./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/egcd-ll_valuebound2.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 e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 13:50:16,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 13:50:16,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 13:50:16,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 13:50:16,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 13:50:16,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 13:50:16,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 13:50:16,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 13:50:16,425 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 13:50:16,425 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 13:50:16,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 13:50:16,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 13:50:16,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 13:50:16,426 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 13:50:16,426 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 13:50:16,426 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 13:50:16,426 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 13:50:16,427 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 13:50:16,427 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 13:50:16,427 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 13:50:16,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 13:50:16,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 13:50:16,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 13:50:16,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 13:50:16,427 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 13:50:16,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 13:50:16,427 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 13:50:16,427 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 13:50:16,427 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 13:50:16,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 13:50:16,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 13:50:16,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 13:50:16,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:50:16,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 13:50:16,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 13:50:16,429 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 13:50:16,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 13:50:16,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 13:50:16,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 13:50:16,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 13:50:16,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 13:50:16,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 13:50:16,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 13:50:16,429 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 [2025-03-03 13:50:16,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 13:50:16,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 13:50:16,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 13:50:16,704 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 13:50:16,705 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 13:50:16,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2025-03-03 13:50:17,791 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d75efb427/1d23113020944b66af5a83ad74119ea7/FLAG97695ea01 [2025-03-03 13:50:17,986 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 13:50:17,991 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2025-03-03 13:50:18,003 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d75efb427/1d23113020944b66af5a83ad74119ea7/FLAG97695ea01 [2025-03-03 13:50:18,017 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d75efb427/1d23113020944b66af5a83ad74119ea7 [2025-03-03 13:50:18,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 13:50:18,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 13:50:18,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 13:50:18,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 13:50:18,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 13:50:18,028 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb851be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18, skipping insertion in model container [2025-03-03 13:50:18,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,040 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 13:50:18,153 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/egcd-ll_valuebound2.c[489,502] [2025-03-03 13:50:18,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:50:18,179 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 13:50:18,188 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/egcd-ll_valuebound2.c[489,502] [2025-03-03 13:50:18,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:50:18,205 INFO L204 MainTranslator]: Completed translation [2025-03-03 13:50:18,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18 WrapperNode [2025-03-03 13:50:18,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 13:50:18,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 13:50:18,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 13:50:18,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 13:50:18,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,226 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2025-03-03 13:50:18,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 13:50:18,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 13:50:18,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 13:50:18,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 13:50:18,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,236 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,243 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]. [2025-03-03 13:50:18,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,246 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,246 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 13:50:18,248 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 13:50:18,248 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 13:50:18,248 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 13:50:18,249 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (1/1) ... [2025-03-03 13:50:18,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:50:18,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:18,274 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) [2025-03-03 13:50:18,275 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 [2025-03-03 13:50:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 13:50:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 13:50:18,290 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 13:50:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 13:50:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 13:50:18,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 13:50:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-03 13:50:18,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-03 13:50:18,327 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 13:50:18,328 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 13:50:18,426 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-03-03 13:50:18,426 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 13:50:18,432 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 13:50:18,433 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 13:50:18,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:50:18 BoogieIcfgContainer [2025-03-03 13:50:18,433 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 13:50:18,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 13:50:18,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 13:50:18,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 13:50:18,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 01:50:18" (1/3) ... [2025-03-03 13:50:18,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b228ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:50:18, skipping insertion in model container [2025-03-03 13:50:18,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:18" (2/3) ... [2025-03-03 13:50:18,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b228ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:50:18, skipping insertion in model container [2025-03-03 13:50:18,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:50:18" (3/3) ... [2025-03-03 13:50:18,441 INFO L128 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2025-03-03 13:50:18,451 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 13:50:18,453 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG egcd-ll_valuebound2.c that has 3 procedures, 31 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 13:50:18,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 13:50:18,494 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;@15785323, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 13:50:18,494 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 13:50:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-03 13:50:18,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-03 13:50:18,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:18,503 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:18,503 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:18,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:18,508 INFO L85 PathProgramCache]: Analyzing trace with hash 296957627, now seen corresponding path program 1 times [2025-03-03 13:50:18,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:18,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356333312] [2025-03-03 13:50:18,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:18,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:18,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:50:18,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:50:18,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:18,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 13:50:18,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:18,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356333312] [2025-03-03 13:50:18,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356333312] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:18,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187575028] [2025-03-03 13:50:18,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:18,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:18,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:18,639 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) [2025-03-03 13:50:18,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 13:50:18,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:50:18,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:50:18,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:18,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:18,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 13:50:18,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 13:50:18,707 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:18,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187575028] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:18,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:50:18,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 13:50:18,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450234419] [2025-03-03 13:50:18,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:18,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 13:50:18,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:18,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 13:50:18,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 13:50:18,729 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-03 13:50:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:18,745 INFO L93 Difference]: Finished difference Result 59 states and 95 transitions. [2025-03-03 13:50:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 13:50:18,747 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2025-03-03 13:50:18,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:18,752 INFO L225 Difference]: With dead ends: 59 [2025-03-03 13:50:18,752 INFO L226 Difference]: Without dead ends: 27 [2025-03-03 13:50:18,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 13:50:18,758 INFO L435 NwaCegarLoop]: 41 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, 41 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 [2025-03-03 13:50:18,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-03-03 13:50:18,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-03-03 13:50:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-03 13:50:18,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2025-03-03 13:50:18,784 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 28 [2025-03-03 13:50:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:18,784 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2025-03-03 13:50:18,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-03 13:50:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2025-03-03 13:50:18,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-03 13:50:18,785 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:18,785 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:18,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 13:50:18,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-03 13:50:18,986 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:18,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:18,986 INFO L85 PathProgramCache]: Analyzing trace with hash 682285849, now seen corresponding path program 1 times [2025-03-03 13:50:18,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:18,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363120523] [2025-03-03 13:50:18,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:18,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:50:19,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:50:19,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:19,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:19,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121421617] [2025-03-03 13:50:19,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:19,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:19,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:19,030 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) [2025-03-03 13:50:19,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 13:50:19,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:50:19,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:50:19,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:19,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:19,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 13:50:19,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 13:50:19,150 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:19,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:19,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363120523] [2025-03-03 13:50:19,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:19,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121421617] [2025-03-03 13:50:19,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121421617] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:19,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:19,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:19,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496767116] [2025-03-03 13:50:19,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:19,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:19,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:19,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:19,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:19,152 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-03 13:50:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:19,215 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2025-03-03 13:50:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:19,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2025-03-03 13:50:19,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:19,216 INFO L225 Difference]: With dead ends: 42 [2025-03-03 13:50:19,216 INFO L226 Difference]: Without dead ends: 40 [2025-03-03 13:50:19,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:50:19,217 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:19,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 117 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-03-03 13:50:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2025-03-03 13:50:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-03 13:50:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2025-03-03 13:50:19,225 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 28 [2025-03-03 13:50:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:19,225 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2025-03-03 13:50:19,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-03 13:50:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2025-03-03 13:50:19,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-03 13:50:19,226 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:19,226 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:19,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 13:50:19,427 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,SelfDestructingSolverStorable1 [2025-03-03 13:50:19,427 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:19,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:19,427 INFO L85 PathProgramCache]: Analyzing trace with hash -806119642, now seen corresponding path program 1 times [2025-03-03 13:50:19,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:19,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647658795] [2025-03-03 13:50:19,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:19,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:19,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-03 13:50:19,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-03 13:50:19,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:19,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:19,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003329489] [2025-03-03 13:50:19,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:19,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:19,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:19,460 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) [2025-03-03 13:50:19,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 13:50:19,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-03 13:50:19,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-03 13:50:19,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:19,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:19,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 13:50:19,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 13:50:19,533 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:19,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:19,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647658795] [2025-03-03 13:50:19,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:19,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003329489] [2025-03-03 13:50:19,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003329489] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:19,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:19,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:19,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982534666] [2025-03-03 13:50:19,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:19,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:19,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:19,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:19,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:19,537 INFO L87 Difference]: Start difference. First operand 39 states and 56 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 13:50:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:19,601 INFO L93 Difference]: Finished difference Result 62 states and 94 transitions. [2025-03-03 13:50:19,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:19,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2025-03-03 13:50:19,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:19,605 INFO L225 Difference]: With dead ends: 62 [2025-03-03 13:50:19,606 INFO L226 Difference]: Without dead ends: 60 [2025-03-03 13:50:19,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:50:19,607 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:19,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 119 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-03-03 13:50:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2025-03-03 13:50:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 25 states have (on average 1.36) internal successors, (34), 27 states have internal predecessors, (34), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-03 13:50:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2025-03-03 13:50:19,619 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 33 [2025-03-03 13:50:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:19,620 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2025-03-03 13:50:19,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 13:50:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2025-03-03 13:50:19,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-03 13:50:19,621 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:19,621 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:19,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 13:50:19,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:19,825 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:19,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:19,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1523729273, now seen corresponding path program 1 times [2025-03-03 13:50:19,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:19,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082635856] [2025-03-03 13:50:19,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:19,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:19,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-03 13:50:19,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-03 13:50:19,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:19,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:19,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924605829] [2025-03-03 13:50:19,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:19,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:19,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:19,849 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) [2025-03-03 13:50:19,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 13:50:19,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-03 13:50:19,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-03 13:50:19,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:19,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:19,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 13:50:19,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-03 13:50:19,933 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:19,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:19,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082635856] [2025-03-03 13:50:19,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:19,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924605829] [2025-03-03 13:50:19,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924605829] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:19,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:19,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:19,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989379405] [2025-03-03 13:50:19,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:19,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:19,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:19,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:19,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:19,935 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-03 13:50:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:19,979 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2025-03-03 13:50:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:19,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2025-03-03 13:50:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:19,980 INFO L225 Difference]: With dead ends: 60 [2025-03-03 13:50:19,980 INFO L226 Difference]: Without dead ends: 56 [2025-03-03 13:50:19,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:50:19,981 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:19,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 118 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:19,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-03 13:50:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-03-03 13:50:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 30 states have internal predecessors, (37), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-03 13:50:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2025-03-03 13:50:19,990 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 38 [2025-03-03 13:50:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:19,990 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2025-03-03 13:50:19,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-03 13:50:19,991 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2025-03-03 13:50:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-03 13:50:19,991 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:19,991 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:19,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 13:50:20,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:20,192 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:20,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1024589713, now seen corresponding path program 1 times [2025-03-03 13:50:20,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:20,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641752032] [2025-03-03 13:50:20,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:20,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:20,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-03 13:50:20,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-03 13:50:20,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:20,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:20,360 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 13:50:20,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:20,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641752032] [2025-03-03 13:50:20,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641752032] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:20,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:20,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:20,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630140627] [2025-03-03 13:50:20,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:20,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:20,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:20,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:20,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:20,362 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-03 13:50:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:20,390 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2025-03-03 13:50:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:20,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2025-03-03 13:50:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:20,391 INFO L225 Difference]: With dead ends: 62 [2025-03-03 13:50:20,392 INFO L226 Difference]: Without dead ends: 60 [2025-03-03 13:50:20,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:50:20,392 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:20,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 128 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-03-03 13:50:20,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-03-03 13:50:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 33 states have internal predecessors, (40), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-03 13:50:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2025-03-03 13:50:20,399 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 44 [2025-03-03 13:50:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:20,400 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2025-03-03 13:50:20,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-03 13:50:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2025-03-03 13:50:20,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-03 13:50:20,400 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:20,400 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:20,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 13:50:20,401 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:20,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:20,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1697005566, now seen corresponding path program 1 times [2025-03-03 13:50:20,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:20,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086134227] [2025-03-03 13:50:20,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:20,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:20,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-03 13:50:20,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-03 13:50:20,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:20,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:20,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204110816] [2025-03-03 13:50:20,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:20,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:20,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:20,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:20,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 13:50:20,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-03 13:50:20,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-03 13:50:20,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:20,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:20,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-03 13:50:20,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-03 13:50:20,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:20,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:20,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086134227] [2025-03-03 13:50:20,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:20,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204110816] [2025-03-03 13:50:20,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204110816] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:20,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:20,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:20,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771747081] [2025-03-03 13:50:20,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:20,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:20,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:20,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:20,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:20,534 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 13:50:20,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:20,577 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2025-03-03 13:50:20,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:20,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2025-03-03 13:50:20,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:20,578 INFO L225 Difference]: With dead ends: 76 [2025-03-03 13:50:20,578 INFO L226 Difference]: Without dead ends: 74 [2025-03-03 13:50:20,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:50:20,579 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:20,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 117 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:20,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-03-03 13:50:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2025-03-03 13:50:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-03 13:50:20,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2025-03-03 13:50:20,589 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 45 [2025-03-03 13:50:20,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:20,589 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2025-03-03 13:50:20,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 13:50:20,589 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2025-03-03 13:50:20,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-03 13:50:20,590 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:20,590 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:20,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 13:50:20,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:20,791 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:20,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:20,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1630456210, now seen corresponding path program 1 times [2025-03-03 13:50:20,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:20,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093196325] [2025-03-03 13:50:20,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:20,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:20,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-03 13:50:20,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-03 13:50:20,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:20,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:21,021 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-03 13:50:21,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:21,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093196325] [2025-03-03 13:50:21,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093196325] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:21,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581720912] [2025-03-03 13:50:21,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:21,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:21,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:21,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:21,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 13:50:21,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-03 13:50:21,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-03 13:50:21,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:21,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:21,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-03 13:50:21,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 13:50:21,149 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:21,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581720912] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:21,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:50:21,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-03 13:50:21,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875202364] [2025-03-03 13:50:21,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:21,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 13:50:21,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:21,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 13:50:21,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-03 13:50:21,151 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 13:50:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:21,238 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2025-03-03 13:50:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 13:50:21,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2025-03-03 13:50:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:21,240 INFO L225 Difference]: With dead ends: 84 [2025-03-03 13:50:21,241 INFO L226 Difference]: Without dead ends: 80 [2025-03-03 13:50:21,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:50:21,242 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:21,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 142 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:50:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-03-03 13:50:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2025-03-03 13:50:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 43 states have (on average 1.186046511627907) internal successors, (51), 46 states have internal predecessors, (51), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-03 13:50:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2025-03-03 13:50:21,250 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 49 [2025-03-03 13:50:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:21,250 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2025-03-03 13:50:21,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 13:50:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2025-03-03 13:50:21,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-03 13:50:21,251 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:21,251 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:21,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 13:50:21,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:21,452 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:21,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:21,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1601374274, now seen corresponding path program 1 times [2025-03-03 13:50:21,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:21,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12485074] [2025-03-03 13:50:21,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:21,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:21,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-03 13:50:21,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-03 13:50:21,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:21,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:21,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848068914] [2025-03-03 13:50:21,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:21,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:21,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:21,465 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:21,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 13:50:21,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-03 13:50:21,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-03 13:50:21,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:21,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:21,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-03 13:50:21,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 13:50:21,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-03 13:50:21,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:21,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12485074] [2025-03-03 13:50:21,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:21,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848068914] [2025-03-03 13:50:21,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848068914] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:50:21,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 13:50:21,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2025-03-03 13:50:21,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738656349] [2025-03-03 13:50:21,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:21,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-03 13:50:21,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:21,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-03 13:50:21,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-03 13:50:21,871 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2025-03-03 13:50:22,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:22,291 INFO L93 Difference]: Finished difference Result 111 states and 149 transitions. [2025-03-03 13:50:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-03 13:50:22,292 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 50 [2025-03-03 13:50:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:22,293 INFO L225 Difference]: With dead ends: 111 [2025-03-03 13:50:22,294 INFO L226 Difference]: Without dead ends: 109 [2025-03-03 13:50:22,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-03-03 13:50:22,295 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:22,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 229 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 13:50:22,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-03-03 13:50:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2025-03-03 13:50:22,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 49 states have (on average 1.163265306122449) internal successors, (57), 52 states have internal predecessors, (57), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-03 13:50:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2025-03-03 13:50:22,327 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 50 [2025-03-03 13:50:22,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:22,328 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2025-03-03 13:50:22,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2025-03-03 13:50:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2025-03-03 13:50:22,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-03 13:50:22,328 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:22,328 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:22,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-03 13:50:22,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:22,534 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:22,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash -750050, now seen corresponding path program 2 times [2025-03-03 13:50:22,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:22,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068476653] [2025-03-03 13:50:22,535 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:50:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:22,539 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 2 equivalence classes. [2025-03-03 13:50:22,553 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-03-03 13:50:22,553 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:50:22,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:22,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890670032] [2025-03-03 13:50:22,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:50:22,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:22,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:22,556 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:22,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 13:50:22,577 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 2 equivalence classes. [2025-03-03 13:50:22,591 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-03-03 13:50:22,591 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:50:22,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:22,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-03 13:50:22,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-03 13:50:22,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-03 13:50:22,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:22,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068476653] [2025-03-03 13:50:22,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:22,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890670032] [2025-03-03 13:50:22,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890670032] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:50:22,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 13:50:22,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2025-03-03 13:50:22,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623084891] [2025-03-03 13:50:22,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:22,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 13:50:22,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:22,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 13:50:22,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-03 13:50:22,766 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-03 13:50:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:22,995 INFO L93 Difference]: Finished difference Result 110 states and 143 transitions. [2025-03-03 13:50:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 13:50:22,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 55 [2025-03-03 13:50:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:22,997 INFO L225 Difference]: With dead ends: 110 [2025-03-03 13:50:22,997 INFO L226 Difference]: Without dead ends: 92 [2025-03-03 13:50:22,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-03 13:50:22,998 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:22,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 147 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 13:50:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-03-03 13:50:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 79. [2025-03-03 13:50:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-03 13:50:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2025-03-03 13:50:23,012 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 55 [2025-03-03 13:50:23,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:23,012 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2025-03-03 13:50:23,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-03 13:50:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2025-03-03 13:50:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-03 13:50:23,013 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:23,013 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:23,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-03 13:50:23,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-03 13:50:23,214 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:23,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:23,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1705449702, now seen corresponding path program 1 times [2025-03-03 13:50:23,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:23,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648845517] [2025-03-03 13:50:23,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:23,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:23,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-03 13:50:23,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-03 13:50:23,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:23,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-03 13:50:23,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:23,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648845517] [2025-03-03 13:50:23,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648845517] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:23,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430908537] [2025-03-03 13:50:23,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:23,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:23,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:23,354 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:23,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 13:50:23,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-03 13:50:23,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-03 13:50:23,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:23,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:23,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 13:50:23,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-03 13:50:23,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-03 13:50:23,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430908537] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:50:23,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:50:23,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2025-03-03 13:50:23,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440180578] [2025-03-03 13:50:23,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:23,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 13:50:23,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:23,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 13:50:23,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-03-03 13:50:23,554 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2025-03-03 13:50:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:23,676 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2025-03-03 13:50:23,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 13:50:23,677 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) Word has length 62 [2025-03-03 13:50:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:23,677 INFO L225 Difference]: With dead ends: 105 [2025-03-03 13:50:23,677 INFO L226 Difference]: Without dead ends: 79 [2025-03-03 13:50:23,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2025-03-03 13:50:23,678 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:23,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 256 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:50:23,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-03-03 13:50:23,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2025-03-03 13:50:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.108695652173913) internal successors, (51), 48 states have internal predecessors, (51), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-03 13:50:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2025-03-03 13:50:23,694 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 62 [2025-03-03 13:50:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:23,694 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2025-03-03 13:50:23,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2025-03-03 13:50:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2025-03-03 13:50:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-03 13:50:23,695 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:23,695 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:23,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-03 13:50:23,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-03 13:50:23,900 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:23,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:23,900 INFO L85 PathProgramCache]: Analyzing trace with hash 550537784, now seen corresponding path program 2 times [2025-03-03 13:50:23,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:23,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193758809] [2025-03-03 13:50:23,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:50:23,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:23,904 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 62 statements into 2 equivalence classes. [2025-03-03 13:50:23,916 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 62 of 62 statements. [2025-03-03 13:50:23,916 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:50:23,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-03-03 13:50:24,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:24,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193758809] [2025-03-03 13:50:24,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193758809] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:24,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536367594] [2025-03-03 13:50:24,256 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:50:24,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:24,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:24,258 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:24,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 13:50:24,279 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 62 statements into 2 equivalence classes. [2025-03-03 13:50:24,292 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 62 of 62 statements. [2025-03-03 13:50:24,292 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:50:24,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:24,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 13:50:24,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-03 13:50:24,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-03 13:50:24,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536367594] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:50:24,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:50:24,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 18 [2025-03-03 13:50:24,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504130196] [2025-03-03 13:50:24,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:24,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-03 13:50:24,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:24,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-03 13:50:24,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2025-03-03 13:50:24,468 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 11 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2025-03-03 13:50:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:24,698 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2025-03-03 13:50:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-03 13:50:24,698 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 11 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 62 [2025-03-03 13:50:24,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:24,699 INFO L225 Difference]: With dead ends: 97 [2025-03-03 13:50:24,699 INFO L226 Difference]: Without dead ends: 56 [2025-03-03 13:50:24,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2025-03-03 13:50:24,700 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:24,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 217 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:50:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-03 13:50:24,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2025-03-03 13:50:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-03 13:50:24,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2025-03-03 13:50:24,705 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 62 [2025-03-03 13:50:24,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:24,706 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2025-03-03 13:50:24,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 11 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2025-03-03 13:50:24,706 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2025-03-03 13:50:24,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-03 13:50:24,706 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:24,707 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:24,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-03 13:50:24,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-03 13:50:24,910 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:24,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash 501411722, now seen corresponding path program 1 times [2025-03-03 13:50:24,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:24,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650861361] [2025-03-03 13:50:24,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:24,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:24,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 13:50:24,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 13:50:24,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:24,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-03 13:50:25,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650861361] [2025-03-03 13:50:25,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650861361] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336149971] [2025-03-03 13:50:25,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:25,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:25,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:25,041 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:25,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-03 13:50:25,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 13:50:25,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 13:50:25,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:25,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:25,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 13:50:25,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-03 13:50:25,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-03 13:50:25,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336149971] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:50:25,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:50:25,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2025-03-03 13:50:25,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948145999] [2025-03-03 13:50:25,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:25,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 13:50:25,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:25,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 13:50:25,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-03 13:50:25,185 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-03 13:50:25,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:25,251 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2025-03-03 13:50:25,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 13:50:25,251 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 66 [2025-03-03 13:50:25,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:25,252 INFO L225 Difference]: With dead ends: 55 [2025-03-03 13:50:25,252 INFO L226 Difference]: Without dead ends: 0 [2025-03-03 13:50:25,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:50:25,252 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:25,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 138 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-03 13:50:25,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-03 13:50:25,253 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) [2025-03-03 13:50:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-03 13:50:25,253 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2025-03-03 13:50:25,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:25,253 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-03 13:50:25,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-03 13:50:25,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-03 13:50:25,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-03 13:50:25,255 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 13:50:25,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-03 13:50:25,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-03 13:50:25,459 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:25,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-03 13:50:26,633 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 13:50:26,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 01:50:26 BoogieIcfgContainer [2025-03-03 13:50:26,650 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 13:50:26,651 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 13:50:26,651 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 13:50:26,651 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 13:50:26,651 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:50:18" (3/4) ... [2025-03-03 13:50:26,653 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-03 13:50:26,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-03-03 13:50:26,657 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-03-03 13:50:26,661 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-03 13:50:26,661 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-03 13:50:26,661 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-03 13:50:26,661 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-03 13:50:26,718 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-03 13:50:26,718 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-03 13:50:26,718 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 13:50:26,718 INFO L158 Benchmark]: Toolchain (without parser) took 8696.43ms. Allocated memory is still 201.3MB. Free memory was 154.5MB in the beginning and 125.8MB in the end (delta: 28.7MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2025-03-03 13:50:26,719 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:50:26,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.80ms. Allocated memory is still 201.3MB. Free memory was 154.5MB in the beginning and 143.3MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:50:26,719 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.03ms. Allocated memory is still 201.3MB. Free memory was 143.3MB in the beginning and 141.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:50:26,719 INFO L158 Benchmark]: Boogie Preprocessor took 20.24ms. Allocated memory is still 201.3MB. Free memory was 141.9MB in the beginning and 141.0MB in the end (delta: 860.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:50:26,720 INFO L158 Benchmark]: IcfgBuilder took 184.96ms. Allocated memory is still 201.3MB. Free memory was 140.7MB in the beginning and 128.2MB in the end (delta: 12.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 13:50:26,720 INFO L158 Benchmark]: TraceAbstraction took 8215.12ms. Allocated memory is still 201.3MB. Free memory was 127.6MB in the beginning and 131.9MB in the end (delta: -4.3MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. [2025-03-03 13:50:26,720 INFO L158 Benchmark]: Witness Printer took 67.36ms. Allocated memory is still 201.3MB. Free memory was 131.9MB in the beginning and 125.8MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:50:26,721 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.80ms. Allocated memory is still 201.3MB. Free memory was 154.5MB in the beginning and 143.3MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.03ms. Allocated memory is still 201.3MB. Free memory was 143.3MB in the beginning and 141.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.24ms. Allocated memory is still 201.3MB. Free memory was 141.9MB in the beginning and 141.0MB in the end (delta: 860.7kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 184.96ms. Allocated memory is still 201.3MB. Free memory was 140.7MB in the beginning and 128.2MB in the end (delta: 12.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8215.12ms. Allocated memory is still 201.3MB. Free memory was 127.6MB in the beginning and 131.9MB in the end (delta: -4.3MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. * Witness Printer took 67.36ms. Allocated memory is still 201.3MB. Free memory was 131.9MB in the beginning and 125.8MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. 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: 13]: 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 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 12, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 102 mSDsluCounter, 1769 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1391 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 894 IncrementalHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 378 mSDtfsCounter, 894 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 868 GetRequests, 752 SyntacticMatches, 11 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=8, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 48 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1076 NumberOfCodeBlocks, 1076 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2889 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1312 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 1448/1593 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Location Invariant Derived location invariant: ((((((((((((0 <= x) && (p == 1)) && (1 <= y)) && (b == y)) && (b <= 2)) && (r == 0)) && (q == 0)) && (a == x)) && (x <= 2)) && (s == 1)) || ((((((((((0 <= x) && (p == 1)) && (y <= 2)) && (a <= 1)) && (((((__int128) r * y) + b) + ((__int128) p * x)) == ((a + ((__int128) s * y)) + ((__int128) q * x)))) && (1 <= b)) && (r == 0)) && ((2 == y) || (a < 1))) && (a == x)) && (s == 1))) || ((((((((((0 <= x) && (p == 1)) && (1 <= y)) && (b <= 1)) && (((((__int128) r * y) + b) + ((__int128) p * x)) == ((a + ((__int128) s * y)) + ((__int128) q * x)))) && ((((__int128) r * y) + x) == a)) && (q == 0)) && (1 <= a)) && (x <= 2)) && (s == 1))) RESULT: Ultimate proved your program to be correct! [2025-03-03 13:50:26,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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