./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 419067b5ad1c50d11f0cfbab5d6575c99441963cff6e7f0dfff88e7c41e5907f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 18:30:41,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 18:30:41,300 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-03 18:30:41,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 18:30:41,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 18:30:41,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 18:30:41,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 18:30:41,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 18:30:41,320 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 18:30:41,321 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 18:30:41,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 18:30:41,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 18:30:41,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 18:30:41,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 18:30:41,322 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 18:30:41,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 18:30:41,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 18:30:41,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 18:30:41,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 18:30:41,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 18:30:41,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 18:30:41,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 18:30:41,323 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 18:30:41,323 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 18:30:41,323 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 18:30:41,323 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 18:30:41,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 18:30:41,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 18:30:41,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 18:30:41,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 18:30:41,324 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 18:30:41,324 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 18:30:41,324 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 18:30:41,324 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 18:30:41,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 18:30:41,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 18:30:41,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 18:30:41,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 18:30:41,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 18:30:41,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 18:30:41,324 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 419067b5ad1c50d11f0cfbab5d6575c99441963cff6e7f0dfff88e7c41e5907f [2025-03-03 18:30:41,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 18:30:41,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 18:30:41,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 18:30:41,556 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 18:30:41,556 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 18:30:41,558 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2025-03-03 18:30:42,673 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f552975/7d4d2238b0704586bd812cc27c721407/FLAG16c0761b7 [2025-03-03 18:30:42,936 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 18:30:42,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2025-03-03 18:30:42,951 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f552975/7d4d2238b0704586bd812cc27c721407/FLAG16c0761b7 [2025-03-03 18:30:43,237 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f552975/7d4d2238b0704586bd812cc27c721407 [2025-03-03 18:30:43,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 18:30:43,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 18:30:43,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 18:30:43,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 18:30:43,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 18:30:43,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:43,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577f00f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43, skipping insertion in model container [2025-03-03 18:30:43,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:43,288 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 18:30:43,422 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1262,1275] [2025-03-03 18:30:43,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 18:30:43,693 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 18:30:43,699 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1262,1275] [2025-03-03 18:30:43,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 18:30:43,847 INFO L204 MainTranslator]: Completed translation [2025-03-03 18:30:43,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43 WrapperNode [2025-03-03 18:30:43,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 18:30:43,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 18:30:43,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 18:30:43,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 18:30:43,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:43,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:44,129 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3317 [2025-03-03 18:30:44,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 18:30:44,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 18:30:44,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 18:30:44,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 18:30:44,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:44,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:44,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:44,276 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 18:30:44,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:44,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:44,358 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:44,390 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:44,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:44,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:44,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 18:30:44,487 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 18:30:44,487 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 18:30:44,488 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 18:30:44,489 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (1/1) ... [2025-03-03 18:30:44,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 18:30:44,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 18:30:44,514 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 18:30:44,516 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 18:30:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 18:30:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 18:30:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 18:30:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 18:30:44,842 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 18:30:44,843 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 18:30:46,729 INFO L? ?]: Removed 2308 outVars from TransFormulas that were not future-live. [2025-03-03 18:30:46,730 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 18:30:46,931 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 18:30:46,931 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 18:30:46,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:30:46 BoogieIcfgContainer [2025-03-03 18:30:46,932 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 18:30:46,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 18:30:46,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 18:30:46,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 18:30:46,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 06:30:43" (1/3) ... [2025-03-03 18:30:46,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18488db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:30:46, skipping insertion in model container [2025-03-03 18:30:46,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:43" (2/3) ... [2025-03-03 18:30:46,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18488db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:30:46, skipping insertion in model container [2025-03-03 18:30:46,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:30:46" (3/3) ... [2025-03-03 18:30:46,942 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_bufferAlloc.c [2025-03-03 18:30:46,954 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 18:30:46,956 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_arrays_bufferAlloc.c that has 1 procedures, 710 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 18:30:47,017 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 18:30:47,028 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;@36f111cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 18:30:47,029 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 18:30:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 710 states, 708 states have (on average 1.4985875706214689) internal successors, (1061), 709 states have internal predecessors, (1061), 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 18:30:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-03 18:30:47,041 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:30:47,041 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:47,042 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:30:47,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:30:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash -244413515, now seen corresponding path program 1 times [2025-03-03 18:30:47,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:30:47,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312075047] [2025-03-03 18:30:47,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:30:47,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:30:47,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-03 18:30:47,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-03 18:30:47,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:30:47,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:30:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:30:47,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:30:47,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312075047] [2025-03-03 18:30:47,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312075047] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:30:47,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:30:47,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 18:30:47,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064003049] [2025-03-03 18:30:47,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:30:47,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 18:30:47,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:30:47,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 18:30:47,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:30:47,628 INFO L87 Difference]: Start difference. First operand has 710 states, 708 states have (on average 1.4985875706214689) internal successors, (1061), 709 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 18:30:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:30:48,025 INFO L93 Difference]: Finished difference Result 1337 states and 2001 transitions. [2025-03-03 18:30:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 18:30:48,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-03-03 18:30:48,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:30:48,037 INFO L225 Difference]: With dead ends: 1337 [2025-03-03 18:30:48,039 INFO L226 Difference]: Without dead ends: 709 [2025-03-03 18:30:48,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:30:48,047 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 0 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 18:30:48,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2635 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 18:30:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2025-03-03 18:30:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2025-03-03 18:30:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 1.4957627118644068) internal successors, (1059), 708 states have internal predecessors, (1059), 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 18:30:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1059 transitions. [2025-03-03 18:30:48,113 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1059 transitions. Word has length 51 [2025-03-03 18:30:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:30:48,113 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 1059 transitions. [2025-03-03 18:30:48,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 18:30:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1059 transitions. [2025-03-03 18:30:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-03 18:30:48,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:30:48,115 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:48,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 18:30:48,115 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:30:48,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:30:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1017795836, now seen corresponding path program 1 times [2025-03-03 18:30:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:30:48,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943674903] [2025-03-03 18:30:48,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:30:48,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:30:48,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-03 18:30:48,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-03 18:30:48,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:30:48,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:30:48,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:30:48,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:30:48,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943674903] [2025-03-03 18:30:48,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943674903] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:30:48,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:30:48,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 18:30:48,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938218144] [2025-03-03 18:30:48,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:30:48,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 18:30:48,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:30:48,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 18:30:48,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:30:48,378 INFO L87 Difference]: Start difference. First operand 709 states and 1059 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 18:30:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:30:48,694 INFO L93 Difference]: Finished difference Result 1338 states and 1999 transitions. [2025-03-03 18:30:48,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 18:30:48,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-03-03 18:30:48,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:30:48,697 INFO L225 Difference]: With dead ends: 1338 [2025-03-03 18:30:48,697 INFO L226 Difference]: Without dead ends: 711 [2025-03-03 18:30:48,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:30:48,699 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 0 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 18:30:48,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2632 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 18:30:48,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2025-03-03 18:30:48,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2025-03-03 18:30:48,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 1.4943661971830986) internal successors, (1061), 710 states have internal predecessors, (1061), 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 18:30:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1061 transitions. [2025-03-03 18:30:48,724 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1061 transitions. Word has length 52 [2025-03-03 18:30:48,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:30:48,724 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 1061 transitions. [2025-03-03 18:30:48,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 18:30:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1061 transitions. [2025-03-03 18:30:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-03 18:30:48,725 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:30:48,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:48,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 18:30:48,727 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:30:48,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:30:48,730 INFO L85 PathProgramCache]: Analyzing trace with hash -876557168, now seen corresponding path program 1 times [2025-03-03 18:30:48,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:30:48,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391989354] [2025-03-03 18:30:48,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:30:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:30:48,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-03 18:30:48,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-03 18:30:48,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:30:48,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:30:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:30:49,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 18:30:49,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391989354] [2025-03-03 18:30:49,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391989354] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:30:49,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:30:49,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 18:30:49,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981100913] [2025-03-03 18:30:49,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:30:49,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 18:30:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 18:30:49,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 18:30:49,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 18:30:49,033 INFO L87 Difference]: Start difference. First operand 711 states and 1061 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 18:30:49,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:30:49,514 INFO L93 Difference]: Finished difference Result 1338 states and 1998 transitions. [2025-03-03 18:30:49,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 18:30:49,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-03-03 18:30:49,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:30:49,517 INFO L225 Difference]: With dead ends: 1338 [2025-03-03 18:30:49,518 INFO L226 Difference]: Without dead ends: 709 [2025-03-03 18:30:49,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-03 18:30:49,520 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 1013 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 18:30:49,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 2550 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 18:30:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2025-03-03 18:30:49,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2025-03-03 18:30:49,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 1.4929378531073447) internal successors, (1057), 708 states have internal predecessors, (1057), 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 18:30:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1057 transitions. [2025-03-03 18:30:49,539 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1057 transitions. Word has length 53 [2025-03-03 18:30:49,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:30:49,540 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 1057 transitions. [2025-03-03 18:30:49,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 18:30:49,541 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1057 transitions. [2025-03-03 18:30:49,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-03-03 18:30:49,543 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:30:49,543 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:49,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 18:30:49,544 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:30:49,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:30:49,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1015418208, now seen corresponding path program 1 times [2025-03-03 18:30:49,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 18:30:49,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581547738] [2025-03-03 18:30:49,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:30:49,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 18:30:49,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-03 18:30:49,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-03 18:30:49,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:30:49,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 18:30:49,597 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 18:30:49,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-03 18:30:49,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-03 18:30:49,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:30:49,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 18:30:49,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-03 18:30:49,684 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 18:30:49,684 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 18:30:49,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 18:30:49,688 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-03 18:30:49,721 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-03 18:30:49,731 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 18:30:49,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 06:30:49 BoogieIcfgContainer [2025-03-03 18:30:49,736 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 18:30:49,737 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 18:30:49,737 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 18:30:49,737 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 18:30:49,738 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:30:46" (3/4) ... [2025-03-03 18:30:49,739 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-03 18:30:49,740 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 18:30:49,741 INFO L158 Benchmark]: Toolchain (without parser) took 6500.38ms. Allocated memory was 142.6MB in the beginning and 939.5MB in the end (delta: 796.9MB). Free memory was 109.8MB in the beginning and 794.7MB in the end (delta: -684.9MB). Peak memory consumption was 111.6MB. Max. memory is 16.1GB. [2025-03-03 18:30:49,741 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 18:30:49,742 INFO L158 Benchmark]: CACSL2BoogieTranslator took 608.08ms. Allocated memory is still 142.6MB. Free memory was 109.8MB in the beginning and 94.3MB in the end (delta: 15.5MB). Peak memory consumption was 96.0MB. Max. memory is 16.1GB. [2025-03-03 18:30:49,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 280.75ms. Allocated memory was 142.6MB in the beginning and 151.0MB in the end (delta: 8.4MB). Free memory was 94.3MB in the beginning and 55.7MB in the end (delta: 38.7MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. [2025-03-03 18:30:49,742 INFO L158 Benchmark]: Boogie Preprocessor took 356.04ms. Allocated memory was 151.0MB in the beginning and 343.9MB in the end (delta: 192.9MB). Free memory was 55.7MB in the beginning and 244.7MB in the end (delta: -189.0MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2025-03-03 18:30:49,742 INFO L158 Benchmark]: IcfgBuilder took 2444.25ms. Allocated memory was 343.9MB in the beginning and 335.5MB in the end (delta: -8.4MB). Free memory was 244.7MB in the beginning and 207.8MB in the end (delta: 36.9MB). Peak memory consumption was 152.8MB. Max. memory is 16.1GB. [2025-03-03 18:30:49,743 INFO L158 Benchmark]: TraceAbstraction took 2803.14ms. Allocated memory was 335.5MB in the beginning and 939.5MB in the end (delta: 604.0MB). Free memory was 207.8MB in the beginning and 794.8MB in the end (delta: -586.9MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2025-03-03 18:30:49,743 INFO L158 Benchmark]: Witness Printer took 3.34ms. Allocated memory is still 939.5MB. Free memory was 794.8MB in the beginning and 794.7MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 18:30:49,745 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 128.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 608.08ms. Allocated memory is still 142.6MB. Free memory was 109.8MB in the beginning and 94.3MB in the end (delta: 15.5MB). Peak memory consumption was 96.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 280.75ms. Allocated memory was 142.6MB in the beginning and 151.0MB in the end (delta: 8.4MB). Free memory was 94.3MB in the beginning and 55.7MB in the end (delta: 38.7MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 356.04ms. Allocated memory was 151.0MB in the beginning and 343.9MB in the end (delta: 192.9MB). Free memory was 55.7MB in the beginning and 244.7MB in the end (delta: -189.0MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * IcfgBuilder took 2444.25ms. Allocated memory was 343.9MB in the beginning and 335.5MB in the end (delta: -8.4MB). Free memory was 244.7MB in the beginning and 207.8MB in the end (delta: 36.9MB). Peak memory consumption was 152.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2803.14ms. Allocated memory was 335.5MB in the beginning and 939.5MB in the end (delta: 604.0MB). Free memory was 207.8MB in the beginning and 794.8MB in the end (delta: -586.9MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Witness Printer took 3.34ms. Allocated memory is still 939.5MB. Free memory was 794.8MB in the beginning and 794.7MB in the end (delta: 25.4kB). There was no memory consumed. 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 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 151. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L32] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L33] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L35] const SORT_22 mask_SORT_22 = (SORT_22)-1 >> (sizeof(SORT_22) * 8 - 32); [L36] const SORT_22 msb_SORT_22 = (SORT_22)1 << (32 - 1); [L38] const SORT_7 var_8 = 0; [L39] const SORT_7 var_11 = 16; [L40] const SORT_1 var_15 = 1; [L41] const SORT_1 var_19 = 0; [L42] const SORT_22 var_23 = 0; [L43] const SORT_22 var_24 = 15; [L44] const SORT_22 var_74 = 14; [L45] const SORT_22 var_92 = 13; [L46] const SORT_22 var_110 = 12; [L47] const SORT_22 var_128 = 11; [L48] const SORT_22 var_146 = 10; [L49] const SORT_22 var_164 = 9; [L50] const SORT_22 var_182 = 8; [L51] const SORT_22 var_200 = 7; [L52] const SORT_22 var_218 = 6; [L53] const SORT_22 var_236 = 5; [L54] const SORT_22 var_254 = 4; [L55] const SORT_22 var_272 = 3; [L56] const SORT_22 var_290 = 2; [L57] const SORT_22 var_308 = 1; [L58] const SORT_4 var_347 = 0; [L59] const SORT_22 var_351 = 16; [L61] SORT_1 input_2; [L62] SORT_1 input_3; [L63] SORT_4 input_5; [L64] SORT_1 input_6; [L65] SORT_1 input_386; [L66] SORT_4 input_388; [L67] SORT_1 input_404; [L68] SORT_4 input_408; [L70] EXPR __VERIFIER_nondet_uchar() & mask_SORT_7 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L70] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L71] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L71] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L72] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L73] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L74] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L75] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L76] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L77] SORT_1 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L78] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L79] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L80] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L81] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L82] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L83] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L84] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L85] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L86] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L87] SORT_1 state_66 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_4=15, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L88] SORT_1 state_345 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_7=31, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L89] SORT_4 state_348 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L91] SORT_7 init_10_arg_1 = var_8; [L92] state_9 = init_10_arg_1 [L93] SORT_1 init_21_arg_1 = var_19; [L94] state_20 = init_21_arg_1 [L95] SORT_1 init_26_arg_1 = var_19; [L96] state_25 = init_26_arg_1 [L97] SORT_1 init_28_arg_1 = var_19; [L98] state_27 = init_28_arg_1 [L99] SORT_1 init_31_arg_1 = var_19; [L100] state_30 = init_31_arg_1 [L101] SORT_1 init_33_arg_1 = var_19; [L102] state_32 = init_33_arg_1 [L103] SORT_1 init_37_arg_1 = var_19; [L104] state_36 = init_37_arg_1 [L105] SORT_1 init_39_arg_1 = var_19; [L106] state_38 = init_39_arg_1 [L107] SORT_1 init_42_arg_1 = var_19; [L108] state_41 = init_42_arg_1 [L109] SORT_1 init_44_arg_1 = var_19; [L110] state_43 = init_44_arg_1 [L111] SORT_1 init_49_arg_1 = var_19; [L112] state_48 = init_49_arg_1 [L113] SORT_1 init_51_arg_1 = var_19; [L114] state_50 = init_51_arg_1 [L115] SORT_1 init_54_arg_1 = var_19; [L116] state_53 = init_54_arg_1 [L117] SORT_1 init_56_arg_1 = var_19; [L118] state_55 = init_56_arg_1 [L119] SORT_1 init_60_arg_1 = var_19; [L120] state_59 = init_60_arg_1 [L121] SORT_1 init_62_arg_1 = var_19; [L122] state_61 = init_62_arg_1 [L123] SORT_1 init_65_arg_1 = var_19; [L124] state_64 = init_65_arg_1 [L125] SORT_1 init_67_arg_1 = var_19; [L126] state_66 = init_67_arg_1 [L127] SORT_1 init_346_arg_1 = var_19; [L128] state_345 = init_346_arg_1 [L129] SORT_4 init_349_arg_1 = var_347; [L130] state_348 = init_349_arg_1 VAL [mask_SORT_1=1, mask_SORT_7=31, state_20=0, state_25=0, state_27=0, state_30=0, state_32=0, state_345=0, state_348=0, state_36=0, state_38=0, state_41=0, state_43=0, state_48=0, state_50=0, state_53=0, state_55=0, state_59=0, state_61=0, state_64=0, state_66=0, state_9=0, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_92=13] [L133] input_2 = __VERIFIER_nondet_uchar() [L134] input_3 = __VERIFIER_nondet_uchar() [L135] input_5 = __VERIFIER_nondet_uchar() [L136] input_6 = __VERIFIER_nondet_uchar() [L137] EXPR input_6 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_7=31, state_20=0, state_25=0, state_27=0, state_30=0, state_32=0, state_345=0, state_348=0, state_36=0, state_38=0, state_41=0, state_43=0, state_48=0, state_50=0, state_53=0, state_55=0, state_59=0, state_61=0, state_64=0, state_66=0, state_9=0, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_92=13] [L137] input_6 = input_6 & mask_SORT_1 [L138] input_386 = __VERIFIER_nondet_uchar() [L139] input_388 = __VERIFIER_nondet_uchar() [L140] input_404 = __VERIFIER_nondet_uchar() [L141] input_408 = __VERIFIER_nondet_uchar() [L144] SORT_7 var_12_arg_0 = state_9; [L145] SORT_7 var_12_arg_1 = var_11; [L146] SORT_1 var_12 = var_12_arg_0 <= var_12_arg_1; [L147] SORT_1 var_16_arg_0 = var_12; [L148] SORT_1 var_16 = ~var_16_arg_0; [L149] SORT_1 var_17_arg_0 = var_15; [L150] SORT_1 var_17_arg_1 = var_16; VAL [input_6=0, mask_SORT_1=1, mask_SORT_7=31, state_20=0, state_25=0, state_27=0, state_30=0, state_32=0, state_345=0, state_348=0, state_36=0, state_38=0, state_41=0, state_43=0, state_48=0, state_50=0, state_53=0, state_55=0, state_59=0, state_61=0, state_64=0, state_66=0, state_9=0, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_17_arg_0=1, var_17_arg_1=-2, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_92=13] [L151] EXPR var_17_arg_0 & var_17_arg_1 VAL [input_6=0, mask_SORT_1=1, mask_SORT_7=31, state_20=0, state_25=0, state_27=0, state_30=0, state_32=0, state_345=0, state_348=0, state_36=0, state_38=0, state_41=0, state_43=0, state_48=0, state_50=0, state_53=0, state_55=0, state_59=0, state_61=0, state_64=0, state_66=0, state_9=0, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_92=13] [L151] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L152] EXPR var_17 & mask_SORT_1 VAL [input_6=0, mask_SORT_1=1, mask_SORT_7=31, state_20=0, state_25=0, state_27=0, state_30=0, state_32=0, state_345=0, state_348=0, state_36=0, state_38=0, state_41=0, state_43=0, state_48=0, state_50=0, state_53=0, state_55=0, state_59=0, state_61=0, state_64=0, state_66=0, state_9=0, var_110=12, var_11=16, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_236=5, var_23=0, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_92=13] [L152] var_17 = var_17 & mask_SORT_1 [L153] SORT_1 bad_18_arg_0 = var_17; [L154] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 710 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1013 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1013 mSDsluCounter, 7817 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5206 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1683 IncrementalHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 2611 mSDtfsCounter, 1683 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=711occurred in iteration=2, InterpolantAutomatonStates: 12, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 270 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-03 18:30:49,764 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 64bit --witnessprinter.graph.data.programhash 419067b5ad1c50d11f0cfbab5d6575c99441963cff6e7f0dfff88e7c41e5907f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 18:30:51,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 18:30:51,647 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-03-03 18:30:51,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 18:30:51,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 18:30:51,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 18:30:51,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 18:30:51,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 18:30:51,681 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 18:30:51,681 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 18:30:51,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 18:30:51,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 18:30:51,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 18:30:51,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 18:30:51,683 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 18:30:51,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 18:30:51,683 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 18:30:51,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 18:30:51,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 18:30:51,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 18:30:51,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 18:30:51,683 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-03 18:30:51,684 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-03 18:30:51,684 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-03 18:30:51,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 18:30:51,684 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 18:30:51,684 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 18:30:51,684 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 18:30:51,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 18:30:51,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 18:30:51,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 18:30:51,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 18:30:51,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 18:30:51,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 18:30:51,685 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 18:30:51,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 18:30:51,685 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-03 18:30:51,685 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-03 18:30:51,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 18:30:51,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 18:30:51,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 18:30:51,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 18:30:51,686 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 419067b5ad1c50d11f0cfbab5d6575c99441963cff6e7f0dfff88e7c41e5907f [2025-03-03 18:30:51,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 18:30:51,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 18:30:51,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 18:30:51,924 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 18:30:51,924 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 18:30:51,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2025-03-03 18:30:53,109 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb1dea5c1/ea2c86c3ecb14a60b6fc62103e9527db/FLAGb8474366b [2025-03-03 18:30:53,448 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 18:30:53,450 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2025-03-03 18:30:53,464 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb1dea5c1/ea2c86c3ecb14a60b6fc62103e9527db/FLAGb8474366b [2025-03-03 18:30:53,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb1dea5c1/ea2c86c3ecb14a60b6fc62103e9527db [2025-03-03 18:30:53,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 18:30:53,693 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 18:30:53,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 18:30:53,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 18:30:53,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 18:30:53,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 06:30:53" (1/1) ... [2025-03-03 18:30:53,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dfc3084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:53, skipping insertion in model container [2025-03-03 18:30:53,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 06:30:53" (1/1) ... [2025-03-03 18:30:53,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 18:30:53,894 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1262,1275] [2025-03-03 18:30:54,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 18:30:54,114 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 18:30:54,121 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1262,1275] [2025-03-03 18:30:54,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 18:30:54,249 INFO L204 MainTranslator]: Completed translation [2025-03-03 18:30:54,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54 WrapperNode [2025-03-03 18:30:54,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 18:30:54,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 18:30:54,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 18:30:54,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 18:30:54,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,284 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,367 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1917 [2025-03-03 18:30:54,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 18:30:54,367 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 18:30:54,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 18:30:54,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 18:30:54,375 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,426 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 18:30:54,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,472 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 18:30:54,515 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 18:30:54,516 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 18:30:54,516 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 18:30:54,517 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (1/1) ... [2025-03-03 18:30:54,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 18:30:54,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 18:30:54,547 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 18:30:54,550 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 18:30:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 18:30:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-03 18:30:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 18:30:54,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 18:30:54,899 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 18:30:54,900 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 18:30:59,797 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2025-03-03 18:30:59,797 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 18:30:59,804 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 18:30:59,805 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 18:30:59,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:30:59 BoogieIcfgContainer [2025-03-03 18:30:59,806 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 18:30:59,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 18:30:59,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 18:30:59,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 18:30:59,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 06:30:53" (1/3) ... [2025-03-03 18:30:59,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6cfe27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:30:59, skipping insertion in model container [2025-03-03 18:30:59,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 06:30:54" (2/3) ... [2025-03-03 18:30:59,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6cfe27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:30:59, skipping insertion in model container [2025-03-03 18:30:59,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 06:30:59" (3/3) ... [2025-03-03 18:30:59,814 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_bufferAlloc.c [2025-03-03 18:30:59,825 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 18:30:59,826 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_arrays_bufferAlloc.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 18:30:59,860 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 18:30:59,869 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;@600616ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 18:30:59,871 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 18:30:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:30:59,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-03 18:30:59,878 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:30:59,879 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-03 18:30:59,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:30:59,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:30:59,883 INFO L85 PathProgramCache]: Analyzing trace with hash 38140359, now seen corresponding path program 1 times [2025-03-03 18:30:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 18:30:59,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034448471] [2025-03-03 18:30:59,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:30:59,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 18:30:59,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 18:30:59,897 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 18:30:59,900 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 18:31:00,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-03 18:31:00,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-03 18:31:00,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:31:00,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:31:00,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-03 18:31:00,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 18:31:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:31:00,385 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 18:31:00,385 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 18:31:00,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034448471] [2025-03-03 18:31:00,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034448471] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 18:31:00,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 18:31:00,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 18:31:00,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920092031] [2025-03-03 18:31:00,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 18:31:00,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 18:31:00,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 18:31:00,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 18:31:00,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 18:31:00,405 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:31:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:31:00,476 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2025-03-03 18:31:00,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 18:31:00,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-03 18:31:00,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:31:00,483 INFO L225 Difference]: With dead ends: 18 [2025-03-03 18:31:00,484 INFO L226 Difference]: Without dead ends: 10 [2025-03-03 18:31:00,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 18:31:00,487 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 18:31:00,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 18:31:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-03-03 18:31:00,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2025-03-03 18:31:00,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:31:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2025-03-03 18:31:00,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2025-03-03 18:31:00,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:31:00,512 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2025-03-03 18:31:00,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:31:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2025-03-03 18:31:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-03 18:31:00,513 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:31:00,513 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-03 18:31:00,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 18:31:00,717 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 [2025-03-03 18:31:00,717 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:31:00,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:31:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1926026653, now seen corresponding path program 1 times [2025-03-03 18:31:00,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 18:31:00,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739467780] [2025-03-03 18:31:00,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 18:31:00,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 18:31:00,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 18:31:00,721 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 18:31:00,722 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 18:31:01,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-03 18:31:01,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-03 18:31:01,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 18:31:01,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:31:01,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-03 18:31:01,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 18:31:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:31:28,205 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 18:31:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 18:31:36,602 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 18:31:36,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739467780] [2025-03-03 18:31:36,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739467780] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 18:31:36,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 18:31:36,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-03 18:31:36,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735502750] [2025-03-03 18:31:36,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 18:31:36,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 18:31:36,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 18:31:36,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 18:31:36,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-03 18:31:36,604 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:31:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 18:31:37,172 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2025-03-03 18:31:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 18:31:37,174 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-03 18:31:37,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 18:31:37,174 INFO L225 Difference]: With dead ends: 15 [2025-03-03 18:31:37,174 INFO L226 Difference]: Without dead ends: 13 [2025-03-03 18:31:37,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2025-03-03 18:31:37,175 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 18:31:37,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 19 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 18:31:37,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-03-03 18:31:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2025-03-03 18:31:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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 18:31:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2025-03-03 18:31:37,176 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2025-03-03 18:31:37,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 18:31:37,177 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2025-03-03 18:31:37,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 18:31:37,177 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2025-03-03 18:31:37,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-03 18:31:37,177 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 18:31:37,177 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2025-03-03 18:31:37,184 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 18:31:37,377 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 [2025-03-03 18:31:37,378 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 18:31:37,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 18:31:37,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1791040441, now seen corresponding path program 2 times [2025-03-03 18:31:37,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 18:31:37,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974075267] [2025-03-03 18:31:37,379 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 18:31:37,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 18:31:37,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 18:31:37,381 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 18:31:37,382 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 18:31:37,735 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-03-03 18:31:37,825 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-03-03 18:31:37,825 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 18:31:37,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 18:31:37,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 72 conjuncts are in the unsatisfiable core [2025-03-03 18:31:37,847 INFO L279 TraceCheckSpWp]: Computing forward predicates...