257 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:02:22,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:02:22,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:02:22,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:02:22,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:02:22,261 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:02:22,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:02:22,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:02:22,262 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:02:22,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:02:22,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:02:22,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:02:22,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:02:22,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:02:22,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:02:22,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:02:22,266 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:02:22,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:02:22,267 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:02:22,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:02:22,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:02:22,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:02:22,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:02:22,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:02:22,268 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:02:22,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:02:22,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:02:22,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:02:22,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:02:22,268 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:02:22,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:02:22,269 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:02:22,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:02:22,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dbb3c8dbc9ecf6e4f72a22b68126998e2267c3eb50185a59b3a9d03df64099d [2024-11-18 09:02:22,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:02:22,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:02:22,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:02:22,528 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:02:22,528 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:02:22,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/max60-2.i [2024-11-18 09:02:23,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:02:23,953 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:02:23,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max60-2.i [2024-11-18 09:02:23,960 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9edeaddd5/d22a01734da240e0bdc61b3109c2be72/FLAG3bfa01d36 [2024-11-18 09:02:24,368 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9edeaddd5/d22a01734da240e0bdc61b3109c2be72 [2024-11-18 09:02:24,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:02:24,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:02:24,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:02:24,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:02:24,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:02:24,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,380 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691f8c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24, skipping insertion in model container [2024-11-18 09:02:24,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,399 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:02:24,559 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/reducercommutativity/max60-2.i[1290,1303] [2024-11-18 09:02:24,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:02:24,569 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:02:24,586 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/reducercommutativity/max60-2.i[1290,1303] [2024-11-18 09:02:24,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:02:24,600 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:02:24,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24 WrapperNode [2024-11-18 09:02:24,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:02:24,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:02:24,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:02:24,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:02:24,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,630 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-11-18 09:02:24,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:02:24,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:02:24,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:02:24,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:02:24,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,644 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,654 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-18 09:02:24,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:02:24,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:02:24,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:02:24,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:02:24,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (1/1) ... [2024-11-18 09:02:24,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:02:24,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:24,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 09:02:24,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 09:02:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:02:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure max [2024-11-18 09:02:24,752 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2024-11-18 09:02:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:02:24,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:02:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:02:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:02:24,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:02:24,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:02:24,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:02:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:02:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:02:24,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:02:24,862 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:02:24,865 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:02:25,049 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-18 09:02:25,049 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:02:25,062 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:02:25,063 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 09:02:25,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:25 BoogieIcfgContainer [2024-11-18 09:02:25,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:02:25,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:02:25,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:02:25,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:02:25,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:02:24" (1/3) ... [2024-11-18 09:02:25,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b6ed89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:25, skipping insertion in model container [2024-11-18 09:02:25,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:24" (2/3) ... [2024-11-18 09:02:25,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b6ed89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:25, skipping insertion in model container [2024-11-18 09:02:25,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:25" (3/3) ... [2024-11-18 09:02:25,074 INFO L112 eAbstractionObserver]: Analyzing ICFG max60-2.i [2024-11-18 09:02:25,090 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:02:25,090 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:02:25,140 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:02:25,146 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;@6812034d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:02:25,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:02:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:02:25,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:25,157 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:25,157 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:25,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash 350697856, now seen corresponding path program 1 times [2024-11-18 09:02:25,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:25,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538138629] [2024-11-18 09:02:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:25,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:02:25,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:25,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538138629] [2024-11-18 09:02:25,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538138629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:02:25,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:02:25,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:02:25,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899574312] [2024-11-18 09:02:25,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:02:25,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:02:25,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:25,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:02:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:02:25,407 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:25,426 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2024-11-18 09:02:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:02:25,429 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-18 09:02:25,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:25,435 INFO L225 Difference]: With dead ends: 54 [2024-11-18 09:02:25,436 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 09:02:25,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:02:25,444 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:25,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:25,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 09:02:25,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-18 09:02:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:25,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-18 09:02:25,482 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 29 [2024-11-18 09:02:25,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:25,482 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-18 09:02:25,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-18 09:02:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:02:25,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:25,484 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:25,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:02:25,484 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:25,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash -731724275, now seen corresponding path program 1 times [2024-11-18 09:02:25,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:25,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27078750] [2024-11-18 09:02:25,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:25,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:02:25,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:25,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27078750] [2024-11-18 09:02:25,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27078750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:02:25,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:02:25,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:02:25,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874052900] [2024-11-18 09:02:25,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:02:25,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:02:25,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:02:25,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:02:25,677 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:25,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:25,698 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2024-11-18 09:02:25,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:02:25,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-18 09:02:25,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:25,700 INFO L225 Difference]: With dead ends: 48 [2024-11-18 09:02:25,700 INFO L226 Difference]: Without dead ends: 27 [2024-11-18 09:02:25,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:02:25,703 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:25,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:25,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-18 09:02:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-18 09:02:25,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-18 09:02:25,714 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 29 [2024-11-18 09:02:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:25,714 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-18 09:02:25,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-18 09:02:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 09:02:25,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:25,715 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:25,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:02:25,716 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:25,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:25,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1391874411, now seen corresponding path program 1 times [2024-11-18 09:02:25,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:25,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871026202] [2024-11-18 09:02:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:25,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:02:25,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:25,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871026202] [2024-11-18 09:02:25,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871026202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:25,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266650176] [2024-11-18 09:02:25,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:25,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:25,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:25,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:25,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:02:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:25,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:02:25,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 09:02:25,935 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:02:25,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266650176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:02:25,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:02:25,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:02:25,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437352896] [2024-11-18 09:02:25,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:02:25,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:02:25,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:02:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:02:25,937 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:02:25,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:25,950 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-11-18 09:02:25,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:02:25,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-18 09:02:25,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:25,954 INFO L225 Difference]: With dead ends: 49 [2024-11-18 09:02:25,954 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 09:02:25,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:02:25,955 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:25,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 09:02:25,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-18 09:02:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-18 09:02:25,962 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 31 [2024-11-18 09:02:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:25,962 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-18 09:02:25,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:02:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-18 09:02:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-18 09:02:25,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:25,965 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:25,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 09:02:26,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:26,170 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:26,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:26,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1997828742, now seen corresponding path program 1 times [2024-11-18 09:02:26,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:26,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083807871] [2024-11-18 09:02:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:26,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 09:02:26,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:26,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083807871] [2024-11-18 09:02:26,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083807871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:26,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122684215] [2024-11-18 09:02:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:26,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:26,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:26,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:26,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:02:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:26,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:02:26,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:02:26,367 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:02:26,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122684215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:02:26,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:02:26,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:02:26,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542071897] [2024-11-18 09:02:26,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:02:26,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:02:26,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:02:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:02:26,371 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:02:26,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:26,387 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2024-11-18 09:02:26,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:02:26,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-11-18 09:02:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:26,389 INFO L225 Difference]: With dead ends: 44 [2024-11-18 09:02:26,389 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 09:02:26,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:02:26,392 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:26,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:26,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 09:02:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-18 09:02:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-18 09:02:26,400 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 43 [2024-11-18 09:02:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:26,402 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-18 09:02:26,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:02:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-18 09:02:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 09:02:26,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:26,403 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:26,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:26,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 09:02:26,608 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:26,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:26,609 INFO L85 PathProgramCache]: Analyzing trace with hash 271283108, now seen corresponding path program 1 times [2024-11-18 09:02:26,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:26,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407515303] [2024-11-18 09:02:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:26,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:02:26,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:26,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407515303] [2024-11-18 09:02:26,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407515303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:26,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953808112] [2024-11-18 09:02:26,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:02:26,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:26,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:26,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:26,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:02:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:26,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:02:26,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:02:26,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:02:26,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953808112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:26,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:26,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:02:26,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607456169] [2024-11-18 09:02:26,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:26,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:02:26,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:02:26,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:02:26,840 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:26,866 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2024-11-18 09:02:26,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:02:26,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2024-11-18 09:02:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:26,870 INFO L225 Difference]: With dead ends: 57 [2024-11-18 09:02:26,870 INFO L226 Difference]: Without dead ends: 34 [2024-11-18 09:02:26,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:02:26,872 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:26,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-18 09:02:26,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-18 09:02:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-18 09:02:26,878 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 45 [2024-11-18 09:02:26,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:26,878 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-18 09:02:26,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:26,878 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-18 09:02:26,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 09:02:26,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:26,879 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:26,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:27,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:27,081 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:27,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash 782852926, now seen corresponding path program 2 times [2024-11-18 09:02:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:27,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792476253] [2024-11-18 09:02:27,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:02:27,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:27,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:02:27,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 09:02:27,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:27,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792476253] [2024-11-18 09:02:27,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792476253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:27,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688954507] [2024-11-18 09:02:27,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:02:27,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:27,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:27,212 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:27,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:02:27,295 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:02:27,295 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:27,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:02:27,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:02:27,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 09:02:27,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688954507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:27,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:27,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-18 09:02:27,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696627750] [2024-11-18 09:02:27,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:27,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:02:27,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:27,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:02:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:02:27,455 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:02:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:27,518 INFO L93 Difference]: Finished difference Result 76 states and 97 transitions. [2024-11-18 09:02:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 09:02:27,521 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2024-11-18 09:02:27,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:27,523 INFO L225 Difference]: With dead ends: 76 [2024-11-18 09:02:27,523 INFO L226 Difference]: Without dead ends: 53 [2024-11-18 09:02:27,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:02:27,524 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:27,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:02:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-18 09:02:27,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2024-11-18 09:02:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2024-11-18 09:02:27,535 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 51 [2024-11-18 09:02:27,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:27,536 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2024-11-18 09:02:27,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:02:27,536 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-11-18 09:02:27,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 09:02:27,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:27,537 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:27,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:27,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:27,738 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:27,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:27,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1947040627, now seen corresponding path program 3 times [2024-11-18 09:02:27,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:27,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886428533] [2024-11-18 09:02:27,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:02:27,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:27,778 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:02:27,779 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-18 09:02:27,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:27,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886428533] [2024-11-18 09:02:27,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886428533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:27,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828999520] [2024-11-18 09:02:27,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:02:27,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:27,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:27,833 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:27,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:02:27,915 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:02:27,915 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:27,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:02:27,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-18 09:02:27,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-18 09:02:27,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828999520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:27,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:27,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:02:27,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810854302] [2024-11-18 09:02:27,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:27,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:02:27,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:27,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:02:27,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:02:27,965 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:27,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:27,987 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2024-11-18 09:02:27,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:02:27,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2024-11-18 09:02:27,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:27,988 INFO L225 Difference]: With dead ends: 75 [2024-11-18 09:02:27,988 INFO L226 Difference]: Without dead ends: 56 [2024-11-18 09:02:27,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:02:27,989 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:27,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 124 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-18 09:02:27,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-18 09:02:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:27,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-11-18 09:02:27,994 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 75 [2024-11-18 09:02:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:27,995 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-11-18 09:02:27,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:27,995 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-11-18 09:02:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-18 09:02:27,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:27,996 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:28,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:28,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:28,197 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:28,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:28,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1068829849, now seen corresponding path program 4 times [2024-11-18 09:02:28,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:28,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295409366] [2024-11-18 09:02:28,198 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:02:28,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:28,223 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:02:28,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:28,314 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 09:02:28,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:28,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295409366] [2024-11-18 09:02:28,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295409366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:28,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92629662] [2024-11-18 09:02:28,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:02:28,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:28,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:28,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:28,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:02:28,409 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:02:28,409 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:28,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:02:28,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 09:02:28,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 09:02:28,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92629662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:28,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:28,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 09:02:28,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820064512] [2024-11-18 09:02:28,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:28,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:02:28,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:28,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:02:28,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:02:28,474 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:28,497 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2024-11-18 09:02:28,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:02:28,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 81 [2024-11-18 09:02:28,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:28,499 INFO L225 Difference]: With dead ends: 103 [2024-11-18 09:02:28,499 INFO L226 Difference]: Without dead ends: 72 [2024-11-18 09:02:28,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:02:28,500 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:28,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 83 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-18 09:02:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-18 09:02:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1343283582089552) internal successors, (76), 67 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:28,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2024-11-18 09:02:28,505 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 81 [2024-11-18 09:02:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:28,506 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2024-11-18 09:02:28,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:02:28,506 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2024-11-18 09:02:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 09:02:28,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:28,509 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:28,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:28,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:28,710 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:28,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:28,711 INFO L85 PathProgramCache]: Analyzing trace with hash 755076307, now seen corresponding path program 5 times [2024-11-18 09:02:28,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:28,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962926470] [2024-11-18 09:02:28,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:02:28,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:28,823 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:02:28,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 160 proven. 226 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-11-18 09:02:29,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:29,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962926470] [2024-11-18 09:02:29,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962926470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:29,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063304327] [2024-11-18 09:02:29,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:02:29,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:29,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:29,014 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:29,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:02:29,289 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:02:29,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:29,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:02:29,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:29,342 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2024-11-18 09:02:29,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2024-11-18 09:02:29,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063304327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:29,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:29,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-18 09:02:29,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450058471] [2024-11-18 09:02:29,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:29,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 09:02:29,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:29,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 09:02:29,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:02:29,465 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:02:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:29,521 INFO L93 Difference]: Finished difference Result 151 states and 188 transitions. [2024-11-18 09:02:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 09:02:29,522 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2024-11-18 09:02:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:29,523 INFO L225 Difference]: With dead ends: 151 [2024-11-18 09:02:29,523 INFO L226 Difference]: Without dead ends: 104 [2024-11-18 09:02:29,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:02:29,524 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 40 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:29,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 145 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:29,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-18 09:02:29,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-18 09:02:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 99 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 122 transitions. [2024-11-18 09:02:29,531 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 122 transitions. Word has length 129 [2024-11-18 09:02:29,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:29,532 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 122 transitions. [2024-11-18 09:02:29,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:02:29,532 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 122 transitions. [2024-11-18 09:02:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-18 09:02:29,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:29,537 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:29,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:02:29,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:29,738 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:29,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2021894059, now seen corresponding path program 6 times [2024-11-18 09:02:29,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:29,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686230588] [2024-11-18 09:02:29,738 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:02:29,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:29,853 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:02:29,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:29,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:29,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686230588] [2024-11-18 09:02:29,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686230588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:29,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838288594] [2024-11-18 09:02:29,953 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:02:29,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:29,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:29,954 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:29,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:02:30,124 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:02:30,124 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:30,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:02:30,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 1634 proven. 16 refuted. 0 times theorem prover too weak. 2051 trivial. 0 not checked. [2024-11-18 09:02:30,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3701 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:30,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838288594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:30,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:30,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 09:02:30,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434736163] [2024-11-18 09:02:30,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:30,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 09:02:30,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:30,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 09:02:30,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:02:30,221 INFO L87 Difference]: Start difference. First operand 104 states and 122 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:30,257 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2024-11-18 09:02:30,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 09:02:30,258 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 225 [2024-11-18 09:02:30,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:30,260 INFO L225 Difference]: With dead ends: 183 [2024-11-18 09:02:30,260 INFO L226 Difference]: Without dead ends: 116 [2024-11-18 09:02:30,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:02:30,261 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:30,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 124 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-18 09:02:30,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-18 09:02:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.1531531531531531) internal successors, (128), 111 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:30,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2024-11-18 09:02:30,277 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 225 [2024-11-18 09:02:30,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:30,278 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2024-11-18 09:02:30,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2024-11-18 09:02:30,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-18 09:02:30,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:30,281 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:30,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 09:02:30,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 09:02:30,482 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:30,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:30,483 INFO L85 PathProgramCache]: Analyzing trace with hash -478901537, now seen corresponding path program 7 times [2024-11-18 09:02:30,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:30,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513772279] [2024-11-18 09:02:30,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:02:30,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:30,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:30,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513772279] [2024-11-18 09:02:30,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513772279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:30,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8759789] [2024-11-18 09:02:30,862 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:02:30,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:30,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:30,867 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:30,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:02:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:02:31,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:02:31,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:31,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:31,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8759789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:31,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:31,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 09:02:31,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442661900] [2024-11-18 09:02:31,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:31,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 09:02:31,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:31,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 09:02:31,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:02:31,293 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:31,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:31,362 INFO L93 Difference]: Finished difference Result 233 states and 280 transitions. [2024-11-18 09:02:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 09:02:31,363 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 237 [2024-11-18 09:02:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:31,364 INFO L225 Difference]: With dead ends: 233 [2024-11-18 09:02:31,364 INFO L226 Difference]: Without dead ends: 140 [2024-11-18 09:02:31,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:02:31,365 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:31,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:02:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-18 09:02:31,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-18 09:02:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.125925925925926) internal successors, (152), 135 states have internal predecessors, (152), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2024-11-18 09:02:31,372 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 237 [2024-11-18 09:02:31,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:31,372 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2024-11-18 09:02:31,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2024-11-18 09:02:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-18 09:02:31,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:31,374 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 22, 22, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:31,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:31,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:31,576 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:31,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:31,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1239639111, now seen corresponding path program 8 times [2024-11-18 09:02:31,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:31,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765305313] [2024-11-18 09:02:31,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:02:31,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:31,639 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:02:31,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:32,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765305313] [2024-11-18 09:02:32,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765305313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814521154] [2024-11-18 09:02:32,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:02:32,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:32,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:32,575 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:32,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:02:32,833 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:02:32,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:32,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 09:02:32,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:32,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2024-11-18 09:02:33,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814521154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:33,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:33,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-18 09:02:33,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833082928] [2024-11-18 09:02:33,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:33,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 09:02:33,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 09:02:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 09:02:33,649 INFO L87 Difference]: Start difference. First operand 140 states and 158 transitions. Second operand has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:33,772 INFO L93 Difference]: Finished difference Result 281 states and 340 transitions. [2024-11-18 09:02:33,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 09:02:33,773 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 261 [2024-11-18 09:02:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:33,774 INFO L225 Difference]: With dead ends: 281 [2024-11-18 09:02:33,774 INFO L226 Difference]: Without dead ends: 188 [2024-11-18 09:02:33,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 09:02:33,776 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:33,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 128 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:02:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-18 09:02:33,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-11-18 09:02:33,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.092896174863388) internal successors, (200), 183 states have internal predecessors, (200), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 206 transitions. [2024-11-18 09:02:33,789 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 206 transitions. Word has length 261 [2024-11-18 09:02:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:33,789 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 206 transitions. [2024-11-18 09:02:33,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:02:33,792 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 206 transitions. [2024-11-18 09:02:33,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-18 09:02:33,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:33,795 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 42, 42, 42, 42, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:33,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:33,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 09:02:33,995 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:33,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1897262871, now seen corresponding path program 9 times [2024-11-18 09:02:33,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:33,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364087990] [2024-11-18 09:02:33,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:02:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:34,110 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:02:34,111 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5801 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5701 trivial. 0 not checked. [2024-11-18 09:02:34,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:34,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364087990] [2024-11-18 09:02:34,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364087990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:34,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104970149] [2024-11-18 09:02:34,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:02:34,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:34,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:34,309 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:34,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:02:34,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:02:34,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:34,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 09:02:34,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5801 backedges. 1725 proven. 100 refuted. 0 times theorem prover too weak. 3976 trivial. 0 not checked. [2024-11-18 09:02:34,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5801 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5701 trivial. 0 not checked. [2024-11-18 09:02:34,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104970149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:34,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:34,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 27 [2024-11-18 09:02:34,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124101100] [2024-11-18 09:02:34,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:34,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 09:02:34,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:34,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 09:02:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=397, Unknown=0, NotChecked=0, Total=702 [2024-11-18 09:02:34,926 INFO L87 Difference]: Start difference. First operand 188 states and 206 transitions. Second operand has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 27 states have internal predecessors, (77), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:34,986 INFO L93 Difference]: Finished difference Result 279 states and 323 transitions. [2024-11-18 09:02:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-18 09:02:34,987 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 27 states have internal predecessors, (77), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 309 [2024-11-18 09:02:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:34,988 INFO L225 Difference]: With dead ends: 279 [2024-11-18 09:02:34,988 INFO L226 Difference]: Without dead ends: 212 [2024-11-18 09:02:34,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=305, Invalid=397, Unknown=0, NotChecked=0, Total=702 [2024-11-18 09:02:34,990 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:34,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 111 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:02:34,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-18 09:02:35,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-11-18 09:02:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.0821256038647342) internal successors, (224), 207 states have internal predecessors, (224), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 230 transitions. [2024-11-18 09:02:35,005 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 230 transitions. Word has length 309 [2024-11-18 09:02:35,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:35,006 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 230 transitions. [2024-11-18 09:02:35,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.8518518518518516) internal successors, (77), 27 states have internal predecessors, (77), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:02:35,006 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 230 transitions. [2024-11-18 09:02:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-18 09:02:35,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:35,008 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 42, 42, 42, 42, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:35,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 09:02:35,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 09:02:35,209 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:35,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash 336855935, now seen corresponding path program 10 times [2024-11-18 09:02:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709621718] [2024-11-18 09:02:35,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:02:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:35,303 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:02:35,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6185 backedges. 1632 proven. 378 refuted. 0 times theorem prover too weak. 4175 trivial. 0 not checked. [2024-11-18 09:02:35,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:35,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709621718] [2024-11-18 09:02:35,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709621718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:35,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752906158] [2024-11-18 09:02:35,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:02:35,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:35,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:35,807 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:35,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:02:36,095 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:02:36,095 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:36,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 09:02:36,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:02:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6185 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 4069 trivial. 0 not checked. [2024-11-18 09:02:37,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:02:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6185 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 4069 trivial. 0 not checked. [2024-11-18 09:02:38,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752906158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:02:38,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:02:38,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 49, 49] total 77 [2024-11-18 09:02:38,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664248261] [2024-11-18 09:02:38,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:02:38,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-18 09:02:38,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:02:38,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-18 09:02:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2026, Invalid=3826, Unknown=0, NotChecked=0, Total=5852 [2024-11-18 09:02:38,795 INFO L87 Difference]: Start difference. First operand 212 states and 230 transitions. Second operand has 77 states, 77 states have (on average 2.831168831168831) internal successors, (218), 77 states have internal predecessors, (218), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:02:39,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:02:39,013 INFO L93 Difference]: Finished difference Result 364 states and 419 transitions. [2024-11-18 09:02:39,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-18 09:02:39,014 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.831168831168831) internal successors, (218), 77 states have internal predecessors, (218), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 333 [2024-11-18 09:02:39,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:02:39,015 INFO L225 Difference]: With dead ends: 364 [2024-11-18 09:02:39,016 INFO L226 Difference]: Without dead ends: 247 [2024-11-18 09:02:39,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 572 SyntacticMatches, 34 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2319 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2026, Invalid=3826, Unknown=0, NotChecked=0, Total=5852 [2024-11-18 09:02:39,018 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 46 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:02:39,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 141 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:02:39,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-18 09:02:39,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 244. [2024-11-18 09:02:39,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.0753138075313808) internal successors, (257), 239 states have internal predecessors, (257), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:02:39,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 263 transitions. [2024-11-18 09:02:39,026 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 263 transitions. Word has length 333 [2024-11-18 09:02:39,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:02:39,026 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 263 transitions. [2024-11-18 09:02:39,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.831168831168831) internal successors, (218), 77 states have internal predecessors, (218), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:02:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 263 transitions. [2024-11-18 09:02:39,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-18 09:02:39,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:02:39,029 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 45, 45, 45, 45, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:02:39,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 09:02:39,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 09:02:39,233 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:02:39,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:02:39,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1209538242, now seen corresponding path program 11 times [2024-11-18 09:02:39,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:02:39,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134728128] [2024-11-18 09:02:39,233 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:02:39,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:02:40,366 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2024-11-18 09:02:40,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:02:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8194 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 7710 trivial. 0 not checked. [2024-11-18 09:02:41,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:02:41,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134728128] [2024-11-18 09:02:41,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134728128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:02:41,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322922207] [2024-11-18 09:02:41,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:02:41,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:02:41,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:02:41,205 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:02:41,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process