./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 01:52:43,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 01:52:44,007 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 01:52:44,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 01:52:44,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 01:52:44,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 01:52:44,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 01:52:44,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 01:52:44,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 01:52:44,042 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 01:52:44,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 01:52:44,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 01:52:44,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 01:52:44,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 01:52:44,044 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 01:52:44,044 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 01:52:44,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 01:52:44,045 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 01:52:44,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 01:52:44,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 01:52:44,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 01:52:44,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 01:52:44,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 01:52:44,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 01:52:44,049 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 01:52:44,050 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 01:52:44,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 01:52:44,050 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 01:52:44,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 01:52:44,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 01:52:44,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 01:52:44,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 01:52:44,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:52:44,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 01:52:44,052 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 01:52:44,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 01:52:44,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 01:52:44,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 01:52:44,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 01:52:44,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 01:52:44,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 01:52:44,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 01:52:44,057 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 [2024-10-11 01:52:44,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 01:52:44,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 01:52:44,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 01:52:44,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 01:52:44,318 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 01:52:44,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i [2024-10-11 01:52:45,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 01:52:45,851 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 01:52:45,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i [2024-10-11 01:52:45,857 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/af2b4cca1/2900ac0e6eb042969e0d5cc28e18f92b/FLAG9776fe5d7 [2024-10-11 01:52:46,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/af2b4cca1/2900ac0e6eb042969e0d5cc28e18f92b [2024-10-11 01:52:46,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 01:52:46,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 01:52:46,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 01:52:46,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 01:52:46,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 01:52:46,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e1b9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46, skipping insertion in model container [2024-10-11 01:52:46,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,254 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 01:52:46,416 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i[895,908] [2024-10-11 01:52:46,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:52:46,445 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 01:52:46,457 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i[895,908] [2024-10-11 01:52:46,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:52:46,473 INFO L204 MainTranslator]: Completed translation [2024-10-11 01:52:46,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46 WrapperNode [2024-10-11 01:52:46,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 01:52:46,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 01:52:46,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 01:52:46,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 01:52:46,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,504 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2024-10-11 01:52:46,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 01:52:46,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 01:52:46,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 01:52:46,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 01:52:46,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,515 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,523 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 01:52:46,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 01:52:46,532 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 01:52:46,532 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 01:52:46,532 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 01:52:46,533 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (1/1) ... [2024-10-11 01:52:46,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:52:46,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:52:46,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 01:52:46,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 01:52:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 01:52:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 01:52:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 01:52:46,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 01:52:46,659 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 01:52:46,660 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 01:52:46,739 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-11 01:52:46,739 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 01:52:46,759 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 01:52:46,759 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 01:52:46,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:52:46 BoogieIcfgContainer [2024-10-11 01:52:46,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 01:52:46,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 01:52:46,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 01:52:46,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 01:52:46,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:52:46" (1/3) ... [2024-10-11 01:52:46,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c552c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:52:46, skipping insertion in model container [2024-10-11 01:52:46,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:52:46" (2/3) ... [2024-10-11 01:52:46,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c552c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:52:46, skipping insertion in model container [2024-10-11 01:52:46,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:52:46" (3/3) ... [2024-10-11 01:52:46,767 INFO L112 eAbstractionObserver]: Analyzing ICFG gr2006.i [2024-10-11 01:52:46,779 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 01:52:46,779 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 01:52:46,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 01:52:46,834 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;@59e17f3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 01:52:46,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 01:52:46,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:46,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 01:52:46,842 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:52:46,842 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 01:52:46,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:52:46,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:52:46,847 INFO L85 PathProgramCache]: Analyzing trace with hash 68157933, now seen corresponding path program 1 times [2024-10-11 01:52:46,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:52:46,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613685266] [2024-10-11 01:52:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:52:46,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:52:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:52:46,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:52:46,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613685266] [2024-10-11 01:52:46,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613685266] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:52:46,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:52:46,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 01:52:47,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874229374] [2024-10-11 01:52:47,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:52:47,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 01:52:47,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:52:47,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 01:52:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 01:52:47,030 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:52:47,063 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2024-10-11 01:52:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 01:52:47,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-11 01:52:47,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:52:47,076 INFO L225 Difference]: With dead ends: 16 [2024-10-11 01:52:47,076 INFO L226 Difference]: Without dead ends: 8 [2024-10-11 01:52:47,079 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 [2024-10-11 01:52:47,083 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:52:47,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:52:47,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-10-11 01:52:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-10-11 01:52:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2024-10-11 01:52:47,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2024-10-11 01:52:47,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:52:47,112 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-10-11 01:52:47,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2024-10-11 01:52:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 01:52:47,113 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:52:47,113 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:52:47,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 01:52:47,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:52:47,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:52:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash 693578006, now seen corresponding path program 1 times [2024-10-11 01:52:47,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:52:47,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553161323] [2024-10-11 01:52:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:52:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:52:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:52:47,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:52:47,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553161323] [2024-10-11 01:52:47,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553161323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:52:47,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:52:47,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 01:52:47,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010777326] [2024-10-11 01:52:47,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:52:47,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:52:47,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:52:47,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:52:47,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:52:47,231 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:52:47,255 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2024-10-11 01:52:47,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:52:47,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-11 01:52:47,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:52:47,257 INFO L225 Difference]: With dead ends: 19 [2024-10-11 01:52:47,257 INFO L226 Difference]: Without dead ends: 12 [2024-10-11 01:52:47,258 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 [2024-10-11 01:52:47,259 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:52:47,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:52:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-11 01:52:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2024-10-11 01:52:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-10-11 01:52:47,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2024-10-11 01:52:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:52:47,265 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-10-11 01:52:47,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-10-11 01:52:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 01:52:47,267 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:52:47,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:52:47,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 01:52:47,268 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:52:47,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:52:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash 691730964, now seen corresponding path program 1 times [2024-10-11 01:52:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:52:47,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657486316] [2024-10-11 01:52:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:52:47,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:52:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:52:47,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:52:47,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657486316] [2024-10-11 01:52:47,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657486316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:52:47,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:52:47,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:52:47,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842846510] [2024-10-11 01:52:47,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:52:47,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:52:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:52:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:52:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:52:47,397 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:52:47,435 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-10-11 01:52:47,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:52:47,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-11 01:52:47,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:52:47,436 INFO L225 Difference]: With dead ends: 17 [2024-10-11 01:52:47,436 INFO L226 Difference]: Without dead ends: 13 [2024-10-11 01:52:47,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:52:47,438 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:52:47,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:52:47,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-11 01:52:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-11 01:52:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-10-11 01:52:47,446 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2024-10-11 01:52:47,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:52:47,447 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-10-11 01:52:47,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-10-11 01:52:47,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 01:52:47,447 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:52:47,448 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:52:47,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 01:52:47,448 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:52:47,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:52:47,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1437324855, now seen corresponding path program 1 times [2024-10-11 01:52:47,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:52:47,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709419362] [2024-10-11 01:52:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:52:47,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:52:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:52:47,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:52:47,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709419362] [2024-10-11 01:52:47,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709419362] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:52:47,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171993620] [2024-10-11 01:52:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:52:47,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:52:47,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:52:47,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:52:47,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 01:52:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:47,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 01:52:47,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:52:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:52:47,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:52:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:52:47,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171993620] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:52:47,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:52:47,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-11 01:52:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276825842] [2024-10-11 01:52:47,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:52:47,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 01:52:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:52:47,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 01:52:47,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:52:47,675 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:52:47,719 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2024-10-11 01:52:47,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 01:52:47,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-11 01:52:47,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:52:47,720 INFO L225 Difference]: With dead ends: 31 [2024-10-11 01:52:47,720 INFO L226 Difference]: Without dead ends: 24 [2024-10-11 01:52:47,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:52:47,721 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:52:47,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:52:47,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-11 01:52:47,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-10-11 01:52:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-10-11 01:52:47,730 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2024-10-11 01:52:47,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:52:47,730 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-10-11 01:52:47,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:47,730 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-10-11 01:52:47,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 01:52:47,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:52:47,731 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2024-10-11 01:52:47,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 01:52:47,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:52:47,932 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:52:47,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:52:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1112727082, now seen corresponding path program 2 times [2024-10-11 01:52:47,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:52:47,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105106234] [2024-10-11 01:52:47,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:52:47,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:52:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:52:48,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:52:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105106234] [2024-10-11 01:52:48,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105106234] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:52:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185044431] [2024-10-11 01:52:48,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:52:48,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:52:48,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:52:48,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:52:48,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 01:52:48,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:52:48,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:52:48,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 01:52:48,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:52:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:52:48,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:52:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:52:48,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185044431] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:52:48,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:52:48,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-11 01:52:48,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230025125] [2024-10-11 01:52:48,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:52:48,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 01:52:48,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:52:48,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 01:52:48,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:52:48,300 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:48,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:52:48,428 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-10-11 01:52:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 01:52:48,429 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-11 01:52:48,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:52:48,430 INFO L225 Difference]: With dead ends: 46 [2024-10-11 01:52:48,431 INFO L226 Difference]: Without dead ends: 39 [2024-10-11 01:52:48,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2024-10-11 01:52:48,434 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:52:48,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 31 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:52:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-11 01:52:48,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2024-10-11 01:52:48,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-10-11 01:52:48,444 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 19 [2024-10-11 01:52:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:52:48,444 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-10-11 01:52:48,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:48,445 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-10-11 01:52:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 01:52:48,446 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:52:48,446 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 5, 5, 1, 1, 1, 1, 1] [2024-10-11 01:52:48,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 01:52:48,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:52:48,652 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:52:48,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:52:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash -934894793, now seen corresponding path program 3 times [2024-10-11 01:52:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:52:48,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172373221] [2024-10-11 01:52:48,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:52:48,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:52:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 73 proven. 40 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:52:48,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:52:48,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172373221] [2024-10-11 01:52:48,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172373221] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:52:48,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674429624] [2024-10-11 01:52:48,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:52:48,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:52:48,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:52:48,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:52:48,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 01:52:48,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-10-11 01:52:48,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:52:48,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 01:52:48,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:52:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 9 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:52:48,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:52:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 9 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:52:49,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674429624] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:52:49,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:52:49,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 22 [2024-10-11 01:52:49,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391435641] [2024-10-11 01:52:49,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:52:49,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 01:52:49,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:52:49,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 01:52:49,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:52:49,258 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:52:49,359 INFO L93 Difference]: Finished difference Result 103 states and 128 transitions. [2024-10-11 01:52:49,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 01:52:49,360 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-11 01:52:49,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:52:49,361 INFO L225 Difference]: With dead ends: 103 [2024-10-11 01:52:49,361 INFO L226 Difference]: Without dead ends: 83 [2024-10-11 01:52:49,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:52:49,363 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:52:49,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 42 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:52:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-11 01:52:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2024-10-11 01:52:49,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0759493670886076) internal successors, (85), 79 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2024-10-11 01:52:49,374 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 34 [2024-10-11 01:52:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:52:49,374 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2024-10-11 01:52:49,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2024-10-11 01:52:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 01:52:49,376 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:52:49,377 INFO L215 NwaCegarLoop]: trace histogram [25, 24, 20, 5, 1, 1, 1, 1, 1] [2024-10-11 01:52:49,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 01:52:49,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:52:49,581 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:52:49,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:52:49,581 INFO L85 PathProgramCache]: Analyzing trace with hash 867380246, now seen corresponding path program 4 times [2024-10-11 01:52:49,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:52:49,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013189177] [2024-10-11 01:52:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:52:49,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:52:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 268 proven. 610 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:52:50,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:52:50,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013189177] [2024-10-11 01:52:50,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013189177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:52:50,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451012810] [2024-10-11 01:52:50,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:52:50,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:52:50,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:52:50,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:52:50,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 01:52:50,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:52:50,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:52:50,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 01:52:50,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:52:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 94 proven. 805 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:52:50,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:52:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 94 proven. 805 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:52:51,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451012810] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:52:51,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:52:51,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 25] total 50 [2024-10-11 01:52:51,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574762517] [2024-10-11 01:52:51,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:52:51,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-11 01:52:51,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:52:51,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-11 01:52:51,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-10-11 01:52:51,384 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 51 states, 51 states have (on average 3.0588235294117645) internal successors, (156), 50 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:52:51,550 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2024-10-11 01:52:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-10-11 01:52:51,551 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.0588235294117645) internal successors, (156), 50 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-11 01:52:51,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:52:51,552 INFO L225 Difference]: With dead ends: 187 [2024-10-11 01:52:51,552 INFO L226 Difference]: Without dead ends: 167 [2024-10-11 01:52:51,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-10-11 01:52:51,555 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:52:51,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 70 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:52:51,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-10-11 01:52:51,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2024-10-11 01:52:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0368098159509203) internal successors, (169), 163 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 169 transitions. [2024-10-11 01:52:51,581 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 169 transitions. Word has length 79 [2024-10-11 01:52:51,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:52:51,582 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 169 transitions. [2024-10-11 01:52:51,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.0588235294117645) internal successors, (156), 50 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:51,582 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 169 transitions. [2024-10-11 01:52:51,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-11 01:52:51,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:52:51,587 INFO L215 NwaCegarLoop]: trace histogram [53, 52, 48, 5, 1, 1, 1, 1, 1] [2024-10-11 01:52:51,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 01:52:51,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 01:52:51,792 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:52:51,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:52:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash -434890410, now seen corresponding path program 5 times [2024-10-11 01:52:51,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:52:51,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780680078] [2024-10-11 01:52:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:52:51,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:52:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 632 proven. 3480 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:52:53,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:52:53,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780680078] [2024-10-11 01:52:53,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780680078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:52:53,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282021246] [2024-10-11 01:52:53,834 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:52:53,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:52:53,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:52:53,838 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:52:53,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 01:52:53,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2024-10-11 01:52:53,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:52:53,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-11 01:52:53,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:52:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 632 proven. 3480 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:52:54,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:52:55,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 632 proven. 3480 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 01:52:55,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282021246] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:52:55,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:52:55,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2024-10-11 01:52:55,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395849893] [2024-10-11 01:52:55,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:52:55,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-11 01:52:55,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:52:55,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-11 01:52:55,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-10-11 01:52:55,470 INFO L87 Difference]: Start difference. First operand 164 states and 169 transitions. Second operand has 53 states, 53 states have (on average 3.0754716981132075) internal successors, (163), 52 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:52:55,620 INFO L93 Difference]: Finished difference Result 193 states and 205 transitions. [2024-10-11 01:52:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-10-11 01:52:55,621 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.0754716981132075) internal successors, (163), 52 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-10-11 01:52:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:52:55,623 INFO L225 Difference]: With dead ends: 193 [2024-10-11 01:52:55,623 INFO L226 Difference]: Without dead ends: 173 [2024-10-11 01:52:55,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 275 SyntacticMatches, 48 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-10-11 01:52:55,625 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:52:55,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:52:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-10-11 01:52:55,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2024-10-11 01:52:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.0355029585798816) internal successors, (175), 169 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 175 transitions. [2024-10-11 01:52:55,637 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 175 transitions. Word has length 163 [2024-10-11 01:52:55,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:52:55,638 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 175 transitions. [2024-10-11 01:52:55,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.0754716981132075) internal successors, (163), 52 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 175 transitions. [2024-10-11 01:52:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-11 01:52:55,640 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:52:55,640 INFO L215 NwaCegarLoop]: trace histogram [55, 54, 50, 5, 1, 1, 1, 1, 1] [2024-10-11 01:52:55,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 01:52:55,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:52:55,845 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:52:55,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:52:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash 239577526, now seen corresponding path program 6 times [2024-10-11 01:52:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:52:55,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61077721] [2024-10-11 01:52:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:52:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:52:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:56,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 1416 proven. 57 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2024-10-11 01:52:56,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:52:56,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61077721] [2024-10-11 01:52:56,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61077721] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:52:56,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261726521] [2024-10-11 01:52:56,086 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:52:56,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:52:56,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:52:56,088 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:52:56,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 01:52:56,167 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2024-10-11 01:52:56,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:52:56,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:52:56,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:52:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 1416 proven. 57 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2024-10-11 01:52:56,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:52:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 1416 proven. 57 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2024-10-11 01:52:56,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261726521] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:52:56,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:52:56,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2024-10-11 01:52:56,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709405970] [2024-10-11 01:52:56,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:52:56,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 01:52:56,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:52:56,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 01:52:56,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:52:56,300 INFO L87 Difference]: Start difference. First operand 170 states and 175 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:56,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:52:56,333 INFO L93 Difference]: Finished difference Result 190 states and 200 transitions. [2024-10-11 01:52:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 01:52:56,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2024-10-11 01:52:56,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:52:56,338 INFO L225 Difference]: With dead ends: 190 [2024-10-11 01:52:56,339 INFO L226 Difference]: Without dead ends: 186 [2024-10-11 01:52:56,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 333 SyntacticMatches, 10 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:52:56,340 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:52:56,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:52:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-10-11 01:52:56,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 173. [2024-10-11 01:52:56,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.0406976744186047) internal successors, (179), 172 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:56,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 179 transitions. [2024-10-11 01:52:56,360 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 179 transitions. Word has length 169 [2024-10-11 01:52:56,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:52:56,360 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 179 transitions. [2024-10-11 01:52:56,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:56,360 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 179 transitions. [2024-10-11 01:52:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-11 01:52:56,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:52:56,366 INFO L215 NwaCegarLoop]: trace histogram [56, 55, 50, 6, 1, 1, 1, 1, 1] [2024-10-11 01:52:56,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 01:52:56,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 01:52:56,567 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:52:56,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:52:56,568 INFO L85 PathProgramCache]: Analyzing trace with hash 351693653, now seen corresponding path program 7 times [2024-10-11 01:52:56,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:52:56,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496207918] [2024-10-11 01:52:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:52:56,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:52:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 1681 proven. 86 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2024-10-11 01:52:56,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:52:56,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496207918] [2024-10-11 01:52:56,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496207918] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:52:56,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797575240] [2024-10-11 01:52:56,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:52:56,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:52:56,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:52:56,813 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:52:56,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 01:52:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:52:56,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-11 01:52:56,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:52:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 4518 proven. 86 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 01:52:58,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:52:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 4518 proven. 86 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 01:52:59,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797575240] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:52:59,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:52:59,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 52, 52] total 97 [2024-10-11 01:52:59,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155815239] [2024-10-11 01:52:59,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:52:59,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-10-11 01:52:59,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:52:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-10-11 01:52:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-10-11 01:52:59,377 INFO L87 Difference]: Start difference. First operand 173 states and 179 transitions. Second operand has 97 states, 97 states have (on average 3.1649484536082473) internal successors, (307), 97 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:59,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:52:59,901 INFO L93 Difference]: Finished difference Result 1032 states and 1352 transitions. [2024-10-11 01:52:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-10-11 01:52:59,902 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.1649484536082473) internal successors, (307), 97 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2024-10-11 01:52:59,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:52:59,906 INFO L225 Difference]: With dead ends: 1032 [2024-10-11 01:52:59,906 INFO L226 Difference]: Without dead ends: 1028 [2024-10-11 01:52:59,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 250 SyntacticMatches, 12 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4964 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-10-11 01:52:59,909 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:52:59,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:52:59,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2024-10-11 01:52:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 308. [2024-10-11 01:52:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.1693811074918568) internal successors, (359), 307 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:59,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 359 transitions. [2024-10-11 01:52:59,944 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 359 transitions. Word has length 172 [2024-10-11 01:52:59,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:52:59,944 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 359 transitions. [2024-10-11 01:52:59,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.1649484536082473) internal successors, (307), 97 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:52:59,945 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 359 transitions. [2024-10-11 01:52:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-10-11 01:52:59,949 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:52:59,950 INFO L215 NwaCegarLoop]: trace histogram [101, 100, 51, 50, 1, 1, 1, 1, 1] [2024-10-11 01:52:59,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 01:53:00,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:53:00,151 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:53:00,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:53:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1656397546, now seen corresponding path program 8 times [2024-10-11 01:53:00,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:53:00,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760880230] [2024-10-11 01:53:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:53:00,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:53:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:53:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:53:05,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:53:05,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760880230] [2024-10-11 01:53:05,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760880230] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:53:05,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600704304] [2024-10-11 01:53:05,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:53:05,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:53:05,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:53:05,314 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:53:05,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 01:53:05,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:53:05,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:53:05,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 205 conjuncts are in the unsatisfiable core [2024-10-11 01:53:05,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:53:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:53:08,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:53:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:53:09,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600704304] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:53:09,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:53:09,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103, 103] total 154 [2024-10-11 01:53:09,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114249671] [2024-10-11 01:53:09,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:53:09,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2024-10-11 01:53:09,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:53:09,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2024-10-11 01:53:09,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2858, Invalid=21012, Unknown=0, NotChecked=0, Total=23870 [2024-10-11 01:53:09,021 INFO L87 Difference]: Start difference. First operand 308 states and 359 transitions. Second operand has 155 states, 155 states have (on average 2.9612903225806453) internal successors, (459), 154 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:53:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:53:14,752 INFO L93 Difference]: Finished difference Result 4394 states and 5822 transitions. [2024-10-11 01:53:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-10-11 01:53:14,753 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 2.9612903225806453) internal successors, (459), 154 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 307 [2024-10-11 01:53:14,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:53:14,769 INFO L225 Difference]: With dead ends: 4394 [2024-10-11 01:53:14,769 INFO L226 Difference]: Without dead ends: 4234 [2024-10-11 01:53:14,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 562 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7702 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2858, Invalid=21012, Unknown=0, NotChecked=0, Total=23870 [2024-10-11 01:53:14,780 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 49 mSDsluCounter, 9855 mSDsCounter, 0 mSdLazyCounter, 17043 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 10008 SdHoareTripleChecker+Invalid, 17095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 17043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:53:14,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 10008 Invalid, 17095 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 17043 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-10-11 01:53:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2024-10-11 01:53:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 4185. [2024-10-11 01:53:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4185 states, 4184 states have (on average 1.0241395793499044) internal successors, (4285), 4184 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:53:15,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 4285 transitions. [2024-10-11 01:53:15,092 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 4285 transitions. Word has length 307 [2024-10-11 01:53:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:53:15,093 INFO L471 AbstractCegarLoop]: Abstraction has 4185 states and 4285 transitions. [2024-10-11 01:53:15,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 2.9612903225806453) internal successors, (459), 154 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:53:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 4285 transitions. [2024-10-11 01:53:15,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-10-11 01:53:15,098 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:53:15,098 INFO L215 NwaCegarLoop]: trace histogram [102, 101, 52, 50, 1, 1, 1, 1, 1] [2024-10-11 01:53:15,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 01:53:15,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 01:53:15,302 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:53:15,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:53:15,304 INFO L85 PathProgramCache]: Analyzing trace with hash 473233397, now seen corresponding path program 9 times [2024-10-11 01:53:15,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:53:15,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22687778] [2024-10-11 01:53:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:53:15,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:53:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:53:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7403 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-10-11 01:53:18,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:53:18,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22687778] [2024-10-11 01:53:18,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22687778] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:53:18,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130056839] [2024-10-11 01:53:18,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:53:18,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:53:18,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:53:18,340 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:53:18,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 01:53:18,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2024-10-11 01:53:18,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:53:18,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-10-11 01:53:18,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:53:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7401 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-10-11 01:53:18,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:53:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7401 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-10-11 01:53:20,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130056839] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:53:20,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:53:20,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 54 [2024-10-11 01:53:20,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721829552] [2024-10-11 01:53:20,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:53:20,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-11 01:53:20,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:53:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-11 01:53:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2024-10-11 01:53:20,984 INFO L87 Difference]: Start difference. First operand 4185 states and 4285 transitions. Second operand has 55 states, 55 states have (on average 3.890909090909091) internal successors, (214), 54 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:53:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:53:21,231 INFO L93 Difference]: Finished difference Result 4336 states and 4436 transitions. [2024-10-11 01:53:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-11 01:53:21,232 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.890909090909091) internal successors, (214), 54 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2024-10-11 01:53:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:53:21,234 INFO L225 Difference]: With dead ends: 4336 [2024-10-11 01:53:21,234 INFO L226 Difference]: Without dead ends: 0 [2024-10-11 01:53:21,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 566 SyntacticMatches, 102 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2024-10-11 01:53:21,239 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:53:21,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:53:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-11 01:53:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-11 01:53:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:53:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-11 01:53:21,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 310 [2024-10-11 01:53:21,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:53:21,241 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-11 01:53:21,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.890909090909091) internal successors, (214), 54 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:53:21,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-11 01:53:21,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-11 01:53:21,244 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-11 01:53:21,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 01:53:21,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:53:21,448 INFO L407 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1] [2024-10-11 01:53:21,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-11 01:53:23,097 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 01:53:23,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 01:53:23 BoogieIcfgContainer [2024-10-11 01:53:23,147 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 01:53:23,147 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 01:53:23,147 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 01:53:23,148 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 01:53:23,149 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:52:46" (3/4) ... [2024-10-11 01:53:23,151 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 01:53:23,157 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-10-11 01:53:23,157 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 01:53:23,157 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 01:53:23,157 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 01:53:23,244 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 01:53:23,245 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 01:53:23,245 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 01:53:23,246 INFO L158 Benchmark]: Toolchain (without parser) took 37021.93ms. Allocated memory was 163.6MB in the beginning and 755.0MB in the end (delta: 591.4MB). Free memory was 132.3MB in the beginning and 504.9MB in the end (delta: -372.6MB). Peak memory consumption was 218.6MB. Max. memory is 16.1GB. [2024-10-11 01:53:23,246 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 88.1MB in the beginning and 88.0MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 01:53:23,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.12ms. Allocated memory is still 163.6MB. Free memory was 132.3MB in the beginning and 120.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 01:53:23,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.99ms. Allocated memory is still 163.6MB. Free memory was 120.3MB in the beginning and 118.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 01:53:23,247 INFO L158 Benchmark]: Boogie Preprocessor took 24.81ms. Allocated memory is still 163.6MB. Free memory was 118.8MB in the beginning and 117.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 01:53:23,247 INFO L158 Benchmark]: RCFGBuilder took 228.06ms. Allocated memory is still 163.6MB. Free memory was 117.5MB in the beginning and 107.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 01:53:23,247 INFO L158 Benchmark]: TraceAbstraction took 36384.88ms. Allocated memory was 163.6MB in the beginning and 755.0MB in the end (delta: 591.4MB). Free memory was 106.2MB in the beginning and 509.1MB in the end (delta: -402.8MB). Peak memory consumption was 434.6MB. Max. memory is 16.1GB. [2024-10-11 01:53:23,247 INFO L158 Benchmark]: Witness Printer took 97.92ms. Allocated memory is still 755.0MB. Free memory was 509.1MB in the beginning and 504.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 01:53:23,249 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 88.1MB in the beginning and 88.0MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.12ms. Allocated memory is still 163.6MB. Free memory was 132.3MB in the beginning and 120.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.99ms. Allocated memory is still 163.6MB. Free memory was 120.3MB in the beginning and 118.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.81ms. Allocated memory is still 163.6MB. Free memory was 118.8MB in the beginning and 117.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 228.06ms. Allocated memory is still 163.6MB. Free memory was 117.5MB in the beginning and 107.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 36384.88ms. Allocated memory was 163.6MB in the beginning and 755.0MB in the end (delta: 591.4MB). Free memory was 106.2MB in the beginning and 509.1MB in the end (delta: -402.8MB). Peak memory consumption was 434.6MB. Max. memory is 16.1GB. * Witness Printer took 97.92ms. Allocated memory is still 755.0MB. Free memory was 509.1MB in the beginning and 504.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.6s, OverallIterations: 12, TraceHistogramMax: 102, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 10591 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10320 mSDsCounter, 187 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18290 IncrementalHoareTripleChecker+Invalid, 18477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 187 mSolverCounterUnsat, 271 mSDtfsCounter, 18290 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2848 GetRequests, 2215 SyntacticMatches, 175 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17640 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4185occurred in iteration=11, InterpolantAutomatonStates: 379, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 799 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 23.3s InterpolantComputationTime, 2545 NumberOfCodeBlocks, 2467 NumberOfCodeBlocksAsserted, 214 NumberOfCheckSat, 3778 ConstructedInterpolants, 0 QuantifiedInterpolants, 10197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2915 ConjunctsInSsa, 474 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 53570/134640 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((2 == y) && (98 == x)) || ((44 == y) && (44 == x))) || ((x == 15) && (y == 15))) || ((y == 39) && (x == 39))) || ((y == 33) && (x == 33))) || ((6 == y) && (6 == x))) || ((35 == y) && (x == 65))) || ((y == 10) && (x == 90))) || ((87 == x) && (y == 13))) || ((x == 1) && (y == 1))) || ((x == 63) && (y == 37))) || ((23 == y) && (23 == x))) || ((x == 86) && (14 == y))) || ((y == 28) && (x == 28))) || ((x == 24) && (y == 24))) || ((x == 13) && (y == 13))) || ((x == 26) && (y == 26))) || ((7 == y) && (7 == x))) || ((23 == y) && (77 == x))) || ((y == 12) && (88 == x))) || ((56 == x) && (44 == y))) || ((x == 25) && (y == 25))) || ((21 == y) && (21 == x))) || ((22 == y) && (x == 78))) || ((40 == y) && (40 == x))) || ((92 == x) && (y == 8))) || ((x == 8) && (y == 8))) || ((x == 34) && (y == 34))) || ((y == 26) && (x == 74))) || ((19 == x) && (19 == y))) || ((x == 36) && (y == 36))) || ((y == 43) && (57 == x))) || ((x == 54) && (46 == y))) || ((x == 11) && (y == 11))) || ((16 == x) && (16 == y))) || ((69 == x) && (31 == y))) || ((49 == x) && (49 == y))) || ((76 == x) && (y == 24))) || ((x == 73) && (y == 27))) || ((47 == y) && (47 == x))) || ((35 == y) && (35 == x))) || ((51 == x) && (49 == y))) || ((y == 18) && (82 == x))) || ((y == 10) && (x == 10))) || ((x == 96) && (y == 4))) || ((x == 58) && (42 == y))) || ((3 == y) && (97 == x))) || ((x == 37) && (y == 37))) || ((x == 75) && (y == 25))) || ((89 == x) && (y == 11))) || ((3 == x) && (3 == y))) || ((5 == x) && (5 == y))) || ((41 == y) && (59 == x))) || ((y == 17) && (x == 17))) || ((y == 28) && (72 == x))) || ((x == 70) && (30 == y))) || ((14 == y) && (14 == x))) || ((y == 39) && (x == 61))) || ((32 == y) && (32 == x))) || ((x == 60) && (40 == y))) || ((22 == y) && (22 == x))) || ((91 == x) && (9 == y))) || ((7 == y) && (x == 93))) || ((31 == x) && (31 == y))) || ((y == 27) && (x == 27))) || ((y == 0) && (x == 0))) || ((y == 12) && (x == 12))) || ((71 == x) && (29 == y))) || ((47 == y) && (53 == x))) || ((2 == x) && (2 == y))) || ((32 == y) && (68 == x))) || ((x == 83) && (y == 17))) || ((9 == x) && (9 == y))) || ((46 == y) && (46 == x))) || ((30 == x) && (30 == y))) || ((y == 34) && (66 == x))) || ((y == 48) && (52 == x))) || ((5 == y) && (95 == x))) || ((y == 20) && (x == 20))) || ((42 == y) && (42 == x))) || ((x == 18) && (y == 18))) || ((y == 45) && (x == 55))) || ((y == 38) && (62 == x))) || ((41 == y) && (41 == x))) || ((y == 20) && (x == 80))) || ((y == 43) && (x == 43))) || ((x == 79) && (21 == y))) || ((29 == x) && (29 == y))) || ((y == 4) && (x == 4))) || ((16 == y) && (84 == x))) || ((x == 85) && (y == 15))) || ((x == 99) && (y == 1))) || ((x == 100) && (y == 0))) || ((y == 50) && (x == 50))) || ((6 == y) && (94 == x))) || ((81 == x) && (19 == y))) || ((y == 45) && (x == 45))) || ((y == 48) && (x == 48))) || ((x == 38) && (y == 38))) || ((64 == x) && (y == 36))) || ((y == 33) && (67 == x))) RESULT: Ultimate proved your program to be correct! [2024-10-11 01:53:23,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE