./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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.Huffman_enc.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 6ce33b6f81168af3d96568d671c639f1b150a10746ef41348bbd6ceb49bdfdbb --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 07:43:41,626 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 07:43:41,684 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 07:43:41,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 07:43:41,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 07:43:41,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 07:43:41,709 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 07:43:41,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 07:43:41,709 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 07:43:41,709 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 07:43:41,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 07:43:41,710 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 07:43:41,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 07:43:41,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 07:43:41,711 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 07:43:41,711 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 07:43:41,711 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 07:43:41,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 07:43:41,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 07:43:41,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 07:43:41,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 07:43:41,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 07:43:41,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 07:43:41,712 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 07:43:41,712 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 07:43:41,712 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 07:43:41,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 07:43:41,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 07:43:41,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 07:43:41,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:43:41,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 07:43:41,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 07:43:41,713 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 07:43:41,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 07:43:41,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 07:43:41,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 07:43:41,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 07:43:41,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 07:43:41,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 07:43:41,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 07:43:41,714 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 -> 6ce33b6f81168af3d96568d671c639f1b150a10746ef41348bbd6ceb49bdfdbb [2025-03-08 07:43:41,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 07:43:41,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 07:43:41,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 07:43:41,954 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 07:43:41,954 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 07:43:41,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c [2025-03-08 07:43:43,062 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c868057/855131ada89e4f369c7ee8e9e9574fe1/FLAG0e81dd9c9 [2025-03-08 07:43:43,324 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 07:43:43,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c [2025-03-08 07:43:43,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c868057/855131ada89e4f369c7ee8e9e9574fe1/FLAG0e81dd9c9 [2025-03-08 07:43:43,639 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c868057/855131ada89e4f369c7ee8e9e9574fe1 [2025-03-08 07:43:43,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 07:43:43,644 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 07:43:43,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 07:43:43,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 07:43:43,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 07:43:43,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:43,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5540f65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43, skipping insertion in model container [2025-03-08 07:43:43,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:43,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 07:43:43,760 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.Huffman_enc.c[1251,1264] [2025-03-08 07:43:43,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:43:43,860 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 07:43:43,867 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.Huffman_enc.c[1251,1264] [2025-03-08 07:43:43,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:43:43,945 INFO L204 MainTranslator]: Completed translation [2025-03-08 07:43:43,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43 WrapperNode [2025-03-08 07:43:43,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 07:43:43,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 07:43:43,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 07:43:43,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 07:43:43,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:43,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:44,011 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 758 [2025-03-08 07:43:44,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 07:43:44,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 07:43:44,012 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 07:43:44,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 07:43:44,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:44,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:44,034 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:44,069 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]. [2025-03-08 07:43:44,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:44,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:44,086 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:44,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:44,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:44,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:44,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 07:43:44,116 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 07:43:44,117 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 07:43:44,117 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 07:43:44,117 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (1/1) ... [2025-03-08 07:43:44,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:43:44,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:44,142 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) [2025-03-08 07:43:44,145 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 [2025-03-08 07:43:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 07:43:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 07:43:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 07:43:44,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 07:43:44,278 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 07:43:44,279 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 07:43:45,116 INFO L? ?]: Removed 427 outVars from TransFormulas that were not future-live. [2025-03-08 07:43:45,116 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 07:43:45,156 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 07:43:45,156 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 07:43:45,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:43:45 BoogieIcfgContainer [2025-03-08 07:43:45,157 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 07:43:45,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 07:43:45,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 07:43:45,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 07:43:45,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:43:43" (1/3) ... [2025-03-08 07:43:45,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a80c625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:43:45, skipping insertion in model container [2025-03-08 07:43:45,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:43" (2/3) ... [2025-03-08 07:43:45,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a80c625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:43:45, skipping insertion in model container [2025-03-08 07:43:45,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:43:45" (3/3) ... [2025-03-08 07:43:45,166 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.Huffman_enc.c [2025-03-08 07:43:45,177 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 07:43:45,179 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.Huffman_enc.c that has 1 procedures, 166 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 07:43:45,223 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 07:43:45,232 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;@43c7964, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 07:43:45,232 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 07:43:45,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 164 states have (on average 1.4939024390243902) internal successors, (245), 165 states have internal predecessors, (245), 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) [2025-03-08 07:43:45,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-08 07:43:45,240 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:45,240 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:43:45,241 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:45,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash 632621036, now seen corresponding path program 1 times [2025-03-08 07:43:45,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:45,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751688373] [2025-03-08 07:43:45,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:45,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:45,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 07:43:45,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 07:43:45,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:45,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:43:45,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:45,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751688373] [2025-03-08 07:43:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751688373] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:43:45,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:43:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 07:43:45,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586520198] [2025-03-08 07:43:45,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:45,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 07:43:45,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:45,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 07:43:45,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 07:43:45,708 INFO L87 Difference]: Start difference. First operand has 166 states, 164 states have (on average 1.4939024390243902) internal successors, (245), 165 states have internal predecessors, (245), 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 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-03-08 07:43:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:45,863 INFO L93 Difference]: Finished difference Result 325 states and 483 transitions. [2025-03-08 07:43:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:43:45,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-08 07:43:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:45,869 INFO L225 Difference]: With dead ends: 325 [2025-03-08 07:43:45,870 INFO L226 Difference]: Without dead ends: 165 [2025-03-08 07:43:45,872 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 [2025-03-08 07:43:45,874 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:45,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 595 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:43:45,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-03-08 07:43:45,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2025-03-08 07:43:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4817073170731707) internal successors, (243), 164 states have internal predecessors, (243), 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) [2025-03-08 07:43:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 243 transitions. [2025-03-08 07:43:45,908 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 243 transitions. Word has length 19 [2025-03-08 07:43:45,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:45,910 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 243 transitions. [2025-03-08 07:43:45,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2025-03-08 07:43:45,911 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 243 transitions. [2025-03-08 07:43:45,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-08 07:43:45,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:45,912 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] [2025-03-08 07:43:45,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 07:43:45,913 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:45,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:45,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1858904995, now seen corresponding path program 1 times [2025-03-08 07:43:45,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:45,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521469836] [2025-03-08 07:43:45,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:45,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:45,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 07:43:45,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 07:43:45,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:45,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:43:46,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:46,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521469836] [2025-03-08 07:43:46,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521469836] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:43:46,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:43:46,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 07:43:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625381149] [2025-03-08 07:43:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:46,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 07:43:46,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:46,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 07:43:46,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 07:43:46,065 INFO L87 Difference]: Start difference. First operand 165 states and 243 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:43:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:46,185 INFO L93 Difference]: Finished difference Result 326 states and 481 transitions. [2025-03-08 07:43:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:43:46,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-03-08 07:43:46,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:46,187 INFO L225 Difference]: With dead ends: 326 [2025-03-08 07:43:46,187 INFO L226 Difference]: Without dead ends: 167 [2025-03-08 07:43:46,187 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 [2025-03-08 07:43:46,188 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:46,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 592 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:43:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2025-03-08 07:43:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2025-03-08 07:43:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4759036144578312) internal successors, (245), 166 states have internal predecessors, (245), 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) [2025-03-08 07:43:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 245 transitions. [2025-03-08 07:43:46,195 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 245 transitions. Word has length 20 [2025-03-08 07:43:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:46,195 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 245 transitions. [2025-03-08 07:43:46,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:43:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 245 transitions. [2025-03-08 07:43:46,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 07:43:46,196 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:46,196 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] [2025-03-08 07:43:46,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 07:43:46,196 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:46,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:46,197 INFO L85 PathProgramCache]: Analyzing trace with hash 140029447, now seen corresponding path program 1 times [2025-03-08 07:43:46,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:46,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678935355] [2025-03-08 07:43:46,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:46,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:46,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 07:43:46,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 07:43:46,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:46,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:43:46,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:46,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678935355] [2025-03-08 07:43:46,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678935355] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:43:46,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:43:46,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:43:46,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865773147] [2025-03-08 07:43:46,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:46,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:43:46,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:46,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:43:46,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:43:46,747 INFO L87 Difference]: Start difference. First operand 167 states and 245 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2025-03-08 07:43:46,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:46,889 INFO L93 Difference]: Finished difference Result 336 states and 494 transitions. [2025-03-08 07:43:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:43:46,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2025-03-08 07:43:46,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:46,891 INFO L225 Difference]: With dead ends: 336 [2025-03-08 07:43:46,892 INFO L226 Difference]: Without dead ends: 175 [2025-03-08 07:43:46,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 07:43:46,893 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 249 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:46,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 784 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:43:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-03-08 07:43:46,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2025-03-08 07:43:46,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.4682080924855492) internal successors, (254), 173 states have internal predecessors, (254), 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) [2025-03-08 07:43:46,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 254 transitions. [2025-03-08 07:43:46,900 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 254 transitions. Word has length 21 [2025-03-08 07:43:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:46,900 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 254 transitions. [2025-03-08 07:43:46,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2025-03-08 07:43:46,901 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 254 transitions. [2025-03-08 07:43:46,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-08 07:43:46,901 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:46,901 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] [2025-03-08 07:43:46,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 07:43:46,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:46,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash 934209612, now seen corresponding path program 1 times [2025-03-08 07:43:46,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:46,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402150599] [2025-03-08 07:43:46,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:46,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:46,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 07:43:46,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 07:43:46,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:46,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:43:47,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:43:47,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402150599] [2025-03-08 07:43:47,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402150599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:43:47,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:43:47,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:43:47,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103922527] [2025-03-08 07:43:47,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:47,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:43:47,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:43:47,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:43:47,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:43:47,017 INFO L87 Difference]: Start difference. First operand 174 states and 254 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2025-03-08 07:43:47,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:47,164 INFO L93 Difference]: Finished difference Result 494 states and 721 transitions. [2025-03-08 07:43:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 07:43:47,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2025-03-08 07:43:47,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:47,166 INFO L225 Difference]: With dead ends: 494 [2025-03-08 07:43:47,166 INFO L226 Difference]: Without dead ends: 326 [2025-03-08 07:43:47,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:43:47,167 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 212 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:47,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 775 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 07:43:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2025-03-08 07:43:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 181. [2025-03-08 07:43:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.461111111111111) internal successors, (263), 180 states have internal predecessors, (263), 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) [2025-03-08 07:43:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 263 transitions. [2025-03-08 07:43:47,174 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 263 transitions. Word has length 22 [2025-03-08 07:43:47,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:47,174 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 263 transitions. [2025-03-08 07:43:47,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2025-03-08 07:43:47,174 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 263 transitions. [2025-03-08 07:43:47,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-08 07:43:47,174 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:47,175 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] [2025-03-08 07:43:47,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 07:43:47,175 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:47,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:47,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1000481681, now seen corresponding path program 1 times [2025-03-08 07:43:47,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:43:47,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143095000] [2025-03-08 07:43:47,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:47,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:43:47,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-08 07:43:47,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 07:43:47,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:47,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 07:43:47,207 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 07:43:47,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-08 07:43:47,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 07:43:47,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:47,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 07:43:47,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 07:43:47,259 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 07:43:47,260 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 07:43:47,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 07:43:47,263 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-08 07:43:47,296 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-08 07:43:47,310 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 07:43:47,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 07:43:47 BoogieIcfgContainer [2025-03-08 07:43:47,316 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 07:43:47,316 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 07:43:47,316 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 07:43:47,316 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 07:43:47,319 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:43:45" (3/4) ... [2025-03-08 07:43:47,320 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-08 07:43:47,321 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 07:43:47,322 INFO L158 Benchmark]: Toolchain (without parser) took 3677.46ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 105.5MB in the beginning and 228.3MB in the end (delta: -122.8MB). Peak memory consumption was 60.0MB. Max. memory is 16.1GB. [2025-03-08 07:43:47,322 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory is still 116.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 07:43:47,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.48ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 83.1MB in the end (delta: 22.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 07:43:47,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.81ms. Allocated memory is still 142.6MB. Free memory was 83.1MB in the beginning and 67.4MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 07:43:47,323 INFO L158 Benchmark]: Boogie Preprocessor took 104.31ms. Allocated memory is still 142.6MB. Free memory was 67.4MB in the beginning and 59.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 07:43:47,323 INFO L158 Benchmark]: IcfgBuilder took 1040.29ms. Allocated memory is still 142.6MB. Free memory was 59.0MB in the beginning and 62.7MB in the end (delta: -3.7MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2025-03-08 07:43:47,323 INFO L158 Benchmark]: TraceAbstraction took 2157.47ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 61.9MB in the beginning and 228.4MB in the end (delta: -166.4MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2025-03-08 07:43:47,324 INFO L158 Benchmark]: Witness Printer took 4.86ms. Allocated memory is still 327.2MB. Free memory was 228.4MB in the beginning and 228.3MB in the end (delta: 66.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 07:43:47,325 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory is still 116.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.48ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 83.1MB in the end (delta: 22.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.81ms. Allocated memory is still 142.6MB. Free memory was 83.1MB in the beginning and 67.4MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 104.31ms. Allocated memory is still 142.6MB. Free memory was 67.4MB in the beginning and 59.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 1040.29ms. Allocated memory is still 142.6MB. Free memory was 59.0MB in the beginning and 62.7MB in the end (delta: -3.7MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2157.47ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 61.9MB in the beginning and 228.4MB in the end (delta: -166.4MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Witness Printer took 4.86ms. Allocated memory is still 327.2MB. Free memory was 228.4MB in the beginning and 228.3MB in the end (delta: 66.0kB). 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 bitwiseOr at line 141. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 5); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (5 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 1); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (1 - 1); [L32] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 10); [L33] const SORT_5 msb_SORT_5 = (SORT_5)1 << (10 - 1); [L35] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 32); [L36] const SORT_7 msb_SORT_7 = (SORT_7)1 << (32 - 1); [L38] const SORT_19 mask_SORT_19 = (SORT_19)-1 >> (sizeof(SORT_19) * 8 - 8); [L39] const SORT_19 msb_SORT_19 = (SORT_19)1 << (8 - 1); [L41] const SORT_26 mask_SORT_26 = (SORT_26)-1 >> (sizeof(SORT_26) * 8 - 9); [L42] const SORT_26 msb_SORT_26 = (SORT_26)1 << (9 - 1); [L44] const SORT_33 mask_SORT_33 = (SORT_33)-1 >> (sizeof(SORT_33) * 8 - 27); [L45] const SORT_33 msb_SORT_33 = (SORT_33)1 << (27 - 1); [L47] const SORT_7 var_9 = 0; [L48] const SORT_3 var_15 = 1; [L49] const SORT_3 var_25 = 0; [L50] const SORT_5 var_29 = 0; [L51] const SORT_5 var_30 = 908; [L52] const SORT_7 var_31 = 32; [L53] const SORT_7 var_32 = 65; [L54] const SORT_33 var_34 = 0; [L55] const SORT_7 var_38 = 26; [L56] const SORT_7 var_43 = 74; [L57] const SORT_5 var_46 = 652; [L58] const SORT_7 var_48 = 90; [L59] const SORT_5 var_51 = 460; [L60] const SORT_7 var_53 = 88; [L61] const SORT_5 var_56 = 332; [L62] const SORT_7 var_58 = 75; [L63] const SORT_5 var_61 = 268; [L64] const SORT_7 var_63 = 81; [L65] const SORT_5 var_66 = 215; [L66] const SORT_7 var_68 = 86; [L67] const SORT_5 var_71 = 151; [L68] const SORT_7 var_73 = 66; [L69] const SORT_5 var_76 = 119; [L70] const SORT_7 var_78 = 77; [L71] const SORT_5 var_81 = 118; [L72] const SORT_7 var_83 = 89; [L73] const SORT_5 var_86 = 86; [L74] const SORT_7 var_88 = 71; [L75] const SORT_5 var_91 = 108; [L76] const SORT_7 var_93 = 87; [L77] const SORT_5 var_96 = 39; [L78] const SORT_7 var_98 = 68; [L79] const SORT_5 var_101 = 38; [L80] const SORT_7 var_103 = 72; [L81] const SORT_5 var_106 = 60; [L82] const SORT_7 var_108 = 76; [L83] const SORT_5 var_111 = 56; [L84] const SORT_7 var_113 = 67; [L85] const SORT_5 var_116 = 40; [L86] const SORT_7 var_118 = 70; [L87] const SORT_5 var_121 = 48; [L88] const SORT_7 var_123 = 80; [L89] const SORT_5 var_126 = 32; [L90] const SORT_7 var_128 = 85; [L91] const SORT_5 var_131 = 31; [L92] const SORT_7 var_133 = 84; [L93] const SORT_5 var_136 = 29; [L94] const SORT_7 var_138 = 78; [L95] const SORT_5 var_141 = 21; [L96] const SORT_7 var_143 = 82; [L97] const SORT_5 var_146 = 25; [L98] const SORT_7 var_148 = 79; [L99] const SORT_5 var_151 = 17; [L100] const SORT_7 var_153 = 73; [L101] const SORT_5 var_156 = 30; [L102] const SORT_5 var_160 = 20; [L103] const SORT_7 var_162 = 83; [L104] const SORT_5 var_165 = 11; [L105] const SORT_5 var_169 = 10; [L106] const SORT_7 var_171 = 69; [L107] const SORT_7 var_176 = 1; [L109] SORT_1 input_2; [L110] SORT_3 input_4; [L111] SORT_19 input_20; [L112] SORT_3 input_22; [L114] EXPR __VERIFIER_nondet_ushort() & mask_SORT_5 VAL [mask_SORT_19=255, mask_SORT_1=31, mask_SORT_26=511, mask_SORT_3=1, mask_SORT_5=1023, var_101=38, var_103=72, var_106=60, var_108=76, var_111=56, var_113=67, var_116=40, var_118=70, var_121=48, var_123=80, var_126=32, var_128=85, var_131=31, var_133=84, var_136=29, var_138=78, var_141=21, var_143=82, var_146=25, var_148=79, var_151=17, var_153=73, var_156=30, var_15=1, var_160=20, var_162=83, var_165=11, var_169=10, var_171=69, var_176=1, var_25=0, var_29=0, var_30=908, var_31=32, var_32=65, var_34=0, var_38=26, var_43=74, var_46=652, var_48=90, var_51=460, var_53=88, var_56=332, var_58=75, var_61=268, var_63=81, var_66=215, var_68=86, var_71=151, var_73=66, var_76=119, var_78=77, var_81=118, var_83=89, var_86=86, var_88=71, var_91=108, var_93=87, var_96=39, var_98=68, var_9=0] [L114] SORT_5 state_6 = __VERIFIER_nondet_ushort() & mask_SORT_5; [L118] input_2 = __VERIFIER_nondet_uchar() [L119] EXPR input_2 & mask_SORT_1 VAL [mask_SORT_19=255, mask_SORT_1=31, mask_SORT_26=511, mask_SORT_3=1, mask_SORT_5=1023, state_6=0, var_101=38, var_103=72, var_106=60, var_108=76, var_111=56, var_113=67, var_116=40, var_118=70, var_121=48, var_123=80, var_126=32, var_128=85, var_131=31, var_133=84, var_136=29, var_138=78, var_141=21, var_143=82, var_146=25, var_148=79, var_151=17, var_153=73, var_156=30, var_15=1, var_160=20, var_162=83, var_165=11, var_169=10, var_171=69, var_176=1, var_25=0, var_29=0, var_30=908, var_31=32, var_32=65, var_34=0, var_38=26, var_43=74, var_46=652, var_48=90, var_51=460, var_53=88, var_56=332, var_58=75, var_61=268, var_63=81, var_66=215, var_68=86, var_71=151, var_73=66, var_76=119, var_78=77, var_81=118, var_83=89, var_86=86, var_88=71, var_91=108, var_93=87, var_96=39, var_98=68, var_9=0] [L119] input_2 = input_2 & mask_SORT_1 [L120] input_4 = __VERIFIER_nondet_uchar() [L121] input_20 = __VERIFIER_nondet_uchar() [L122] input_22 = __VERIFIER_nondet_uchar() [L125] SORT_5 var_8_arg_0 = state_6; VAL [input_2=0, mask_SORT_19=255, mask_SORT_1=31, mask_SORT_26=511, mask_SORT_3=1, mask_SORT_5=1023, state_6=0, var_101=38, var_103=72, var_106=60, var_108=76, var_111=56, var_113=67, var_116=40, var_118=70, var_121=48, var_123=80, var_126=32, var_128=85, var_131=31, var_133=84, var_136=29, var_138=78, var_141=21, var_143=82, var_146=25, var_148=79, var_151=17, var_153=73, var_156=30, var_15=1, var_160=20, var_162=83, var_165=11, var_169=10, var_171=69, var_176=1, var_25=0, var_29=0, var_30=908, var_31=32, var_32=65, var_34=0, var_38=26, var_43=74, var_46=652, var_48=90, var_51=460, var_53=88, var_56=332, var_58=75, var_61=268, var_63=81, var_66=215, var_68=86, var_71=151, var_73=66, var_76=119, var_78=77, var_81=118, var_83=89, var_86=86, var_88=71, var_8_arg_0=0, var_91=108, var_93=87, var_96=39, var_98=68, var_9=0] [L126] EXPR var_8_arg_0 & mask_SORT_5 VAL [input_2=0, mask_SORT_19=255, mask_SORT_1=31, mask_SORT_26=511, mask_SORT_3=1, mask_SORT_5=1023, state_6=0, var_101=38, var_103=72, var_106=60, var_108=76, var_111=56, var_113=67, var_116=40, var_118=70, var_121=48, var_123=80, var_126=32, var_128=85, var_131=31, var_133=84, var_136=29, var_138=78, var_141=21, var_143=82, var_146=25, var_148=79, var_151=17, var_153=73, var_156=30, var_15=1, var_160=20, var_162=83, var_165=11, var_169=10, var_171=69, var_176=1, var_25=0, var_29=0, var_30=908, var_31=32, var_32=65, var_34=0, var_38=26, var_43=74, var_46=652, var_48=90, var_51=460, var_53=88, var_56=332, var_58=75, var_61=268, var_63=81, var_66=215, var_68=86, var_71=151, var_73=66, var_76=119, var_78=77, var_81=118, var_83=89, var_86=86, var_88=71, var_91=108, var_93=87, var_96=39, var_98=68, var_9=0] [L126] var_8_arg_0 = var_8_arg_0 & mask_SORT_5 [L127] SORT_7 var_8 = var_8_arg_0; [L128] SORT_7 var_10_arg_0 = var_8; [L129] SORT_7 var_10_arg_1 = var_9; [L130] SORT_3 var_10 = var_10_arg_0 == var_10_arg_1; [L131] SORT_5 var_11_arg_0 = state_6; VAL [input_2=0, mask_SORT_19=255, mask_SORT_1=31, mask_SORT_26=511, mask_SORT_3=1, mask_SORT_5=1023, state_6=0, var_101=38, var_103=72, var_106=60, var_108=76, var_10=1, var_111=56, var_113=67, var_116=40, var_118=70, var_11_arg_0=0, var_121=48, var_123=80, var_126=32, var_128=85, var_131=31, var_133=84, var_136=29, var_138=78, var_141=21, var_143=82, var_146=25, var_148=79, var_151=17, var_153=73, var_156=30, var_15=1, var_160=20, var_162=83, var_165=11, var_169=10, var_171=69, var_176=1, var_25=0, var_29=0, var_30=908, var_31=32, var_32=65, var_34=0, var_38=26, var_43=74, var_46=652, var_48=90, var_51=460, var_53=88, var_56=332, var_58=75, var_61=268, var_63=81, var_66=215, var_68=86, var_71=151, var_73=66, var_76=119, var_78=77, var_81=118, var_83=89, var_86=86, var_88=71, var_91=108, var_93=87, var_96=39, var_98=68, var_9=0] [L132] EXPR var_11_arg_0 & mask_SORT_5 VAL [input_2=0, mask_SORT_19=255, mask_SORT_1=31, mask_SORT_26=511, mask_SORT_3=1, mask_SORT_5=1023, state_6=0, var_101=38, var_103=72, var_106=60, var_108=76, var_10=1, var_111=56, var_113=67, var_116=40, var_118=70, var_121=48, var_123=80, var_126=32, var_128=85, var_131=31, var_133=84, var_136=29, var_138=78, var_141=21, var_143=82, var_146=25, var_148=79, var_151=17, var_153=73, var_156=30, var_15=1, var_160=20, var_162=83, var_165=11, var_169=10, var_171=69, var_176=1, var_25=0, var_29=0, var_30=908, var_31=32, var_32=65, var_34=0, var_38=26, var_43=74, var_46=652, var_48=90, var_51=460, var_53=88, var_56=332, var_58=75, var_61=268, var_63=81, var_66=215, var_68=86, var_71=151, var_73=66, var_76=119, var_78=77, var_81=118, var_83=89, var_86=86, var_88=71, var_91=108, var_93=87, var_96=39, var_98=68, var_9=0] [L132] var_11_arg_0 = var_11_arg_0 & mask_SORT_5 [L133] SORT_7 var_11 = var_11_arg_0; [L134] SORT_7 var_12_arg_0 = var_11; [L135] SORT_7 var_12_arg_1 = var_9; [L136] SORT_3 var_12 = var_12_arg_0 == var_12_arg_1; [L137] SORT_3 var_13_arg_0 = var_12; [L138] SORT_3 var_13 = ~var_13_arg_0; [L139] SORT_3 var_14_arg_0 = var_10; [L140] SORT_3 var_14_arg_1 = var_13; VAL [input_2=0, mask_SORT_19=255, mask_SORT_1=31, mask_SORT_26=511, mask_SORT_3=1, mask_SORT_5=1023, state_6=0, var_101=38, var_103=72, var_106=60, var_108=76, var_111=56, var_113=67, var_116=40, var_118=70, var_121=48, var_123=80, var_126=32, var_128=85, var_131=31, var_133=84, var_136=29, var_138=78, var_141=21, var_143=82, var_146=25, var_148=79, var_14_arg_0=1, var_14_arg_1=-2, var_151=17, var_153=73, var_156=30, var_15=1, var_160=20, var_162=83, var_165=11, var_169=10, var_171=69, var_176=1, var_25=0, var_29=0, var_30=908, var_31=32, var_32=65, var_34=0, var_38=26, var_43=74, var_46=652, var_48=90, var_51=460, var_53=88, var_56=332, var_58=75, var_61=268, var_63=81, var_66=215, var_68=86, var_71=151, var_73=66, var_76=119, var_78=77, var_81=118, var_83=89, var_86=86, var_88=71, var_91=108, var_93=87, var_96=39, var_98=68, var_9=0] [L141] EXPR var_14_arg_0 | var_14_arg_1 VAL [input_2=0, mask_SORT_19=255, mask_SORT_1=31, mask_SORT_26=511, mask_SORT_3=1, mask_SORT_5=1023, state_6=0, var_101=38, var_103=72, var_106=60, var_108=76, var_111=56, var_113=67, var_116=40, var_118=70, var_121=48, var_123=80, var_126=32, var_128=85, var_131=31, var_133=84, var_136=29, var_138=78, var_141=21, var_143=82, var_146=25, var_148=79, var_151=17, var_153=73, var_156=30, var_15=1, var_160=20, var_162=83, var_165=11, var_169=10, var_171=69, var_176=1, var_25=0, var_29=0, var_30=908, var_31=32, var_32=65, var_34=0, var_38=26, var_43=74, var_46=652, var_48=90, var_51=460, var_53=88, var_56=332, var_58=75, var_61=268, var_63=81, var_66=215, var_68=86, var_71=151, var_73=66, var_76=119, var_78=77, var_81=118, var_83=89, var_86=86, var_88=71, var_91=108, var_93=87, var_96=39, var_98=68, var_9=0] [L141] SORT_3 var_14 = var_14_arg_0 | var_14_arg_1; [L142] SORT_3 var_16_arg_0 = var_14; [L143] SORT_3 var_16 = ~var_16_arg_0; [L144] SORT_3 var_17_arg_0 = var_15; [L145] SORT_3 var_17_arg_1 = var_16; VAL [input_2=0, mask_SORT_19=255, mask_SORT_1=31, mask_SORT_26=511, mask_SORT_3=1, mask_SORT_5=1023, state_6=0, var_101=38, var_103=72, var_106=60, var_108=76, var_111=56, var_113=67, var_116=40, var_118=70, var_121=48, var_123=80, var_126=32, var_128=85, var_131=31, var_133=84, var_136=29, var_138=78, var_141=21, var_143=82, var_146=25, var_148=79, var_151=17, var_153=73, var_156=30, var_15=1, var_160=20, var_162=83, var_165=11, var_169=10, var_171=69, var_176=1, var_17_arg_0=1, var_17_arg_1=-255, var_25=0, var_29=0, var_30=908, var_31=32, var_32=65, var_34=0, var_38=26, var_43=74, var_46=652, var_48=90, var_51=460, var_53=88, var_56=332, var_58=75, var_61=268, var_63=81, var_66=215, var_68=86, var_71=151, var_73=66, var_76=119, var_78=77, var_81=118, var_83=89, var_86=86, var_88=71, var_91=108, var_93=87, var_96=39, var_98=68, var_9=0] [L146] EXPR var_17_arg_0 & var_17_arg_1 VAL [input_2=0, mask_SORT_19=255, mask_SORT_1=31, mask_SORT_26=511, mask_SORT_3=1, mask_SORT_5=1023, state_6=0, var_101=38, var_103=72, var_106=60, var_108=76, var_111=56, var_113=67, var_116=40, var_118=70, var_121=48, var_123=80, var_126=32, var_128=85, var_131=31, var_133=84, var_136=29, var_138=78, var_141=21, var_143=82, var_146=25, var_148=79, var_151=17, var_153=73, var_156=30, var_15=1, var_160=20, var_162=83, var_165=11, var_169=10, var_171=69, var_176=1, var_25=0, var_29=0, var_30=908, var_31=32, var_32=65, var_34=0, var_38=26, var_43=74, var_46=652, var_48=90, var_51=460, var_53=88, var_56=332, var_58=75, var_61=268, var_63=81, var_66=215, var_68=86, var_71=151, var_73=66, var_76=119, var_78=77, var_81=118, var_83=89, var_86=86, var_88=71, var_91=108, var_93=87, var_96=39, var_98=68, var_9=0] [L146] SORT_3 var_17 = var_17_arg_0 & var_17_arg_1; [L147] EXPR var_17 & mask_SORT_3 VAL [input_2=0, mask_SORT_19=255, mask_SORT_1=31, mask_SORT_26=511, mask_SORT_3=1, mask_SORT_5=1023, state_6=0, var_101=38, var_103=72, var_106=60, var_108=76, var_111=56, var_113=67, var_116=40, var_118=70, var_121=48, var_123=80, var_126=32, var_128=85, var_131=31, var_133=84, var_136=29, var_138=78, var_141=21, var_143=82, var_146=25, var_148=79, var_151=17, var_153=73, var_156=30, var_15=1, var_160=20, var_162=83, var_165=11, var_169=10, var_171=69, var_176=1, var_25=0, var_29=0, var_30=908, var_31=32, var_32=65, var_34=0, var_38=26, var_43=74, var_46=652, var_48=90, var_51=460, var_53=88, var_56=332, var_58=75, var_61=268, var_63=81, var_66=215, var_68=86, var_71=151, var_73=66, var_76=119, var_78=77, var_81=118, var_83=89, var_86=86, var_88=71, var_91=108, var_93=87, var_96=39, var_98=68, var_9=0] [L147] var_17 = var_17 & mask_SORT_3 [L148] SORT_3 bad_18_arg_0 = var_17; [L149] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 166 locations, 245 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 461 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 461 mSDsluCounter, 2746 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1952 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 625 IncrementalHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 794 mSDtfsCounter, 625 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 146 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 [2025-03-08 07:43:47,342 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.Huffman_enc.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 6ce33b6f81168af3d96568d671c639f1b150a10746ef41348bbd6ceb49bdfdbb --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 07:43:49,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 07:43:49,245 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-03-08 07:43:49,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 07:43:49,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 07:43:49,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 07:43:49,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 07:43:49,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 07:43:49,276 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 07:43:49,276 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 07:43:49,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 07:43:49,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 07:43:49,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 07:43:49,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 07:43:49,277 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 07:43:49,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 07:43:49,278 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:43:49,278 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 07:43:49,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 07:43:49,279 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-08 07:43:49,279 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-08 07:43:49,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 07:43:49,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 07:43:49,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 07:43:49,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 07:43:49,279 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 -> 6ce33b6f81168af3d96568d671c639f1b150a10746ef41348bbd6ceb49bdfdbb [2025-03-08 07:43:49,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 07:43:49,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 07:43:49,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 07:43:49,546 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 07:43:49,546 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 07:43:49,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c [2025-03-08 07:43:50,673 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ee576324/8491b6b3c31c4266a2549f8647c993d1/FLAG63bb18bc0 [2025-03-08 07:43:50,909 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 07:43:50,909 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c [2025-03-08 07:43:50,919 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ee576324/8491b6b3c31c4266a2549f8647c993d1/FLAG63bb18bc0 [2025-03-08 07:43:50,942 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ee576324/8491b6b3c31c4266a2549f8647c993d1 [2025-03-08 07:43:50,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 07:43:50,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 07:43:50,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 07:43:50,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 07:43:50,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 07:43:50,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:43:50" (1/1) ... [2025-03-08 07:43:50,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@711178c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:50, skipping insertion in model container [2025-03-08 07:43:50,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:43:50" (1/1) ... [2025-03-08 07:43:50,975 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 07:43:51,120 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.Huffman_enc.c[1251,1264] [2025-03-08 07:43:51,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:43:51,261 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 07:43:51,272 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.Huffman_enc.c[1251,1264] [2025-03-08 07:43:51,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:43:51,369 INFO L204 MainTranslator]: Completed translation [2025-03-08 07:43:51,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51 WrapperNode [2025-03-08 07:43:51,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 07:43:51,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 07:43:51,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 07:43:51,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 07:43:51,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,441 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 446 [2025-03-08 07:43:51,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 07:43:51,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 07:43:51,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 07:43:51,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 07:43:51,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,462 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,478 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]. [2025-03-08 07:43:51,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,497 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 07:43:51,511 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 07:43:51,511 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 07:43:51,511 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 07:43:51,515 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (1/1) ... [2025-03-08 07:43:51,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:43:51,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:51,551 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) [2025-03-08 07:43:51,555 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 [2025-03-08 07:43:51,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 07:43:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-08 07:43:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 07:43:51,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 07:43:51,726 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 07:43:51,727 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 07:43:52,278 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2025-03-08 07:43:52,279 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 07:43:52,284 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 07:43:52,284 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 07:43:52,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:43:52 BoogieIcfgContainer [2025-03-08 07:43:52,284 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 07:43:52,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 07:43:52,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 07:43:52,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 07:43:52,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:43:50" (1/3) ... [2025-03-08 07:43:52,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0ddb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:43:52, skipping insertion in model container [2025-03-08 07:43:52,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:43:51" (2/3) ... [2025-03-08 07:43:52,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0ddb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:43:52, skipping insertion in model container [2025-03-08 07:43:52,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:43:52" (3/3) ... [2025-03-08 07:43:52,290 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.Huffman_enc.c [2025-03-08 07:43:52,300 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 07:43:52,301 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.Huffman_enc.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 07:43:52,336 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 07:43:52,345 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;@43aa7e13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 07:43:52,345 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 07:43:52,347 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) [2025-03-08 07:43:52,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-08 07:43:52,350 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:43:52,350 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-08 07:43:52,351 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:43:52,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:43:52,356 INFO L85 PathProgramCache]: Analyzing trace with hash 38140359, now seen corresponding path program 1 times [2025-03-08 07:43:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 07:43:52,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041427985] [2025-03-08 07:43:52,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:43:52,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 07:43:52,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:43:52,368 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) [2025-03-08 07:43:52,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 07:43:52,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-08 07:43:52,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-08 07:43:52,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:43:52,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:43:52,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 07:43:52,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:43:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:43:52,780 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 07:43:52,780 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 07:43:52,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041427985] [2025-03-08 07:43:52,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041427985] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:43:52,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:43:52,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 07:43:52,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723181591] [2025-03-08 07:43:52,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:43:52,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 07:43:52,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 07:43:52,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 07:43:52,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 07:43:52,802 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) [2025-03-08 07:43:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:43:52,841 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2025-03-08 07:43:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:43:52,845 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 [2025-03-08 07:43:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:43:52,848 INFO L225 Difference]: With dead ends: 13 [2025-03-08 07:43:52,848 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 07:43:52,850 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 [2025-03-08 07:43:52,851 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 07:43:52,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:43:52,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 07:43:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 07:43:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 07:43:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 07:43:52,867 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2025-03-08 07:43:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:43:52,867 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 07:43:52,867 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) [2025-03-08 07:43:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 07:43:52,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 07:43:52,870 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 07:43:52,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 07:43:53,071 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 [2025-03-08 07:43:53,074 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-08 07:43:53,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-08 07:43:53,091 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 07:43:53,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 07:43:53 BoogieIcfgContainer [2025-03-08 07:43:53,103 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 07:43:53,104 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 07:43:53,104 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 07:43:53,104 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 07:43:53,104 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:43:52" (3/4) ... [2025-03-08 07:43:53,106 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 07:43:53,124 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-08 07:43:53,125 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-08 07:43:53,125 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 07:43:53,127 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 07:43:53,205 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 07:43:53,205 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 07:43:53,206 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 07:43:53,206 INFO L158 Benchmark]: Toolchain (without parser) took 2260.46ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 34.8MB in the end (delta: 55.7MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2025-03-08 07:43:53,207 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 54.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 07:43:53,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.81ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 68.9MB in the end (delta: 21.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 07:43:53,207 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.76ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 64.9MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 07:43:53,207 INFO L158 Benchmark]: Boogie Preprocessor took 68.65ms. Allocated memory is still 117.4MB. Free memory was 64.9MB in the beginning and 60.9MB in the end (delta: 4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 07:43:53,208 INFO L158 Benchmark]: IcfgBuilder took 773.28ms. Allocated memory is still 117.4MB. Free memory was 60.9MB in the beginning and 67.6MB in the end (delta: -6.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2025-03-08 07:43:53,208 INFO L158 Benchmark]: TraceAbstraction took 817.22ms. Allocated memory is still 117.4MB. Free memory was 66.9MB in the beginning and 44.0MB in the end (delta: 22.8MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2025-03-08 07:43:53,208 INFO L158 Benchmark]: Witness Printer took 101.93ms. Allocated memory is still 117.4MB. Free memory was 44.0MB in the beginning and 34.8MB in the end (delta: 9.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 07:43:53,210 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 54.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.81ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 68.9MB in the end (delta: 21.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.76ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 64.9MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 68.65ms. Allocated memory is still 117.4MB. Free memory was 64.9MB in the beginning and 60.9MB in the end (delta: 4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 773.28ms. Allocated memory is still 117.4MB. Free memory was 60.9MB in the beginning and 67.6MB in the end (delta: -6.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 817.22ms. Allocated memory is still 117.4MB. Free memory was 66.9MB in the beginning and 44.0MB in the end (delta: 22.8MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Witness Printer took 101.93ms. Allocated memory is still 117.4MB. Free memory was 44.0MB in the beginning and 34.8MB in the end (delta: 9.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 11 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 3 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 4 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 116]: Location Invariant Derived location invariant: (((0 == var_9) && (1 == mask_SORT_3)) && (1023 == mask_SORT_5)) RESULT: Ultimate proved your program to be correct! [2025-03-08 07:43:53,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE