./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 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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-?-551b009-m [2025-01-09 06:15:18,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 06:15:18,092 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-01-09 06:15:18,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 06:15:18,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 06:15:18,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 06:15:18,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 06:15:18,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 06:15:18,122 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 06:15:18,123 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 06:15:18,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 06:15:18,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 06:15:18,124 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 06:15:18,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 06:15:18,124 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 06:15:18,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 06:15:18,124 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 06:15:18,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 06:15:18,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 06:15:18,125 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 06:15:18,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 06:15:18,125 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 06:15:18,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 06:15:18,125 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 06:15:18,125 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 06:15:18,125 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 06:15:18,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 06:15:18,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 06:15:18,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 06:15:18,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:15:18,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 06:15:18,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 06:15:18,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 06:15:18,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 06:15:18,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:15:18,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 06:15:18,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 06:15:18,127 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 06:15:18,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 06:15:18,127 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 06:15:18,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 06:15:18,127 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 06:15:18,127 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 06:15:18,127 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 06:15:18,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 06:15:18,127 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-jdk21/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 [2025-01-09 06:15:18,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 06:15:18,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 06:15:18,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 06:15:18,362 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 06:15:18,363 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 06:15:18,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c [2025-01-09 06:15:19,468 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cf222386c/3e7c8805a76b42498a81a329d1655dd9/FLAGbb53f55b5 [2025-01-09 06:15:19,743 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 06:15:19,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c [2025-01-09 06:15:19,751 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cf222386c/3e7c8805a76b42498a81a329d1655dd9/FLAGbb53f55b5 [2025-01-09 06:15:20,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cf222386c/3e7c8805a76b42498a81a329d1655dd9 [2025-01-09 06:15:20,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 06:15:20,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 06:15:20,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 06:15:20,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 06:15:20,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 06:15:20,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d23d07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20, skipping insertion in model container [2025-01-09 06:15:20,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,060 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 06:15:20,144 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c[1251,1264] [2025-01-09 06:15:20,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 06:15:20,279 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 06:15:20,286 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c[1251,1264] [2025-01-09 06:15:20,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 06:15:20,361 INFO L204 MainTranslator]: Completed translation [2025-01-09 06:15:20,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20 WrapperNode [2025-01-09 06:15:20,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 06:15:20,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 06:15:20,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 06:15:20,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 06:15:20,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,439 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 758 [2025-01-09 06:15:20,440 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 06:15:20,441 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 06:15:20,441 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 06:15:20,441 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 06:15:20,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,467 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,508 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]. [2025-01-09 06:15:20,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,536 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 06:15:20,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 06:15:20,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 06:15:20,587 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 06:15:20,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (1/1) ... [2025-01-09 06:15:20,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:15:20,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:15:20,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 06:15:20,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 06:15:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 06:15:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 06:15:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 06:15:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 06:15:20,781 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 06:15:20,782 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 06:15:21,613 INFO L? ?]: Removed 427 outVars from TransFormulas that were not future-live. [2025-01-09 06:15:21,613 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 06:15:21,623 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 06:15:21,625 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 06:15:21,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:15:21 BoogieIcfgContainer [2025-01-09 06:15:21,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 06:15:21,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 06:15:21,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 06:15:21,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 06:15:21,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 06:15:20" (1/3) ... [2025-01-09 06:15:21,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1aad1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:15:21, skipping insertion in model container [2025-01-09 06:15:21,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:20" (2/3) ... [2025-01-09 06:15:21,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1aad1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:15:21, skipping insertion in model container [2025-01-09 06:15:21,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:15:21" (3/3) ... [2025-01-09 06:15:21,632 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.Huffman_enc.c [2025-01-09 06:15:21,650 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 06:15:21,651 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. [2025-01-09 06:15:21,707 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 06:15:21,724 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;@58586f08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 06:15:21,724 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 06:15:21,727 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) [2025-01-09 06:15:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 06:15:21,731 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:15:21,731 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:15:21,732 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:15:21,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:15:21,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1364142940, now seen corresponding path program 1 times [2025-01-09 06:15:21,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:15:21,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175068246] [2025-01-09 06:15:21,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:15:21,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:15:21,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 06:15:21,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 06:15:21,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:15:21,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:15:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:15:22,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:15:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175068246] [2025-01-09 06:15:22,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175068246] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:15:22,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:15:22,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 06:15:22,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357583550] [2025-01-09 06:15:22,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:15:22,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 06:15:22,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:15:22,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 06:15:22,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 06:15:22,167 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) [2025-01-09 06:15:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:15:22,219 INFO L93 Difference]: Finished difference Result 325 states and 483 transitions. [2025-01-09 06:15:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 06:15:22,221 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 [2025-01-09 06:15:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:15:22,228 INFO L225 Difference]: With dead ends: 325 [2025-01-09 06:15:22,228 INFO L226 Difference]: Without dead ends: 165 [2025-01-09 06:15:22,232 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 [2025-01-09 06:15:22,234 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:15:22,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 711 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:15:22,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-01-09 06:15:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2025-01-09 06:15:22,264 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) [2025-01-09 06:15:22,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 243 transitions. [2025-01-09 06:15:22,271 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 243 transitions. Word has length 19 [2025-01-09 06:15:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:15:22,271 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 243 transitions. [2025-01-09 06:15:22,271 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) [2025-01-09 06:15:22,271 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 243 transitions. [2025-01-09 06:15:22,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-09 06:15:22,272 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:15:22,272 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] [2025-01-09 06:15:22,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 06:15:22,273 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:15:22,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:15:22,274 INFO L85 PathProgramCache]: Analyzing trace with hash 662937064, now seen corresponding path program 1 times [2025-01-09 06:15:22,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:15:22,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819513135] [2025-01-09 06:15:22,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:15:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:15:22,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 06:15:22,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 06:15:22,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:15:22,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:15:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:15:22,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:15:22,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819513135] [2025-01-09 06:15:22,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819513135] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:15:22,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:15:22,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 06:15:22,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108297219] [2025-01-09 06:15:22,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:15:22,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 06:15:22,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:15:22,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 06:15:22,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 06:15:22,433 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) [2025-01-09 06:15:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:15:22,482 INFO L93 Difference]: Finished difference Result 326 states and 481 transitions. [2025-01-09 06:15:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 06:15:22,483 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 [2025-01-09 06:15:22,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:15:22,484 INFO L225 Difference]: With dead ends: 326 [2025-01-09 06:15:22,484 INFO L226 Difference]: Without dead ends: 167 [2025-01-09 06:15:22,484 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 [2025-01-09 06:15:22,485 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:15:22,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 707 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:15:22,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2025-01-09 06:15:22,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2025-01-09 06:15:22,490 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) [2025-01-09 06:15:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 245 transitions. [2025-01-09 06:15:22,492 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 245 transitions. Word has length 20 [2025-01-09 06:15:22,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:15:22,493 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 245 transitions. [2025-01-09 06:15:22,493 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) [2025-01-09 06:15:22,493 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 245 transitions. [2025-01-09 06:15:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 06:15:22,493 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:15:22,493 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] [2025-01-09 06:15:22,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 06:15:22,494 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:15:22,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:15:22,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2021753347, now seen corresponding path program 1 times [2025-01-09 06:15:22,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:15:22,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085155222] [2025-01-09 06:15:22,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:15:22,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:15:22,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 06:15:22,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 06:15:22,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:15:22,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:15:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:15:23,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:15:23,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085155222] [2025-01-09 06:15:23,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085155222] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:15:23,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:15:23,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 06:15:23,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559308786] [2025-01-09 06:15:23,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:15:23,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 06:15:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:15:23,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 06:15:23,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 06:15:23,095 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) [2025-01-09 06:15:23,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:15:23,167 INFO L93 Difference]: Finished difference Result 336 states and 494 transitions. [2025-01-09 06:15:23,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 06:15:23,167 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 [2025-01-09 06:15:23,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:15:23,169 INFO L225 Difference]: With dead ends: 336 [2025-01-09 06:15:23,169 INFO L226 Difference]: Without dead ends: 175 [2025-01-09 06:15:23,169 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 [2025-01-09 06:15:23,170 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 249 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:15:23,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 935 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:15:23,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-01-09 06:15:23,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2025-01-09 06:15:23,184 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) [2025-01-09 06:15:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 254 transitions. [2025-01-09 06:15:23,187 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 254 transitions. Word has length 21 [2025-01-09 06:15:23,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:15:23,188 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 254 transitions. [2025-01-09 06:15:23,188 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) [2025-01-09 06:15:23,188 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 254 transitions. [2025-01-09 06:15:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 06:15:23,188 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:15:23,189 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] [2025-01-09 06:15:23,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 06:15:23,189 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:15:23,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:15:23,189 INFO L85 PathProgramCache]: Analyzing trace with hash 578776285, now seen corresponding path program 1 times [2025-01-09 06:15:23,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:15:23,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992149759] [2025-01-09 06:15:23,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:15:23,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:15:23,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 06:15:23,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 06:15:23,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:15:23,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:15:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:15:23,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:15:23,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992149759] [2025-01-09 06:15:23,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992149759] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:15:23,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:15:23,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 06:15:23,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89517250] [2025-01-09 06:15:23,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:15:23,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 06:15:23,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:15:23,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 06:15:23,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 06:15:23,302 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) [2025-01-09 06:15:23,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:15:23,353 INFO L93 Difference]: Finished difference Result 494 states and 721 transitions. [2025-01-09 06:15:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 06:15:23,353 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 [2025-01-09 06:15:23,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:15:23,355 INFO L225 Difference]: With dead ends: 494 [2025-01-09 06:15:23,355 INFO L226 Difference]: Without dead ends: 326 [2025-01-09 06:15:23,355 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 [2025-01-09 06:15:23,356 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 212 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:15:23,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 929 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:15:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2025-01-09 06:15:23,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 181. [2025-01-09 06:15:23,369 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) [2025-01-09 06:15:23,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 263 transitions. [2025-01-09 06:15:23,370 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 263 transitions. Word has length 22 [2025-01-09 06:15:23,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:15:23,370 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 263 transitions. [2025-01-09 06:15:23,370 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) [2025-01-09 06:15:23,370 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 263 transitions. [2025-01-09 06:15:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 06:15:23,371 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:15:23,371 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] [2025-01-09 06:15:23,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 06:15:23,371 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:15:23,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:15:23,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1145287578, now seen corresponding path program 1 times [2025-01-09 06:15:23,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:15:23,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095581500] [2025-01-09 06:15:23,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:15:23,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:15:23,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 06:15:23,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 06:15:23,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:15:23,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 06:15:23,398 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 06:15:23,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 06:15:23,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 06:15:23,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:15:23,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 06:15:23,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 06:15:23,460 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 06:15:23,460 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 06:15:23,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 06:15:23,464 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-01-09 06:15:23,516 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 06:15:23,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 06:15:23 BoogieIcfgContainer [2025-01-09 06:15:23,520 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 06:15:23,521 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 06:15:23,521 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 06:15:23,521 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 06:15:23,521 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:15:21" (3/4) ... [2025-01-09 06:15:23,523 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-09 06:15:23,523 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 06:15:23,525 INFO L158 Benchmark]: Toolchain (without parser) took 3484.69ms. Allocated memory was 142.6MB in the beginning and 302.0MB in the end (delta: 159.4MB). Free memory was 105.5MB in the beginning and 215.7MB in the end (delta: -110.2MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. [2025-01-09 06:15:23,525 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 06:15:23,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.12ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 82.9MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-09 06:15:23,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.92ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 68.1MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 06:15:23,526 INFO L158 Benchmark]: Boogie Preprocessor took 145.52ms. Allocated memory is still 142.6MB. Free memory was 68.1MB in the beginning and 58.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 06:15:23,526 INFO L158 Benchmark]: RCFGBuilder took 1038.29ms. Allocated memory is still 142.6MB. Free memory was 58.5MB in the beginning and 73.2MB in the end (delta: -14.7MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2025-01-09 06:15:23,527 INFO L158 Benchmark]: TraceAbstraction took 1893.23ms. Allocated memory was 142.6MB in the beginning and 302.0MB in the end (delta: 159.4MB). Free memory was 72.3MB in the beginning and 215.7MB in the end (delta: -143.4MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2025-01-09 06:15:23,527 INFO L158 Benchmark]: Witness Printer took 3.34ms. Allocated memory is still 302.0MB. Free memory was 215.7MB in the beginning and 215.7MB in the end (delta: 60.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 06:15:23,528 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.12ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 82.9MB in the end (delta: 22.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.92ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 68.1MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 145.52ms. Allocated memory is still 142.6MB. Free memory was 68.1MB in the beginning and 58.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1038.29ms. Allocated memory is still 142.6MB. Free memory was 58.5MB in the beginning and 73.2MB in the end (delta: -14.7MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1893.23ms. Allocated memory was 142.6MB in the beginning and 302.0MB in the end (delta: 159.4MB). Free memory was 72.3MB in the beginning and 215.7MB in the end (delta: -143.4MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * Witness Printer took 3.34ms. Allocated memory is still 302.0MB. Free memory was 215.7MB in the beginning and 215.7MB in the end (delta: 60.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 461 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 461 mSDsluCounter, 3282 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2333 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 949 mSDtfsCounter, 89 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: 0.1s 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 [2025-01-09 06:15:23,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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-?-551b009-m [2025-01-09 06:15:25,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 06:15:25,804 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-01-09 06:15:25,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 06:15:25,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 06:15:25,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 06:15:25,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 06:15:25,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 06:15:25,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 06:15:25,829 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 06:15:25,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 06:15:25,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 06:15:25,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 06:15:25,829 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 06:15:25,829 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 06:15:25,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 06:15:25,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 06:15:25,829 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 06:15:25,830 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 06:15:25,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 06:15:25,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 06:15:25,830 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 06:15:25,830 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-09 06:15:25,830 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-09 06:15:25,830 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 06:15:25,830 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 06:15:25,830 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 06:15:25,830 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 06:15:25,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 06:15:25,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 06:15:25,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 06:15:25,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:15:25,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 06:15:25,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 06:15:25,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 06:15:25,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 06:15:25,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:15:25,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 06:15:25,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 06:15:25,832 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 06:15:25,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 06:15:25,832 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-09 06:15:25,832 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-09 06:15:25,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 06:15:25,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 06:15:25,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 06:15:25,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 06:15:25,832 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-jdk21/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 [2025-01-09 06:15:26,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 06:15:26,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 06:15:26,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 06:15:26,126 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 06:15:26,126 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 06:15:26,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c [2025-01-09 06:15:27,335 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/045906e89/4f9adfd3709e4bfd8186fe5f0c9a98cd/FLAGe88ce01c2 [2025-01-09 06:15:27,540 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 06:15:27,543 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c [2025-01-09 06:15:27,553 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/045906e89/4f9adfd3709e4bfd8186fe5f0c9a98cd/FLAGe88ce01c2 [2025-01-09 06:15:27,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/045906e89/4f9adfd3709e4bfd8186fe5f0c9a98cd [2025-01-09 06:15:27,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 06:15:27,907 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 06:15:27,908 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 06:15:27,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 06:15:27,911 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 06:15:27,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:15:27" (1/1) ... [2025-01-09 06:15:27,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38183674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:27, skipping insertion in model container [2025-01-09 06:15:27,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:15:27" (1/1) ... [2025-01-09 06:15:27,936 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 06:15:28,065 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c[1251,1264] [2025-01-09 06:15:28,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 06:15:28,163 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 06:15:28,172 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_enc.c[1251,1264] [2025-01-09 06:15:28,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 06:15:28,255 INFO L204 MainTranslator]: Completed translation [2025-01-09 06:15:28,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28 WrapperNode [2025-01-09 06:15:28,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 06:15:28,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 06:15:28,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 06:15:28,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 06:15:28,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,306 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 446 [2025-01-09 06:15:28,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 06:15:28,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 06:15:28,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 06:15:28,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 06:15:28,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,317 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,341 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]. [2025-01-09 06:15:28,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,355 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,363 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,368 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 06:15:28,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 06:15:28,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 06:15:28,376 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 06:15:28,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (1/1) ... [2025-01-09 06:15:28,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:15:28,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:15:28,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 06:15:28,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 06:15:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 06:15:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-09 06:15:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 06:15:28,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 06:15:28,544 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 06:15:28,545 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 06:15:29,005 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2025-01-09 06:15:29,006 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 06:15:29,011 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 06:15:29,012 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 06:15:29,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:15:29 BoogieIcfgContainer [2025-01-09 06:15:29,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 06:15:29,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 06:15:29,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 06:15:29,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 06:15:29,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 06:15:27" (1/3) ... [2025-01-09 06:15:29,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495d5b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:15:29, skipping insertion in model container [2025-01-09 06:15:29,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:15:28" (2/3) ... [2025-01-09 06:15:29,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495d5b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:15:29, skipping insertion in model container [2025-01-09 06:15:29,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:15:29" (3/3) ... [2025-01-09 06:15:29,023 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.Huffman_enc.c [2025-01-09 06:15:29,033 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 06:15:29,035 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. [2025-01-09 06:15:29,067 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 06:15:29,075 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;@5e448527, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 06:15:29,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 06:15:29,079 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) [2025-01-09 06:15:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-09 06:15:29,083 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:15:29,083 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-09 06:15:29,084 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:15:29,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:15:29,088 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2025-01-09 06:15:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 06:15:29,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537823081] [2025-01-09 06:15:29,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:15:29,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:15:29,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:15:29,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 06:15:29,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 06:15:29,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-09 06:15:29,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-09 06:15:29,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:15:29,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:15:29,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 06:15:29,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:15:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:15:29,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:15:29,381 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 06:15:29,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537823081] [2025-01-09 06:15:29,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537823081] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:15:29,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:15:29,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 06:15:29,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727011582] [2025-01-09 06:15:29,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:15:29,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 06:15:29,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 06:15:29,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 06:15:29,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 06:15:29,398 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) [2025-01-09 06:15:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:15:29,425 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2025-01-09 06:15:29,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 06:15:29,427 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 [2025-01-09 06:15:29,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:15:29,430 INFO L225 Difference]: With dead ends: 13 [2025-01-09 06:15:29,430 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 06:15:29,432 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 [2025-01-09 06:15:29,433 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 [2025-01-09 06:15:29,434 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] [2025-01-09 06:15:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 06:15:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 06:15:29,445 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) [2025-01-09 06:15:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 06:15:29,447 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2025-01-09 06:15:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:15:29,448 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 06:15:29,448 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) [2025-01-09 06:15:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 06:15:29,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 06:15:29,449 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 06:15:29,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 06:15:29,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 06:15:29,657 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-09 06:15:29,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 06:15:29,671 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 06:15:29,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 06:15:29 BoogieIcfgContainer [2025-01-09 06:15:29,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 06:15:29,678 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 06:15:29,678 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 06:15:29,678 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 06:15:29,679 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:15:29" (3/4) ... [2025-01-09 06:15:29,680 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 06:15:29,692 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-01-09 06:15:29,693 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-09 06:15:29,693 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 06:15:29,694 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 06:15:29,759 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 06:15:29,759 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 06:15:29,759 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 06:15:29,760 INFO L158 Benchmark]: Toolchain (without parser) took 1852.84ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 42.8MB in the end (delta: 49.1MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. [2025-01-09 06:15:29,760 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 83.9MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 06:15:29,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.95ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 70.4MB in the end (delta: 21.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 06:15:29,760 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.63ms. Allocated memory is still 117.4MB. Free memory was 70.2MB in the beginning and 66.4MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 06:15:29,761 INFO L158 Benchmark]: Boogie Preprocessor took 64.56ms. Allocated memory is still 117.4MB. Free memory was 66.4MB in the beginning and 62.1MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 06:15:29,761 INFO L158 Benchmark]: RCFGBuilder took 636.26ms. Allocated memory is still 117.4MB. Free memory was 62.1MB in the beginning and 78.2MB in the end (delta: -16.0MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2025-01-09 06:15:29,761 INFO L158 Benchmark]: TraceAbstraction took 664.41ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 51.9MB in the end (delta: 26.3MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2025-01-09 06:15:29,761 INFO L158 Benchmark]: Witness Printer took 80.98ms. Allocated memory is still 117.4MB. Free memory was 51.9MB in the beginning and 42.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 06:15:29,762 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 83.9MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.95ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 70.4MB in the end (delta: 21.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.63ms. Allocated memory is still 117.4MB. Free memory was 70.2MB in the beginning and 66.4MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 64.56ms. Allocated memory is still 117.4MB. Free memory was 66.4MB in the beginning and 62.1MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 636.26ms. Allocated memory is still 117.4MB. Free memory was 62.1MB in the beginning and 78.2MB in the end (delta: -16.0MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * TraceAbstraction took 664.41ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 51.9MB in the end (delta: 26.3MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * Witness Printer took 80.98ms. Allocated memory is still 117.4MB. Free memory was 51.9MB in the beginning and 42.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, 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: 0.0s 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]: Loop Invariant Derived loop invariant: (((0 == var_9) && (1 == mask_SORT_3)) && (1023 == mask_SORT_5)) RESULT: Ultimate proved your program to be correct! [2025-01-09 06:15:29,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE