./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b2a54f54b02d2bb65a6f46eeae11edba1907f4f082d2aaa313102e422e7e6122 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 20:22:37,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 20:22:37,951 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 20:22:37,957 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 20:22:37,957 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 20:22:37,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 20:22:37,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 20:22:37,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 20:22:37,977 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 20:22:37,978 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 20:22:37,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 20:22:37,978 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 20:22:37,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 20:22:37,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 20:22:37,979 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 20:22:37,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 20:22:37,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 20:22:37,980 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 20:22:37,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 20:22:37,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 20:22:37,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 20:22:37,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 20:22:37,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 20:22:37,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 20:22:37,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 20:22:37,983 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 20:22:37,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 20:22:37,984 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 20:22:37,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 20:22:37,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 20:22:37,984 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 20:22:37,984 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 20:22:37,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 20:22:37,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 20:22:37,985 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 20:22:37,985 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 20:22:37,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 20:22:37,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 20:22:37,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 20:22:37,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 20:22:37,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 20:22:37,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 20:22:37,987 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2a54f54b02d2bb65a6f46eeae11edba1907f4f082d2aaa313102e422e7e6122 [2024-11-11 20:22:38,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 20:22:38,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 20:22:38,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 20:22:38,221 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 20:22:38,222 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 20:22:38,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c [2024-11-11 20:22:39,410 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 20:22:39,577 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 20:22:39,578 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c [2024-11-11 20:22:39,583 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05806e8fb/88ddcc02b8054967b4cd274ed0dda883/FLAG68481263c [2024-11-11 20:22:39,990 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05806e8fb/88ddcc02b8054967b4cd274ed0dda883 [2024-11-11 20:22:39,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 20:22:39,995 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 20:22:39,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 20:22:39,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 20:22:40,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 20:22:40,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 08:22:39" (1/1) ... [2024-11-11 20:22:40,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5d9fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40, skipping insertion in model container [2024-11-11 20:22:40,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 08:22:39" (1/1) ... [2024-11-11 20:22:40,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 20:22:40,155 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c[458,471] [2024-11-11 20:22:40,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 20:22:40,173 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 20:22:40,182 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c[458,471] [2024-11-11 20:22:40,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 20:22:40,198 INFO L204 MainTranslator]: Completed translation [2024-11-11 20:22:40,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40 WrapperNode [2024-11-11 20:22:40,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 20:22:40,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 20:22:40,200 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 20:22:40,200 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 20:22:40,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,223 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2024-11-11 20:22:40,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 20:22:40,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 20:22:40,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 20:22:40,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 20:22:40,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,232 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,240 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-11 20:22:40,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 20:22:40,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 20:22:40,248 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 20:22:40,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 20:22:40,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (1/1) ... [2024-11-11 20:22:40,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 20:22:40,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:22:40,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 20:22:40,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 20:22:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 20:22:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 20:22:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 20:22:40,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 20:22:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-11 20:22:40,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-11 20:22:40,370 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 20:22:40,372 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 20:22:40,482 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-11 20:22:40,482 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 20:22:40,491 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 20:22:40,492 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-11 20:22:40,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 08:22:40 BoogieIcfgContainer [2024-11-11 20:22:40,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 20:22:40,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 20:22:40,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 20:22:40,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 20:22:40,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 08:22:39" (1/3) ... [2024-11-11 20:22:40,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568e836c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 08:22:40, skipping insertion in model container [2024-11-11 20:22:40,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:22:40" (2/3) ... [2024-11-11 20:22:40,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568e836c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 08:22:40, skipping insertion in model container [2024-11-11 20:22:40,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 08:22:40" (3/3) ... [2024-11-11 20:22:40,499 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound5.c [2024-11-11 20:22:40,512 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 20:22:40,512 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 20:22:40,559 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 20:22:40,565 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;@43d92b32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 20:22:40,565 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 20:22:40,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 20:22:40,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-11 20:22:40,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:22:40,573 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 20:22:40,573 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:22:40,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:22:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash -589436290, now seen corresponding path program 1 times [2024-11-11 20:22:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:22:40,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714754458] [2024-11-11 20:22:40,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:22:40,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:22:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:22:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 20:22:40,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:22:40,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714754458] [2024-11-11 20:22:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714754458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:22:40,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 20:22:40,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 20:22:40,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116448567] [2024-11-11 20:22:40,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:22:40,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 20:22:40,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:22:40,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 20:22:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 20:22:40,732 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 20:22:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:22:40,744 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2024-11-11 20:22:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 20:22:40,745 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-11 20:22:40,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:22:40,750 INFO L225 Difference]: With dead ends: 35 [2024-11-11 20:22:40,750 INFO L226 Difference]: Without dead ends: 15 [2024-11-11 20:22:40,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 20:22:40,755 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 20:22:40,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 20:22:40,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-11 20:22:40,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-11 20:22:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-11 20:22:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-11 20:22:40,779 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2024-11-11 20:22:40,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:22:40,779 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-11 20:22:40,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 20:22:40,779 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-11 20:22:40,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-11 20:22:40,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:22:40,780 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 20:22:40,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 20:22:40,780 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:22:40,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:22:40,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1187358532, now seen corresponding path program 1 times [2024-11-11 20:22:40,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:22:40,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808466047] [2024-11-11 20:22:40,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:22:40,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:22:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 20:22:40,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522061107] [2024-11-11 20:22:40,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:22:40,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:22:40,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:22:40,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 20:22:40,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 20:22:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:22:40,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-11 20:22:40,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:22:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 20:22:40,947 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:22:40,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:22:40,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808466047] [2024-11-11 20:22:40,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 20:22:40,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522061107] [2024-11-11 20:22:40,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522061107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:22:40,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 20:22:40,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 20:22:40,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071014254] [2024-11-11 20:22:40,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:22:40,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 20:22:40,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:22:40,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 20:22:40,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 20:22:40,952 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 20:22:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:22:41,010 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-11 20:22:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 20:22:41,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-11 20:22:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:22:41,011 INFO L225 Difference]: With dead ends: 26 [2024-11-11 20:22:41,012 INFO L226 Difference]: Without dead ends: 22 [2024-11-11 20:22:41,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-11 20:22:41,013 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 20:22:41,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 20:22:41,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-11 20:22:41,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-11 20:22:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 20:22:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-11 20:22:41,020 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2024-11-11 20:22:41,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:22:41,020 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-11 20:22:41,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 20:22:41,020 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-11 20:22:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-11 20:22:41,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:22:41,020 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 20:22:41,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 20:22:41,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:22:41,223 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:22:41,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:22:41,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1781398469, now seen corresponding path program 1 times [2024-11-11 20:22:41,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:22:41,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215293485] [2024-11-11 20:22:41,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:22:41,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:22:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 20:22:41,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735895054] [2024-11-11 20:22:41,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:22:41,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:22:41,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:22:41,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 20:22:41,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 20:22:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:22:41,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-11 20:22:41,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:22:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 20:22:41,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 20:22:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 20:22:41,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:22:41,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215293485] [2024-11-11 20:22:41,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 20:22:41,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735895054] [2024-11-11 20:22:41,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735895054] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-11 20:22:41,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:22:41,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-11 20:22:41,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656768364] [2024-11-11 20:22:41,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:22:41,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 20:22:41,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:22:41,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 20:22:41,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-11 20:22:41,424 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-11 20:22:41,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:22:41,464 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-11 20:22:41,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 20:22:41,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-11 20:22:41,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:22:41,465 INFO L225 Difference]: With dead ends: 28 [2024-11-11 20:22:41,465 INFO L226 Difference]: Without dead ends: 23 [2024-11-11 20:22:41,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-11 20:22:41,466 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 20:22:41,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 44 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 20:22:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-11 20:22:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-11 20:22:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-11 20:22:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2024-11-11 20:22:41,474 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2024-11-11 20:22:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:22:41,475 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2024-11-11 20:22:41,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-11 20:22:41,477 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2024-11-11 20:22:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-11 20:22:41,477 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:22:41,479 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 20:22:41,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 20:22:41,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-11 20:22:41,680 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:22:41,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:22:41,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1711372296, now seen corresponding path program 1 times [2024-11-11 20:22:41,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:22:41,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428899123] [2024-11-11 20:22:41,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:22:41,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:22:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 20:22:41,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100295134] [2024-11-11 20:22:41,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:22:41,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:22:41,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:22:41,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 20:22:41,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 20:22:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:22:41,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-11 20:22:41,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:22:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 20:22:41,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 20:22:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 20:22:42,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:22:42,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428899123] [2024-11-11 20:22:42,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 20:22:42,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100295134] [2024-11-11 20:22:42,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100295134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 20:22:42,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-11 20:22:42,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-11-11 20:22:42,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956164962] [2024-11-11 20:22:42,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-11 20:22:42,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-11 20:22:42,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:22:42,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-11 20:22:42,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-11 20:22:42,162 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-11 20:22:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:22:42,298 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-11-11 20:22:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-11 20:22:42,299 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2024-11-11 20:22:42,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:22:42,299 INFO L225 Difference]: With dead ends: 42 [2024-11-11 20:22:42,300 INFO L226 Difference]: Without dead ends: 36 [2024-11-11 20:22:42,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-11 20:22:42,301 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:22:42,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 72 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:22:42,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-11 20:22:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-11 20:22:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-11 20:22:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-11 20:22:42,311 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 22 [2024-11-11 20:22:42,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:22:42,311 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-11 20:22:42,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-11 20:22:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-11 20:22:42,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-11 20:22:42,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:22:42,312 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 20:22:42,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-11 20:22:42,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:22:42,518 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:22:42,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:22:42,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1384689793, now seen corresponding path program 2 times [2024-11-11 20:22:42,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:22:42,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511728541] [2024-11-11 20:22:42,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:22:42,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:22:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-11 20:22:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881772605] [2024-11-11 20:22:42,547 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 20:22:42,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:22:42,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:22:42,550 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 20:22:42,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 20:22:42,599 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 20:22:42,599 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 20:22:42,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-11 20:22:42,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:22:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 20:22:42,784 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 20:22:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 20:22:43,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:22:43,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511728541] [2024-11-11 20:22:43,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-11 20:22:43,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881772605] [2024-11-11 20:22:43,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881772605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 20:22:43,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-11 20:22:43,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-11-11 20:22:43,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584399431] [2024-11-11 20:22:43,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-11 20:22:43,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-11 20:22:43,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:22:43,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-11 20:22:43,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-11 20:22:43,120 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 22 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 20:22:43,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:22:43,361 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2024-11-11 20:22:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-11 20:22:43,363 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 43 [2024-11-11 20:22:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:22:43,364 INFO L225 Difference]: With dead ends: 40 [2024-11-11 20:22:43,364 INFO L226 Difference]: Without dead ends: 0 [2024-11-11 20:22:43,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-11-11 20:22:43,365 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:22:43,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:22:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-11 20:22:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-11 20:22:43,366 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) [2024-11-11 20:22:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-11 20:22:43,366 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2024-11-11 20:22:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:22:43,369 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-11 20:22:43,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 20:22:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-11 20:22:43,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-11 20:22:43,371 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-11 20:22:43,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 20:22:43,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:22:43,574 INFO L421 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-11-11 20:22:43,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-11 20:22:43,772 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-11 20:22:43,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 08:22:43 BoogieIcfgContainer [2024-11-11 20:22:43,790 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-11 20:22:43,791 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-11 20:22:43,791 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-11 20:22:43,791 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-11 20:22:43,792 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 08:22:40" (3/4) ... [2024-11-11 20:22:43,793 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-11 20:22:43,796 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-11 20:22:43,798 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-11 20:22:43,799 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-11 20:22:43,799 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-11 20:22:43,799 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-11 20:22:43,872 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-11 20:22:43,872 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-11 20:22:43,872 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-11 20:22:43,873 INFO L158 Benchmark]: Toolchain (without parser) took 3878.03ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 145.8MB in the beginning and 120.1MB in the end (delta: 25.6MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2024-11-11 20:22:43,873 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 20:22:43,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.57ms. Allocated memory is still 174.1MB. Free memory was 145.1MB in the beginning and 132.7MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-11 20:22:43,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.32ms. Allocated memory is still 174.1MB. Free memory was 132.7MB in the beginning and 131.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-11 20:22:43,873 INFO L158 Benchmark]: Boogie Preprocessor took 23.40ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 129.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 20:22:43,874 INFO L158 Benchmark]: RCFGBuilder took 244.77ms. Allocated memory is still 174.1MB. Free memory was 129.9MB in the beginning and 141.0MB in the end (delta: -11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-11 20:22:43,874 INFO L158 Benchmark]: TraceAbstraction took 3296.93ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 140.3MB in the beginning and 125.4MB in the end (delta: 14.9MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. [2024-11-11 20:22:43,874 INFO L158 Benchmark]: Witness Printer took 81.68ms. Allocated memory is still 209.7MB. Free memory was 124.3MB in the beginning and 120.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-11 20:22:43,875 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.57ms. Allocated memory is still 174.1MB. Free memory was 145.1MB in the beginning and 132.7MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.32ms. Allocated memory is still 174.1MB. Free memory was 132.7MB in the beginning and 131.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.40ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 129.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 244.77ms. Allocated memory is still 174.1MB. Free memory was 129.9MB in the beginning and 141.0MB in the end (delta: -11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3296.93ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 140.3MB in the beginning and 125.4MB in the end (delta: 14.9MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. * Witness Printer took 81.68ms. Allocated memory is still 209.7MB. Free memory was 124.3MB in the beginning and 120.1MB 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: 12]: 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 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 342 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 269 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 275 IncrementalHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 73 mSDtfsCounter, 275 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 956 SizeOfPredicates, 8 NumberOfNonLiveVariables, 298 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 94/190 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: 27]: Loop Invariant Derived loop invariant: (((((y + ((__int128) y * y)) == (c + ((__int128) c * y))) && ((((__int128) 2 * c) + ((__int128) c * y)) == (((__int128) 2 * y) + ((__int128) y * y)))) && ((((__int128) k * y) == ((__int128) y * y)) || (c < k))) && (((((((__int128) y * y) * y) * 2) + ((((__int128) y * y) * y) * y)) + ((__int128) y * y)) == ((__int128) x * 4))) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-11 20:22:43,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE