./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5b0af5d1e81b8ef08a8c715e25cc88665897ce7d17ecd1eab38dd9c44cbe0a9d --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 22:49:16,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 22:49:16,138 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-16 22:49:16,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 22:49:16,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 22:49:16,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 22:49:16,168 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 22:49:16,168 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 22:49:16,169 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 22:49:16,169 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 22:49:16,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 22:49:16,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 22:49:16,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 22:49:16,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 22:49:16,169 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 22:49:16,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 22:49:16,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 22:49:16,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 22:49:16,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 22:49:16,170 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 22:49:16,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 22:49:16,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 22:49:16,170 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 22:49:16,170 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 22:49:16,170 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 22:49:16,170 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 22:49:16,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 22:49:16,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 22:49:16,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 22:49:16,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:49:16,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 22:49:16,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 22:49:16,171 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 22:49:16,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 22:49:16,171 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 22:49:16,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 22:49:16,172 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 22:49:16,172 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 22:49:16,172 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 22:49:16,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 22:49:16,172 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b0af5d1e81b8ef08a8c715e25cc88665897ce7d17ecd1eab38dd9c44cbe0a9d [2025-03-16 22:49:16,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 22:49:16,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 22:49:16,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 22:49:16,383 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 22:49:16,383 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 22:49:16,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p2.c [2025-03-16 22:49:17,518 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0784f0af8/45610a7431a74d09b26e09be190b4b30/FLAGc068cef73 [2025-03-16 22:49:17,798 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 22:49:17,800 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p2.c [2025-03-16 22:49:17,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0784f0af8/45610a7431a74d09b26e09be190b4b30/FLAGc068cef73 [2025-03-16 22:49:17,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0784f0af8/45610a7431a74d09b26e09be190b4b30 [2025-03-16 22:49:17,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 22:49:17,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 22:49:17,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 22:49:17,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 22:49:17,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 22:49:17,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:49:17" (1/1) ... [2025-03-16 22:49:17,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ccb6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:17, skipping insertion in model container [2025-03-16 22:49:17,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:49:17" (1/1) ... [2025-03-16 22:49:17,883 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 22:49:18,021 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p2.c[1260,1273] [2025-03-16 22:49:18,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:49:18,298 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 22:49:18,305 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p2.c[1260,1273] [2025-03-16 22:49:18,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:49:18,459 INFO L204 MainTranslator]: Completed translation [2025-03-16 22:49:18,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18 WrapperNode [2025-03-16 22:49:18,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 22:49:18,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 22:49:18,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 22:49:18,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 22:49:18,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:18,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:18,903 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4466 [2025-03-16 22:49:18,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 22:49:18,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 22:49:18,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 22:49:18,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 22:49:18,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:18,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:18,991 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:19,104 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 22:49:19,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:19,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:19,173 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:19,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:19,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:19,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:19,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 22:49:19,270 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 22:49:19,270 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 22:49:19,270 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 22:49:19,271 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (1/1) ... [2025-03-16 22:49:19,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:49:19,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:49:19,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 22:49:19,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 22:49:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 22:49:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 22:49:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 22:49:19,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 22:49:19,576 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 22:49:19,578 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 22:49:23,177 INFO L? ?]: Removed 2653 outVars from TransFormulas that were not future-live. [2025-03-16 22:49:23,177 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 22:49:23,339 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 22:49:23,342 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 22:49:23,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:49:23 BoogieIcfgContainer [2025-03-16 22:49:23,342 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 22:49:23,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 22:49:23,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 22:49:23,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 22:49:23,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 10:49:17" (1/3) ... [2025-03-16 22:49:23,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e2467a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:49:23, skipping insertion in model container [2025-03-16 22:49:23,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:18" (2/3) ... [2025-03-16 22:49:23,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e2467a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:49:23, skipping insertion in model container [2025-03-16 22:49:23,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:49:23" (3/3) ... [2025-03-16 22:49:23,351 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p2.c [2025-03-16 22:49:23,363 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 22:49:23,365 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_arrays_vsa16a_p2.c that has 1 procedures, 1333 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 22:49:23,435 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 22:49:23,444 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;@422fcde0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 22:49:23,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 22:49:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 1333 states, 1331 states have (on average 1.5003756574004508) internal successors, (1997), 1332 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-16 22:49:23,456 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:49:23,456 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:49:23,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:49:23,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:49:23,461 INFO L85 PathProgramCache]: Analyzing trace with hash -758351794, now seen corresponding path program 1 times [2025-03-16 22:49:23,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:49:23,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976666144] [2025-03-16 22:49:23,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:49:23,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:49:23,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-16 22:49:23,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-16 22:49:23,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:49:23,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:49:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:49:23,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:49:23,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976666144] [2025-03-16 22:49:23,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976666144] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:49:23,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:49:23,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:49:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895648820] [2025-03-16 22:49:24,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:49:24,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 22:49:24,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:49:24,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 22:49:24,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:49:24,027 INFO L87 Difference]: Start difference. First operand has 1333 states, 1331 states have (on average 1.5003756574004508) internal successors, (1997), 1332 states have internal predecessors, (1997), 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 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:24,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:49:24,672 INFO L93 Difference]: Finished difference Result 2613 states and 3917 transitions. [2025-03-16 22:49:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 22:49:24,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2025-03-16 22:49:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:49:24,690 INFO L225 Difference]: With dead ends: 2613 [2025-03-16 22:49:24,692 INFO L226 Difference]: Without dead ends: 1333 [2025-03-16 22:49:24,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:49:24,702 INFO L435 NwaCegarLoop]: 1661 mSDtfsCounter, 0 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4978 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 22:49:24,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4978 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 22:49:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2025-03-16 22:49:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1333. [2025-03-16 22:49:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 1.4984984984984986) internal successors, (1996), 1332 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1996 transitions. [2025-03-16 22:49:24,782 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1996 transitions. Word has length 36 [2025-03-16 22:49:24,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:49:24,782 INFO L471 AbstractCegarLoop]: Abstraction has 1333 states and 1996 transitions. [2025-03-16 22:49:24,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:24,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1996 transitions. [2025-03-16 22:49:24,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-16 22:49:24,783 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:49:24,783 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:49:24,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 22:49:24,784 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:49:24,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:49:24,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2029387784, now seen corresponding path program 1 times [2025-03-16 22:49:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:49:24,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692755238] [2025-03-16 22:49:24,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:49:24,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:49:24,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-16 22:49:24,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-16 22:49:24,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:49:24,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:49:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:49:24,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:49:24,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692755238] [2025-03-16 22:49:24,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692755238] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:49:24,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:49:24,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:49:24,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927232633] [2025-03-16 22:49:24,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:49:24,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 22:49:24,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:49:24,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 22:49:24,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:49:24,978 INFO L87 Difference]: Start difference. First operand 1333 states and 1996 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:49:25,546 INFO L93 Difference]: Finished difference Result 2615 states and 3916 transitions. [2025-03-16 22:49:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 22:49:25,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 37 [2025-03-16 22:49:25,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:49:25,551 INFO L225 Difference]: With dead ends: 2615 [2025-03-16 22:49:25,551 INFO L226 Difference]: Without dead ends: 1335 [2025-03-16 22:49:25,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:49:25,553 INFO L435 NwaCegarLoop]: 1661 mSDtfsCounter, 0 mSDsluCounter, 3314 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4975 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 22:49:25,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4975 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 22:49:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2025-03-16 22:49:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1335. [2025-03-16 22:49:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1334 states have (on average 1.497751124437781) internal successors, (1998), 1334 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1998 transitions. [2025-03-16 22:49:25,582 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1998 transitions. Word has length 37 [2025-03-16 22:49:25,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:49:25,582 INFO L471 AbstractCegarLoop]: Abstraction has 1335 states and 1998 transitions. [2025-03-16 22:49:25,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:25,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1998 transitions. [2025-03-16 22:49:25,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-16 22:49:25,583 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:49:25,583 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:49:25,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 22:49:25,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:49:25,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:49:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash -849967735, now seen corresponding path program 1 times [2025-03-16 22:49:25,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:49:25,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155174998] [2025-03-16 22:49:25,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:49:25,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:49:25,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-16 22:49:25,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-16 22:49:25,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:49:25,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:49:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:49:25,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:49:25,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155174998] [2025-03-16 22:49:25,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155174998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:49:25,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:49:25,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:49:25,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799516200] [2025-03-16 22:49:25,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:49:25,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 22:49:25,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:49:25,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 22:49:25,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 22:49:25,922 INFO L87 Difference]: Start difference. First operand 1335 states and 1998 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:26,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:49:26,530 INFO L93 Difference]: Finished difference Result 2615 states and 3915 transitions. [2025-03-16 22:49:26,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 22:49:26,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 38 [2025-03-16 22:49:26,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:49:26,537 INFO L225 Difference]: With dead ends: 2615 [2025-03-16 22:49:26,537 INFO L226 Difference]: Without dead ends: 1333 [2025-03-16 22:49:26,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-16 22:49:26,541 INFO L435 NwaCegarLoop]: 1656 mSDtfsCounter, 1965 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 4964 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 22:49:26,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1965 Valid, 4964 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 22:49:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2025-03-16 22:49:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1333. [2025-03-16 22:49:26,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 1.496996996996997) internal successors, (1994), 1332 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:26,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1994 transitions. [2025-03-16 22:49:26,564 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1994 transitions. Word has length 38 [2025-03-16 22:49:26,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:49:26,564 INFO L471 AbstractCegarLoop]: Abstraction has 1333 states and 1994 transitions. [2025-03-16 22:49:26,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:26,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1994 transitions. [2025-03-16 22:49:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-16 22:49:26,566 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:49:26,566 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:49:26,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 22:49:26,567 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:49:26,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:49:26,567 INFO L85 PathProgramCache]: Analyzing trace with hash -317008889, now seen corresponding path program 1 times [2025-03-16 22:49:26,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:49:26,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293245111] [2025-03-16 22:49:26,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:49:26,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:49:26,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-16 22:49:26,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-16 22:49:26,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:49:26,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 22:49:26,626 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-16 22:49:26,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-16 22:49:26,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-16 22:49:26,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:49:26,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 22:49:26,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-16 22:49:26,723 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-16 22:49:26,724 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 22:49:26,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 22:49:26,728 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-16 22:49:26,765 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-16 22:49:26,779 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 22:49:26,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 10:49:26 BoogieIcfgContainer [2025-03-16 22:49:26,782 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 22:49:26,782 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 22:49:26,782 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 22:49:26,782 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 22:49:26,783 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:49:23" (3/4) ... [2025-03-16 22:49:26,784 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-16 22:49:26,785 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 22:49:26,786 INFO L158 Benchmark]: Toolchain (without parser) took 8948.56ms. Allocated memory was 142.6MB in the beginning and 755.0MB in the end (delta: 612.4MB). Free memory was 109.3MB in the beginning and 567.8MB in the end (delta: -458.5MB). Peak memory consumption was 156.2MB. Max. memory is 16.1GB. [2025-03-16 22:49:26,786 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory was 124.2MB in the beginning and 123.9MB in the end (delta: 293.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:49:26,786 INFO L158 Benchmark]: CACSL2BoogieTranslator took 621.98ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 89.4MB in the end (delta: 19.9MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. [2025-03-16 22:49:26,786 INFO L158 Benchmark]: Boogie Procedure Inliner took 442.51ms. Allocated memory was 142.6MB in the beginning and 377.5MB in the end (delta: 234.9MB). Free memory was 89.4MB in the beginning and 256.6MB in the end (delta: -167.2MB). Peak memory consumption was 106.1MB. Max. memory is 16.1GB. [2025-03-16 22:49:26,787 INFO L158 Benchmark]: Boogie Preprocessor took 364.74ms. Allocated memory is still 377.5MB. Free memory was 256.6MB in the beginning and 225.1MB in the end (delta: 31.5MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2025-03-16 22:49:26,787 INFO L158 Benchmark]: IcfgBuilder took 4073.02ms. Allocated memory was 377.5MB in the beginning and 755.0MB in the end (delta: 377.5MB). Free memory was 225.1MB in the beginning and 569.1MB in the end (delta: -343.9MB). Peak memory consumption was 178.3MB. Max. memory is 16.1GB. [2025-03-16 22:49:26,787 INFO L158 Benchmark]: TraceAbstraction took 3436.90ms. Allocated memory is still 755.0MB. Free memory was 569.1MB in the beginning and 567.8MB in the end (delta: 1.2MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2025-03-16 22:49:26,787 INFO L158 Benchmark]: Witness Printer took 3.01ms. Allocated memory is still 755.0MB. Free memory was 567.8MB in the beginning and 567.8MB in the end (delta: 42.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:49:26,788 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory was 124.2MB in the beginning and 123.9MB in the end (delta: 293.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 621.98ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 89.4MB in the end (delta: 19.9MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 442.51ms. Allocated memory was 142.6MB in the beginning and 377.5MB in the end (delta: 234.9MB). Free memory was 89.4MB in the beginning and 256.6MB in the end (delta: -167.2MB). Peak memory consumption was 106.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 364.74ms. Allocated memory is still 377.5MB. Free memory was 256.6MB in the beginning and 225.1MB in the end (delta: 31.5MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. * IcfgBuilder took 4073.02ms. Allocated memory was 377.5MB in the beginning and 755.0MB in the end (delta: 377.5MB). Free memory was 225.1MB in the beginning and 569.1MB in the end (delta: -343.9MB). Peak memory consumption was 178.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3436.90ms. Allocated memory is still 755.0MB. Free memory was 569.1MB in the beginning and 567.8MB in the end (delta: 1.2MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Witness Printer took 3.01ms. Allocated memory is still 755.0MB. Free memory was 567.8MB in the beginning and 567.8MB in the end (delta: 42.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 201. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L32] const SORT_38 mask_SORT_38 = (SORT_38)-1 >> (sizeof(SORT_38) * 8 - 12); [L33] const SORT_38 msb_SORT_38 = (SORT_38)1 << (12 - 1); [L35] const SORT_44 mask_SORT_44 = (SORT_44)-1 >> (sizeof(SORT_44) * 8 - 3); [L36] const SORT_44 msb_SORT_44 = (SORT_44)1 << (3 - 1); [L38] const SORT_71 mask_SORT_71 = (SORT_71)-1 >> (sizeof(SORT_71) * 8 - 2); [L39] const SORT_71 msb_SORT_71 = (SORT_71)1 << (2 - 1); [L41] const SORT_230 mask_SORT_230 = (SORT_230)-1 >> (sizeof(SORT_230) * 8 - 4); [L42] const SORT_230 msb_SORT_230 = (SORT_230)1 << (4 - 1); [L44] const SORT_232 mask_SORT_232 = (SORT_232)-1 >> (sizeof(SORT_232) * 8 - 5); [L45] const SORT_232 msb_SORT_232 = (SORT_232)1 << (5 - 1); [L47] const SORT_234 mask_SORT_234 = (SORT_234)-1 >> (sizeof(SORT_234) * 8 - 6); [L48] const SORT_234 msb_SORT_234 = (SORT_234)1 << (6 - 1); [L50] const SORT_236 mask_SORT_236 = (SORT_236)-1 >> (sizeof(SORT_236) * 8 - 7); [L51] const SORT_236 msb_SORT_236 = (SORT_236)1 << (7 - 1); [L53] const SORT_238 mask_SORT_238 = (SORT_238)-1 >> (sizeof(SORT_238) * 8 - 8); [L54] const SORT_238 msb_SORT_238 = (SORT_238)1 << (8 - 1); [L56] const SORT_240 mask_SORT_240 = (SORT_240)-1 >> (sizeof(SORT_240) * 8 - 9); [L57] const SORT_240 msb_SORT_240 = (SORT_240)1 << (9 - 1); [L59] const SORT_242 mask_SORT_242 = (SORT_242)-1 >> (sizeof(SORT_242) * 8 - 10); [L60] const SORT_242 msb_SORT_242 = (SORT_242)1 << (10 - 1); [L62] const SORT_244 mask_SORT_244 = (SORT_244)-1 >> (sizeof(SORT_244) * 8 - 11); [L63] const SORT_244 msb_SORT_244 = (SORT_244)1 << (11 - 1); [L65] const SORT_247 mask_SORT_247 = (SORT_247)-1 >> (sizeof(SORT_247) * 8 - 13); [L66] const SORT_247 msb_SORT_247 = (SORT_247)1 << (13 - 1); [L68] const SORT_249 mask_SORT_249 = (SORT_249)-1 >> (sizeof(SORT_249) * 8 - 14); [L69] const SORT_249 msb_SORT_249 = (SORT_249)1 << (14 - 1); [L71] const SORT_251 mask_SORT_251 = (SORT_251)-1 >> (sizeof(SORT_251) * 8 - 15); [L72] const SORT_251 msb_SORT_251 = (SORT_251)1 << (15 - 1); [L74] const SORT_460 mask_SORT_460 = (SORT_460)-1 >> (sizeof(SORT_460) * 8 - 17); [L75] const SORT_460 msb_SORT_460 = (SORT_460)1 << (17 - 1); [L77] const SORT_3 var_6 = 0; [L78] const SORT_1 var_11 = 0; [L79] const SORT_1 var_22 = 1; [L80] const SORT_38 var_39 = 0; [L81] const SORT_44 var_45 = 0; [L82] const SORT_44 var_49 = 2; [L83] const SORT_44 var_53 = 1; [L84] const SORT_44 var_58 = 4; [L85] const SORT_44 var_60 = 5; [L86] const SORT_44 var_64 = 3; [L87] const SORT_71 var_73 = 0; [L88] const SORT_3 var_80 = 65535; [L89] const SORT_232 var_461 = 0; [L90] const SORT_236 var_507 = 5; [L91] const SORT_236 var_511 = 4; [L92] const SORT_236 var_515 = 3; [L93] const SORT_236 var_519 = 2; [L94] const SORT_236 var_523 = 1; [L95] const SORT_236 var_527 = 0; [L96] const SORT_38 var_561 = 2; [L98] SORT_1 input_2; [L99] SORT_3 input_4; [L100] SORT_3 input_5; [L101] SORT_3 input_68; [L102] SORT_3 input_69; [L103] SORT_3 input_70; [L104] SORT_3 input_79; [L105] SORT_3 input_88; [L106] SORT_3 input_89; [L107] SORT_3 input_90; [L108] SORT_3 input_93; [L109] SORT_3 input_111; [L110] SORT_3 input_112; [L111] SORT_3 input_113; [L112] SORT_3 input_116; [L113] SORT_3 input_118; [L114] SORT_71 input_132; [L115] SORT_71 input_133; [L116] SORT_71 input_134; [L118] EXPR __VERIFIER_nondet_ushort() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L118] SORT_3 state_7 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L119] EXPR __VERIFIER_nondet_ushort() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L119] SORT_3 state_9 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L120] EXPR __VERIFIER_nondet_ushort() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L120] SORT_3 state_13 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L121] EXPR __VERIFIER_nondet_ushort() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L121] SORT_3 state_15 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L122] EXPR __VERIFIER_nondet_ushort() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L122] SORT_3 state_26 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L123] EXPR __VERIFIER_nondet_ushort() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L123] SORT_3 state_28 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L124] EXPR __VERIFIER_nondet_ushort() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L124] SORT_3 state_30 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L125] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L125] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L126] EXPR __VERIFIER_nondet_ushort() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L126] SORT_3 state_34 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L127] EXPR __VERIFIER_nondet_ushort() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L127] SORT_3 state_36 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L128] EXPR __VERIFIER_nondet_ushort() & mask_SORT_38 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L128] SORT_38 state_40 = __VERIFIER_nondet_ushort() & mask_SORT_38; [L129] EXPR __VERIFIER_nondet_ushort() & mask_SORT_38 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L129] SORT_38 state_42 = __VERIFIER_nondet_ushort() & mask_SORT_38; [L130] EXPR __VERIFIER_nondet_uchar() & mask_SORT_44 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, var_11=0, var_22=1, var_39=0, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L130] SORT_44 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_44; [L132] SORT_3 init_8_arg_1 = var_6; [L133] state_7 = init_8_arg_1 [L134] SORT_3 init_10_arg_1 = var_6; [L135] state_9 = init_10_arg_1 [L136] SORT_3 init_14_arg_1 = var_6; [L137] state_13 = init_14_arg_1 [L138] SORT_3 init_16_arg_1 = var_6; [L139] state_15 = init_16_arg_1 [L140] SORT_3 init_27_arg_1 = var_6; [L141] state_26 = init_27_arg_1 [L142] SORT_3 init_29_arg_1 = var_6; [L143] state_28 = init_29_arg_1 [L144] SORT_3 init_31_arg_1 = var_6; [L145] state_30 = init_31_arg_1 [L146] SORT_1 init_33_arg_1 = var_11; [L147] state_32 = init_33_arg_1 [L148] SORT_3 init_35_arg_1 = var_6; [L149] state_34 = init_35_arg_1 [L150] SORT_3 init_37_arg_1 = var_6; [L151] state_36 = init_37_arg_1 [L152] SORT_38 init_41_arg_1 = var_39; [L153] state_40 = init_41_arg_1 [L154] SORT_38 init_43_arg_1 = var_39; [L155] state_42 = init_43_arg_1 [L156] SORT_44 init_47_arg_1 = var_45; [L157] state_46 = init_47_arg_1 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, state_13=0, state_15=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_40=0, state_42=0, state_46=0, state_7=0, state_9=0, var_11=0, var_22=1, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L160] input_2 = __VERIFIER_nondet_uchar() [L161] input_4 = __VERIFIER_nondet_ushort() [L162] input_5 = __VERIFIER_nondet_ushort() [L163] input_68 = __VERIFIER_nondet_ushort() [L164] input_69 = __VERIFIER_nondet_ushort() [L165] input_70 = __VERIFIER_nondet_ushort() [L166] input_79 = __VERIFIER_nondet_ushort() [L167] input_88 = __VERIFIER_nondet_ushort() [L168] input_89 = __VERIFIER_nondet_ushort() [L169] input_90 = __VERIFIER_nondet_ushort() [L170] input_93 = __VERIFIER_nondet_ushort() [L171] input_111 = __VERIFIER_nondet_ushort() [L172] input_112 = __VERIFIER_nondet_ushort() [L173] input_113 = __VERIFIER_nondet_ushort() [L174] input_116 = __VERIFIER_nondet_ushort() [L175] input_118 = __VERIFIER_nondet_ushort() [L176] input_132 = __VERIFIER_nondet_uchar() [L177] input_133 = __VERIFIER_nondet_uchar() [L178] input_134 = __VERIFIER_nondet_uchar() [L181] SORT_1 var_17_arg_0 = var_11; [L182] SORT_3 var_17_arg_1 = state_15; [L183] SORT_3 var_17_arg_2 = state_13; [L184] SORT_3 var_17 = var_17_arg_0 ? var_17_arg_1 : var_17_arg_2; [L185] SORT_1 var_12_arg_0 = var_11; [L186] SORT_3 var_12_arg_1 = state_9; [L187] SORT_3 var_12_arg_2 = state_7; [L188] SORT_3 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L189] SORT_1 var_18_arg_0 = var_11; [L190] SORT_3 var_18_arg_1 = var_17; [L191] SORT_3 var_18_arg_2 = var_12; [L192] SORT_3 var_18 = var_18_arg_0 ? var_18_arg_1 : var_18_arg_2; VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, state_13=0, state_15=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_40=0, state_42=0, state_46=0, state_7=0, state_9=0, var_11=0, var_18=0, var_22=1, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L193] EXPR var_18 & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, state_13=0, state_15=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_40=0, state_42=0, state_46=0, state_7=0, state_9=0, var_11=0, var_22=1, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L193] var_18 = var_18 & mask_SORT_3 [L194] SORT_3 var_19_arg_0 = var_18; [L195] SORT_3 var_19_arg_1 = var_6; [L196] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L197] SORT_1 var_23_arg_0 = var_19; [L198] SORT_1 var_23 = ~var_23_arg_0; [L199] SORT_1 var_24_arg_0 = var_22; [L200] SORT_1 var_24_arg_1 = var_23; VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, state_13=0, state_15=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_40=0, state_42=0, state_46=0, state_7=0, state_9=0, var_11=0, var_22=1, var_24_arg_0=1, var_24_arg_1=-2, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L201] EXPR var_24_arg_0 & var_24_arg_1 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, state_13=0, state_15=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_40=0, state_42=0, state_46=0, state_7=0, state_9=0, var_11=0, var_22=1, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L201] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L202] EXPR var_24 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_230=15, mask_SORT_232=31, mask_SORT_234=63, mask_SORT_236=127, mask_SORT_238=255, mask_SORT_240=511, mask_SORT_242=1023, mask_SORT_244=2047, mask_SORT_247=8191, mask_SORT_249=16383, mask_SORT_251=32767, mask_SORT_38=4095, mask_SORT_3=65535, mask_SORT_44=7, mask_SORT_71=3, state_13=0, state_15=0, state_26=0, state_28=0, state_30=0, state_32=0, state_34=0, state_36=0, state_40=0, state_42=0, state_46=0, state_7=0, state_9=0, var_11=0, var_22=1, var_45=0, var_461=0, var_49=2, var_507=5, var_511=4, var_515=3, var_519=2, var_523=1, var_527=0, var_53=1, var_561=2, var_58=4, var_60=5, var_64=3, var_6=0, var_73=0, var_80=65535] [L202] var_24 = var_24 & mask_SORT_1 [L203] SORT_1 bad_25_arg_0 = var_24; [L204] CALL __VERIFIER_assert(!(bad_25_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1333 locations, 1997 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1965 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1965 mSDsluCounter, 14917 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9939 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3015 IncrementalHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 4978 mSDtfsCounter, 3015 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1335occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-16 22:49:26,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5b0af5d1e81b8ef08a8c715e25cc88665897ce7d17ecd1eab38dd9c44cbe0a9d --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 22:49:28,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 22:49:28,769 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-03-16 22:49:28,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 22:49:28,774 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 22:49:28,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 22:49:28,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 22:49:28,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 22:49:28,802 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 22:49:28,802 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 22:49:28,802 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 22:49:28,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 22:49:28,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 22:49:28,803 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 22:49:28,803 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 22:49:28,803 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:49:28,804 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 22:49:28,804 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b0af5d1e81b8ef08a8c715e25cc88665897ce7d17ecd1eab38dd9c44cbe0a9d [2025-03-16 22:49:29,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 22:49:29,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 22:49:29,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 22:49:29,060 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 22:49:29,060 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 22:49:29,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p2.c [2025-03-16 22:49:30,196 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/effbf3124/f7578ba5a7a149f5bb17351c89434360/FLAG254c59b12 [2025-03-16 22:49:30,499 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 22:49:30,501 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p2.c [2025-03-16 22:49:30,520 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/effbf3124/f7578ba5a7a149f5bb17351c89434360/FLAG254c59b12 [2025-03-16 22:49:30,777 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/effbf3124/f7578ba5a7a149f5bb17351c89434360 [2025-03-16 22:49:30,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 22:49:30,781 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 22:49:30,782 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 22:49:30,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 22:49:30,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 22:49:30,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:49:30" (1/1) ... [2025-03-16 22:49:30,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3973d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:30, skipping insertion in model container [2025-03-16 22:49:30,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:49:30" (1/1) ... [2025-03-16 22:49:30,831 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 22:49:30,961 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p2.c[1260,1273] [2025-03-16 22:49:31,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:49:31,210 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 22:49:31,218 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p2.c[1260,1273] [2025-03-16 22:49:31,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:49:31,347 INFO L204 MainTranslator]: Completed translation [2025-03-16 22:49:31,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31 WrapperNode [2025-03-16 22:49:31,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 22:49:31,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 22:49:31,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 22:49:31,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 22:49:31,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,376 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,457 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1816 [2025-03-16 22:49:31,457 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 22:49:31,458 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 22:49:31,458 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 22:49:31,458 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 22:49:31,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,472 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,508 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]. [2025-03-16 22:49:31,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,542 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 22:49:31,577 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 22:49:31,577 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 22:49:31,577 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 22:49:31,579 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (1/1) ... [2025-03-16 22:49:31,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:49:31,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:49:31,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 22:49:31,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 22:49:31,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 22:49:31,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-16 22:49:31,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 22:49:31,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 22:49:31,863 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 22:49:31,865 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 22:49:33,606 INFO L? ?]: Removed 74 outVars from TransFormulas that were not future-live. [2025-03-16 22:49:33,606 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 22:49:33,613 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 22:49:33,613 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 22:49:33,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:49:33 BoogieIcfgContainer [2025-03-16 22:49:33,614 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 22:49:33,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 22:49:33,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 22:49:33,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 22:49:33,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 10:49:30" (1/3) ... [2025-03-16 22:49:33,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f7c890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:49:33, skipping insertion in model container [2025-03-16 22:49:33,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:49:31" (2/3) ... [2025-03-16 22:49:33,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f7c890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:49:33, skipping insertion in model container [2025-03-16 22:49:33,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:49:33" (3/3) ... [2025-03-16 22:49:33,621 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p2.c [2025-03-16 22:49:33,632 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 22:49:33,633 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_arrays_vsa16a_p2.c that has 1 procedures, 8 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 22:49:33,668 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 22:49:33,678 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;@12586def, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 22:49:33,679 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 22:49:33,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:33,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-16 22:49:33,686 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:49:33,686 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-16 22:49:33,687 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:49:33,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:49:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1137951, now seen corresponding path program 1 times [2025-03-16 22:49:33,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 22:49:33,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970741377] [2025-03-16 22:49:33,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:49:33,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:49:33,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:49:33,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:49:33,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 22:49:33,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-16 22:49:33,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-16 22:49:33,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:49:33,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:49:33,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-16 22:49:34,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:49:34,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:49:34,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 22:49:34,121 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 22:49:34,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970741377] [2025-03-16 22:49:34,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970741377] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:49:34,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:49:34,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 22:49:34,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82722636] [2025-03-16 22:49:34,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:49:34,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 22:49:34,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 22:49:34,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 22:49:34,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:49:34,139 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:49:34,230 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2025-03-16 22:49:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 22:49:34,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2025-03-16 22:49:34,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:49:34,237 INFO L225 Difference]: With dead ends: 16 [2025-03-16 22:49:34,237 INFO L226 Difference]: Without dead ends: 9 [2025-03-16 22:49:34,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 22:49:34,241 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:49:34,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:49:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2025-03-16 22:49:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2025-03-16 22:49:34,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2025-03-16 22:49:34,265 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2025-03-16 22:49:34,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:49:34,265 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2025-03-16 22:49:34,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:49:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2025-03-16 22:49:34,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-16 22:49:34,266 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:49:34,266 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-16 22:49:34,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 22:49:34,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:49:34,471 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:49:34,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:49:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash -458170295, now seen corresponding path program 1 times [2025-03-16 22:49:34,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 22:49:34,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461161954] [2025-03-16 22:49:34,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:49:34,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:49:34,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:49:34,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:49:34,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 22:49:34,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 22:49:34,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 22:49:34,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:49:34,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:49:34,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-16 22:49:34,894 INFO L279 TraceCheckSpWp]: Computing forward predicates...