./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Rrobin.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Rrobin.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 53e6dbff486f18c9e67859c6aafc8c76e31b5ebe4bc4a2fff6ca8706de37c876 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 08:46:59,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 08:46:59,889 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 08:46:59,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 08:46:59,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 08:46:59,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 08:46:59,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 08:46:59,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 08:46:59,912 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 08:46:59,913 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 08:46:59,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 08:46:59,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 08:46:59,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 08:46:59,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 08:46:59,913 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 08:46:59,913 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 08:46:59,913 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 08:46:59,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 08:46:59,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 08:46:59,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 08:46:59,914 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 08:46:59,914 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 08:46:59,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 08:46:59,914 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 08:46:59,914 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 08:46:59,914 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 08:46:59,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 08:46:59,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 08:46:59,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 08:46:59,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 08:46:59,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 08:46:59,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 08:46:59,915 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 08:46:59,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 08:46:59,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 08:46:59,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 08:46:59,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 08:46:59,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 08:46:59,915 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 08:46:59,915 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 08:46:59,916 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 -> 53e6dbff486f18c9e67859c6aafc8c76e31b5ebe4bc4a2fff6ca8706de37c876 [2025-03-08 08:47:00,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 08:47:00,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 08:47:00,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 08:47:00,165 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 08:47:00,165 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 08:47:00,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Rrobin.c [2025-03-08 08:47:01,341 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb741e819/7cc220fa950340189f77f962af82527c/FLAG7a69029a4 [2025-03-08 08:47:01,562 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 08:47:01,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Rrobin.c [2025-03-08 08:47:01,589 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb741e819/7cc220fa950340189f77f962af82527c/FLAG7a69029a4 [2025-03-08 08:47:01,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb741e819/7cc220fa950340189f77f962af82527c [2025-03-08 08:47:01,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 08:47:01,902 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 08:47:01,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 08:47:01,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 08:47:01,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 08:47:01,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 08:47:01" (1/1) ... [2025-03-08 08:47:01,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@364ead45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:01, skipping insertion in model container [2025-03-08 08:47:01,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 08:47:01" (1/1) ... [2025-03-08 08:47:01,919 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 08:47:02,026 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.h_Rrobin.c[1248,1261] [2025-03-08 08:47:02,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 08:47:02,106 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 08:47:02,115 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.h_Rrobin.c[1248,1261] [2025-03-08 08:47:02,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 08:47:02,159 INFO L204 MainTranslator]: Completed translation [2025-03-08 08:47:02,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02 WrapperNode [2025-03-08 08:47:02,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 08:47:02,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 08:47:02,161 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 08:47:02,161 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 08:47:02,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,225 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 393 [2025-03-08 08:47:02,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 08:47:02,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 08:47:02,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 08:47:02,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 08:47:02,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,261 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 08:47:02,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,272 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 08:47:02,298 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 08:47:02,298 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 08:47:02,299 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 08:47:02,299 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (1/1) ... [2025-03-08 08:47:02,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 08:47:02,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 08:47:02,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 08:47:02,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 08:47:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 08:47:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 08:47:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 08:47:02,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 08:47:02,424 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 08:47:02,425 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 08:47:02,872 INFO L? ?]: Removed 208 outVars from TransFormulas that were not future-live. [2025-03-08 08:47:02,872 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 08:47:02,901 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 08:47:02,901 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 08:47:02,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 08:47:02 BoogieIcfgContainer [2025-03-08 08:47:02,906 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 08:47:02,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 08:47:02,907 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 08:47:02,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 08:47:02,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 08:47:01" (1/3) ... [2025-03-08 08:47:02,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54357a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 08:47:02, skipping insertion in model container [2025-03-08 08:47:02,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:02" (2/3) ... [2025-03-08 08:47:02,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54357a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 08:47:02, skipping insertion in model container [2025-03-08 08:47:02,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 08:47:02" (3/3) ... [2025-03-08 08:47:02,914 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Rrobin.c [2025-03-08 08:47:02,924 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 08:47:02,926 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.h_Rrobin.c that has 1 procedures, 98 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 08:47:02,967 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 08:47:02,977 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;@4de4ee1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 08:47:02,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 08:47:02,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 96 states have (on average 1.4895833333333333) internal successors, (143), 97 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 08:47:02,986 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:47:02,986 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] [2025-03-08 08:47:02,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:47:02,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:47:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1056669794, now seen corresponding path program 1 times [2025-03-08 08:47:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:47:02,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818494040] [2025-03-08 08:47:02,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:47:02,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:47:03,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 08:47:03,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 08:47:03,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:47:03,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:47:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:47:03,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:47:03,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818494040] [2025-03-08 08:47:03,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818494040] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:47:03,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:47:03,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 08:47:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079132021] [2025-03-08 08:47:03,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:47:03,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 08:47:03,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:47:03,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 08:47:03,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 08:47:03,423 INFO L87 Difference]: Start difference. First operand has 98 states, 96 states have (on average 1.4895833333333333) internal successors, (143), 97 states have internal predecessors, (143), 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 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:03,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:47:03,504 INFO L93 Difference]: Finished difference Result 173 states and 255 transitions. [2025-03-08 08:47:03,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 08:47:03,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2025-03-08 08:47:03,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:47:03,510 INFO L225 Difference]: With dead ends: 173 [2025-03-08 08:47:03,511 INFO L226 Difference]: Without dead ends: 97 [2025-03-08 08:47:03,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 08:47:03,515 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:47:03,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:47:03,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-03-08 08:47:03,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2025-03-08 08:47:03,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.46875) internal successors, (141), 96 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 141 transitions. [2025-03-08 08:47:03,543 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 141 transitions. Word has length 25 [2025-03-08 08:47:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:47:03,544 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 141 transitions. [2025-03-08 08:47:03,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 141 transitions. [2025-03-08 08:47:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-08 08:47:03,545 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:47:03,545 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] [2025-03-08 08:47:03,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 08:47:03,545 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:47:03,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:47:03,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1607653983, now seen corresponding path program 1 times [2025-03-08 08:47:03,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:47:03,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858359587] [2025-03-08 08:47:03,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:47:03,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:47:03,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 08:47:03,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 08:47:03,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:47:03,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:47:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:47:03,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:47:03,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858359587] [2025-03-08 08:47:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858359587] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:47:03,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:47:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 08:47:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305408086] [2025-03-08 08:47:03,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:47:03,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 08:47:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:47:03,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 08:47:03,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 08:47:03,697 INFO L87 Difference]: Start difference. First operand 97 states and 141 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:47:03,769 INFO L93 Difference]: Finished difference Result 174 states and 253 transitions. [2025-03-08 08:47:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 08:47:03,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2025-03-08 08:47:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:47:03,771 INFO L225 Difference]: With dead ends: 174 [2025-03-08 08:47:03,771 INFO L226 Difference]: Without dead ends: 99 [2025-03-08 08:47:03,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 08:47:03,772 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:47:03,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 337 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:47:03,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-03-08 08:47:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2025-03-08 08:47:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 98 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2025-03-08 08:47:03,776 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 26 [2025-03-08 08:47:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:47:03,776 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2025-03-08 08:47:03,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2025-03-08 08:47:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-08 08:47:03,777 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:47:03,777 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] [2025-03-08 08:47:03,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 08:47:03,777 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:47:03,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:47:03,778 INFO L85 PathProgramCache]: Analyzing trace with hash 229175225, now seen corresponding path program 1 times [2025-03-08 08:47:03,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:47:03,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359591499] [2025-03-08 08:47:03,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:47:03,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:47:03,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 08:47:03,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 08:47:03,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:47:03,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:47:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:47:04,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:47:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359591499] [2025-03-08 08:47:04,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359591499] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:47:04,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:47:04,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 08:47:04,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037847108] [2025-03-08 08:47:04,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:47:04,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 08:47:04,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:47:04,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 08:47:04,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 08:47:04,005 INFO L87 Difference]: Start difference. First operand 99 states and 143 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:04,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:47:04,124 INFO L93 Difference]: Finished difference Result 180 states and 260 transitions. [2025-03-08 08:47:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 08:47:04,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2025-03-08 08:47:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:47:04,126 INFO L225 Difference]: With dead ends: 180 [2025-03-08 08:47:04,126 INFO L226 Difference]: Without dead ends: 103 [2025-03-08 08:47:04,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 08:47:04,127 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 128 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:47:04,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 423 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:47:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2025-03-08 08:47:04,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2025-03-08 08:47:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 101 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2025-03-08 08:47:04,132 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 27 [2025-03-08 08:47:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:47:04,132 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2025-03-08 08:47:04,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:04,133 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2025-03-08 08:47:04,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-08 08:47:04,133 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:47:04,133 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] [2025-03-08 08:47:04,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 08:47:04,134 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:47:04,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:47:04,135 INFO L85 PathProgramCache]: Analyzing trace with hash 402859972, now seen corresponding path program 1 times [2025-03-08 08:47:04,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:47:04,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383291267] [2025-03-08 08:47:04,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:47:04,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:47:04,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 08:47:04,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 08:47:04,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:47:04,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:47:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:47:04,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 08:47:04,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383291267] [2025-03-08 08:47:04,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383291267] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:47:04,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:47:04,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 08:47:04,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324263423] [2025-03-08 08:47:04,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:47:04,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 08:47:04,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 08:47:04,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 08:47:04,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 08:47:04,378 INFO L87 Difference]: Start difference. First operand 102 states and 146 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:04,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:47:04,495 INFO L93 Difference]: Finished difference Result 186 states and 266 transitions. [2025-03-08 08:47:04,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 08:47:04,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 28 [2025-03-08 08:47:04,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:47:04,496 INFO L225 Difference]: With dead ends: 186 [2025-03-08 08:47:04,496 INFO L226 Difference]: Without dead ends: 106 [2025-03-08 08:47:04,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 08:47:04,497 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 125 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:47:04,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 532 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:47:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-03-08 08:47:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2025-03-08 08:47:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 101 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2025-03-08 08:47:04,505 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 28 [2025-03-08 08:47:04,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:47:04,506 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2025-03-08 08:47:04,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:04,507 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2025-03-08 08:47:04,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-08 08:47:04,507 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:47:04,507 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] [2025-03-08 08:47:04,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 08:47:04,508 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:47:04,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:47:04,509 INFO L85 PathProgramCache]: Analyzing trace with hash 873660014, now seen corresponding path program 1 times [2025-03-08 08:47:04,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 08:47:04,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872806366] [2025-03-08 08:47:04,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:47:04,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 08:47:04,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 08:47:04,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 08:47:04,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:47:04,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 08:47:04,549 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 08:47:04,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 08:47:04,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 08:47:04,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:47:04,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 08:47:04,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 08:47:04,596 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 08:47:04,596 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 08:47:04,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 08:47:04,600 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-08 08:47:04,617 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-08 08:47:04,622 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 08:47:04,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 08:47:04 BoogieIcfgContainer [2025-03-08 08:47:04,626 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 08:47:04,627 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 08:47:04,627 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 08:47:04,627 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 08:47:04,628 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 08:47:02" (3/4) ... [2025-03-08 08:47:04,629 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-08 08:47:04,630 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 08:47:04,631 INFO L158 Benchmark]: Toolchain (without parser) took 2729.11ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 54.9MB in the end (delta: 52.0MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2025-03-08 08:47:04,631 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 201.3MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 08:47:04,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.35ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 90.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 08:47:04,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.40ms. Allocated memory is still 142.6MB. Free memory was 90.6MB in the beginning and 82.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 08:47:04,632 INFO L158 Benchmark]: Boogie Preprocessor took 70.63ms. Allocated memory is still 142.6MB. Free memory was 82.3MB in the beginning and 77.3MB in the end (delta: 5.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 08:47:04,633 INFO L158 Benchmark]: IcfgBuilder took 607.58ms. Allocated memory is still 142.6MB. Free memory was 77.3MB in the beginning and 91.9MB in the end (delta: -14.6MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. [2025-03-08 08:47:04,633 INFO L158 Benchmark]: TraceAbstraction took 1719.11ms. Allocated memory is still 142.6MB. Free memory was 91.9MB in the beginning and 55.0MB in the end (delta: 36.9MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. [2025-03-08 08:47:04,633 INFO L158 Benchmark]: Witness Printer took 3.30ms. Allocated memory is still 142.6MB. Free memory was 55.0MB in the beginning and 54.9MB in the end (delta: 24.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 08:47:04,634 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 201.3MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.35ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 90.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.40ms. Allocated memory is still 142.6MB. Free memory was 90.6MB in the beginning and 82.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.63ms. Allocated memory is still 142.6MB. Free memory was 82.3MB in the beginning and 77.3MB in the end (delta: 5.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 607.58ms. Allocated memory is still 142.6MB. Free memory was 77.3MB in the beginning and 91.9MB in the end (delta: -14.6MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1719.11ms. Allocated memory is still 142.6MB. Free memory was 91.9MB in the beginning and 55.0MB in the end (delta: 36.9MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. * Witness Printer took 3.30ms. Allocated memory is still 142.6MB. Free memory was 55.0MB in the beginning and 54.9MB in the end (delta: 24.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 90. 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_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 32); [L30] const SORT_8 msb_SORT_8 = (SORT_8)1 << (32 - 1); [L32] const SORT_1 var_5 = 0; [L33] const SORT_8 var_10 = 0; [L34] const SORT_1 var_19 = 1; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L38] SORT_1 input_4; [L39] SORT_1 input_34; [L40] SORT_1 input_37; [L41] SORT_1 input_41; [L42] SORT_1 input_50; [L43] SORT_1 input_53; [L44] SORT_1 input_57; [L46] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, var_10=0, var_19=1, var_5=0] [L46] SORT_1 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, var_10=0, var_19=1, var_5=0] [L47] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, var_10=0, var_19=1, var_5=0] [L48] SORT_1 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L49] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, state_24=0, var_10=0, var_19=1, var_5=0] [L49] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L50] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, state_24=0, state_25=0, var_10=0, var_19=1, var_5=0] [L50] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L52] SORT_1 init_7_arg_1 = var_5; [L53] state_6 = init_7_arg_1 [L54] SORT_1 init_13_arg_1 = var_5; [L55] state_12 = init_13_arg_1 [L56] SORT_1 init_27_arg_1 = var_5; [L57] state_26 = init_27_arg_1 VAL [mask_SORT_1=1, state_12=0, state_24=0, state_25=0, state_26=0, state_6=0, var_10=0, var_19=1, var_5=0] [L60] input_2 = __VERIFIER_nondet_uchar() [L61] input_3 = __VERIFIER_nondet_uchar() [L62] input_4 = __VERIFIER_nondet_uchar() [L63] input_34 = __VERIFIER_nondet_uchar() [L64] input_37 = __VERIFIER_nondet_uchar() [L65] input_41 = __VERIFIER_nondet_uchar() [L66] input_50 = __VERIFIER_nondet_uchar() [L67] input_53 = __VERIFIER_nondet_uchar() [L68] input_57 = __VERIFIER_nondet_uchar() [L71] SORT_1 var_9_arg_0 = state_6; VAL [mask_SORT_1=1, state_12=0, state_24=0, state_25=0, state_26=0, state_6=0, var_10=0, var_19=1, var_5=0, var_9_arg_0=0] [L72] EXPR var_9_arg_0 & mask_SORT_1 VAL [mask_SORT_1=1, state_12=0, state_24=0, state_25=0, state_26=0, state_6=0, var_10=0, var_19=1, var_5=0] [L72] var_9_arg_0 = var_9_arg_0 & mask_SORT_1 [L73] SORT_8 var_9 = var_9_arg_0; [L74] SORT_8 var_11_arg_0 = var_9; [L75] SORT_8 var_11_arg_1 = var_10; [L76] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L77] SORT_1 var_14_arg_0 = state_12; VAL [mask_SORT_1=1, state_12=0, state_24=0, state_25=0, state_26=0, state_6=0, var_10=0, var_11=1, var_14_arg_0=0, var_19=1, var_5=0] [L78] EXPR var_14_arg_0 & mask_SORT_1 VAL [mask_SORT_1=1, state_12=0, state_24=0, state_25=0, state_26=0, state_6=0, var_10=0, var_11=1, var_19=1, var_5=0] [L78] var_14_arg_0 = var_14_arg_0 & mask_SORT_1 [L79] SORT_8 var_14 = var_14_arg_0; [L80] SORT_8 var_15_arg_0 = var_14; [L81] SORT_8 var_15_arg_1 = var_10; [L82] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L83] SORT_1 var_16_arg_0 = var_11; [L84] SORT_1 var_16_arg_1 = var_15; VAL [mask_SORT_1=1, state_12=0, state_24=0, state_25=0, state_26=0, state_6=0, var_10=0, var_16_arg_0=1, var_16_arg_1=1, var_19=1, var_5=0] [L85] EXPR var_16_arg_0 | var_16_arg_1 VAL [mask_SORT_1=1, state_12=0, state_24=0, state_25=0, state_26=0, state_6=0, var_10=0, var_19=1, var_5=0] [L85] SORT_1 var_16 = var_16_arg_0 | var_16_arg_1; [L86] SORT_1 var_20_arg_0 = var_16; [L87] SORT_1 var_20 = ~var_20_arg_0; [L88] SORT_1 var_21_arg_0 = var_19; [L89] SORT_1 var_21_arg_1 = var_20; VAL [mask_SORT_1=1, state_12=0, state_24=0, state_25=0, state_26=0, state_6=0, var_10=0, var_19=1, var_21_arg_0=1, var_21_arg_1=-2, var_5=0] [L90] EXPR var_21_arg_0 & var_21_arg_1 VAL [mask_SORT_1=1, state_12=0, state_24=0, state_25=0, state_26=0, state_6=0, var_10=0, var_19=1, var_5=0] [L90] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L91] EXPR var_21 & mask_SORT_1 VAL [mask_SORT_1=1, state_12=0, state_24=0, state_25=0, state_26=0, state_6=0, var_10=0, var_19=1, var_5=0] [L91] var_21 = var_21 & mask_SORT_1 [L92] SORT_1 bad_22_arg_0 = var_21; [L93] CALL __VERIFIER_assert(!(bad_22_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 98 locations, 143 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 253 mSDsluCounter, 1632 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1184 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 452 IncrementalHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 448 mSDtfsCounter, 452 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-08 08:47:04,650 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.h_Rrobin.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 53e6dbff486f18c9e67859c6aafc8c76e31b5ebe4bc4a2fff6ca8706de37c876 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 08:47:06,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 08:47:06,581 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-03-08 08:47:06,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 08:47:06,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 08:47:06,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 08:47:06,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 08:47:06,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 08:47:06,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 08:47:06,610 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 08:47:06,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 08:47:06,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 08:47:06,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 08:47:06,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 08:47:06,612 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 08:47:06,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 08:47:06,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 08:47:06,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 08:47:06,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 08:47:06,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 08:47:06,613 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 08:47:06,613 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 08:47:06,613 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-08 08:47:06,613 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-08 08:47:06,613 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 08:47:06,613 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 08:47:06,613 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 08:47:06,613 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 08:47:06,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 08:47:06,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 08:47:06,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 08:47:06,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 08:47:06,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 08:47:06,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 08:47:06,614 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 08:47:06,614 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 08:47:06,614 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-08 08:47:06,615 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-08 08:47:06,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 08:47:06,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 08:47:06,615 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 08:47:06,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 08:47:06,615 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 -> 53e6dbff486f18c9e67859c6aafc8c76e31b5ebe4bc4a2fff6ca8706de37c876 [2025-03-08 08:47:06,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 08:47:06,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 08:47:06,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 08:47:06,875 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 08:47:06,875 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 08:47:06,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Rrobin.c [2025-03-08 08:47:08,111 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45f90c94/7e93716387304f6b84ec6b7a392d9913/FLAG25967d8d2 [2025-03-08 08:47:08,263 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 08:47:08,263 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Rrobin.c [2025-03-08 08:47:08,273 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45f90c94/7e93716387304f6b84ec6b7a392d9913/FLAG25967d8d2 [2025-03-08 08:47:08,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45f90c94/7e93716387304f6b84ec6b7a392d9913 [2025-03-08 08:47:08,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 08:47:08,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 08:47:08,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 08:47:08,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 08:47:08,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 08:47:08,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508fff4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08, skipping insertion in model container [2025-03-08 08:47:08,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,676 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 08:47:08,776 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.h_Rrobin.c[1248,1261] [2025-03-08 08:47:08,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 08:47:08,834 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 08:47:08,842 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.h_Rrobin.c[1248,1261] [2025-03-08 08:47:08,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 08:47:08,880 INFO L204 MainTranslator]: Completed translation [2025-03-08 08:47:08,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08 WrapperNode [2025-03-08 08:47:08,881 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 08:47:08,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 08:47:08,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 08:47:08,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 08:47:08,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,894 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,919 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 217 [2025-03-08 08:47:08,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 08:47:08,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 08:47:08,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 08:47:08,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 08:47:08,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,933 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,945 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 08:47:08,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,956 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 08:47:08,968 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 08:47:08,969 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 08:47:08,969 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 08:47:08,969 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (1/1) ... [2025-03-08 08:47:08,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 08:47:08,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 08:47:09,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 08:47:09,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 08:47:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 08:47:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-08 08:47:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 08:47:09,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 08:47:09,095 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 08:47:09,096 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 08:47:09,305 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2025-03-08 08:47:09,305 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 08:47:09,310 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 08:47:09,311 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 08:47:09,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 08:47:09 BoogieIcfgContainer [2025-03-08 08:47:09,311 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 08:47:09,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 08:47:09,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 08:47:09,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 08:47:09,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 08:47:08" (1/3) ... [2025-03-08 08:47:09,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316ce733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 08:47:09, skipping insertion in model container [2025-03-08 08:47:09,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 08:47:08" (2/3) ... [2025-03-08 08:47:09,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316ce733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 08:47:09, skipping insertion in model container [2025-03-08 08:47:09,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 08:47:09" (3/3) ... [2025-03-08 08:47:09,319 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Rrobin.c [2025-03-08 08:47:09,328 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 08:47:09,330 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.h_Rrobin.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 08:47:09,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 08:47:09,369 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;@507c5208, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 08:47:09,370 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 08:47:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:09,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-08 08:47:09,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:47:09,376 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-08 08:47:09,377 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:47:09,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:47:09,381 INFO L85 PathProgramCache]: Analyzing trace with hash 38140359, now seen corresponding path program 1 times [2025-03-08 08:47:09,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 08:47:09,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445234426] [2025-03-08 08:47:09,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:47:09,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 08:47:09,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 08:47:09,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 08:47:09,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 08:47:09,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-08 08:47:09,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-08 08:47:09,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:47:09,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:47:09,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 08:47:09,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 08:47:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:47:09,647 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 08:47:09,648 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 08:47:09,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445234426] [2025-03-08 08:47:09,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445234426] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 08:47:09,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 08:47:09,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 08:47:09,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628351579] [2025-03-08 08:47:09,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 08:47:09,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 08:47:09,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 08:47:09,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 08:47:09,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 08:47:09,669 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:47:09,709 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2025-03-08 08:47:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 08:47:09,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-08 08:47:09,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:47:09,718 INFO L225 Difference]: With dead ends: 18 [2025-03-08 08:47:09,719 INFO L226 Difference]: Without dead ends: 10 [2025-03-08 08:47:09,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 08:47:09,723 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 08:47:09,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 08:47:09,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-03-08 08:47:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2025-03-08 08:47:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2025-03-08 08:47:09,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2025-03-08 08:47:09,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:47:09,744 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2025-03-08 08:47:09,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2025-03-08 08:47:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-08 08:47:09,745 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:47:09,745 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-08 08:47:09,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 08:47:09,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 08:47:09,946 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:47:09,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:47:09,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1926026653, now seen corresponding path program 1 times [2025-03-08 08:47:09,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 08:47:09,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41261907] [2025-03-08 08:47:09,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 08:47:09,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 08:47:09,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 08:47:09,951 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) [2025-03-08 08:47:09,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 08:47:10,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 08:47:10,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 08:47:10,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 08:47:10,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:47:10,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-08 08:47:10,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 08:47:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:47:10,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 08:47:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 08:47:13,461 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 08:47:13,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41261907] [2025-03-08 08:47:13,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41261907] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 08:47:13,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 08:47:13,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-08 08:47:13,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029130803] [2025-03-08 08:47:13,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 08:47:13,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 08:47:13,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 08:47:13,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 08:47:13,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-08 08:47:13,463 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:47:14,558 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2025-03-08 08:47:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 08:47:14,559 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-08 08:47:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:47:14,559 INFO L225 Difference]: With dead ends: 21 [2025-03-08 08:47:14,559 INFO L226 Difference]: Without dead ends: 19 [2025-03-08 08:47:14,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2025-03-08 08:47:14,560 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 08:47:14,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 08:47:14,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-03-08 08:47:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2025-03-08 08:47:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2025-03-08 08:47:14,565 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2025-03-08 08:47:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:47:14,566 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2025-03-08 08:47:14,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2025-03-08 08:47:14,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 08:47:14,566 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 08:47:14,566 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2025-03-08 08:47:14,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 08:47:14,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 08:47:14,767 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 08:47:14,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 08:47:14,768 INFO L85 PathProgramCache]: Analyzing trace with hash -209850681, now seen corresponding path program 2 times [2025-03-08 08:47:14,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 08:47:14,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767790704] [2025-03-08 08:47:14,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 08:47:14,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 08:47:14,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 08:47:14,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 08:47:14,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 08:47:14,859 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-08 08:47:14,884 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 08:47:14,884 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 08:47:14,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 08:47:14,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-08 08:47:14,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 08:47:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-08 08:47:15,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 08:47:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-08 08:47:19,103 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 08:47:19,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767790704] [2025-03-08 08:47:19,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767790704] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 08:47:19,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 08:47:19,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-08 08:47:19,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609517917] [2025-03-08 08:47:19,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 08:47:19,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 08:47:19,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 08:47:19,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 08:47:19,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-08 08:47:19,104 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:19,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 08:47:19,166 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2025-03-08 08:47:19,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 08:47:19,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-03-08 08:47:19,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 08:47:19,167 INFO L225 Difference]: With dead ends: 18 [2025-03-08 08:47:19,167 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 08:47:19,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-03-08 08:47:19,167 INFO L435 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 08:47:19,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 08:47:19,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 08:47:19,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 08:47:19,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 08:47:19,168 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2025-03-08 08:47:19,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 08:47:19,168 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 08:47:19,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 08:47:19,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 08:47:19,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 08:47:19,170 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 08:47:19,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 08:47:19,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 08:47:19,373 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1] [2025-03-08 08:47:19,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-08 08:47:19,896 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 08:47:19,902 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression [2025-03-08 08:47:19,903 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression [2025-03-08 08:47:19,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 08:47:19 BoogieIcfgContainer [2025-03-08 08:47:19,906 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 08:47:19,908 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 08:47:19,908 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 08:47:19,908 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 08:47:19,909 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 08:47:09" (3/4) ... [2025-03-08 08:47:19,910 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 08:47:19,918 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-08 08:47:19,919 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-08 08:47:19,919 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 08:47:19,919 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 08:47:19,987 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 08:47:19,987 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 08:47:19,987 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 08:47:19,988 INFO L158 Benchmark]: Toolchain (without parser) took 11329.29ms. Allocated memory was 83.9MB in the beginning and 503.3MB in the end (delta: 419.4MB). Free memory was 59.6MB in the beginning and 238.6MB in the end (delta: -179.0MB). Peak memory consumption was 235.7MB. Max. memory is 16.1GB. [2025-03-08 08:47:19,989 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory was 62.0MB in the beginning and 62.0MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 08:47:19,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.09ms. Allocated memory is still 83.9MB. Free memory was 59.6MB in the beginning and 44.7MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 08:47:19,989 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.51ms. Allocated memory is still 83.9MB. Free memory was 44.7MB in the beginning and 42.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 08:47:19,990 INFO L158 Benchmark]: Boogie Preprocessor took 47.97ms. Allocated memory is still 83.9MB. Free memory was 42.5MB in the beginning and 40.0MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 08:47:19,990 INFO L158 Benchmark]: IcfgBuilder took 342.51ms. Allocated memory is still 83.9MB. Free memory was 40.0MB in the beginning and 54.5MB in the end (delta: -14.5MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2025-03-08 08:47:19,990 INFO L158 Benchmark]: TraceAbstraction took 10593.57ms. Allocated memory was 83.9MB in the beginning and 503.3MB in the end (delta: 419.4MB). Free memory was 53.4MB in the beginning and 247.0MB in the end (delta: -193.5MB). Peak memory consumption was 231.8MB. Max. memory is 16.1GB. [2025-03-08 08:47:19,990 INFO L158 Benchmark]: Witness Printer took 79.06ms. Allocated memory is still 503.3MB. Free memory was 247.0MB in the beginning and 238.6MB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 08:47:19,993 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory was 62.0MB in the beginning and 62.0MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.09ms. Allocated memory is still 83.9MB. Free memory was 59.6MB in the beginning and 44.7MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.51ms. Allocated memory is still 83.9MB. Free memory was 44.7MB in the beginning and 42.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.97ms. Allocated memory is still 83.9MB. Free memory was 42.5MB in the beginning and 40.0MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 342.51ms. Allocated memory is still 83.9MB. Free memory was 40.0MB in the beginning and 54.5MB in the end (delta: -14.5MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * TraceAbstraction took 10593.57ms. Allocated memory was 83.9MB in the beginning and 503.3MB in the end (delta: 419.4MB). Free memory was 53.4MB in the beginning and 247.0MB in the end (delta: -193.5MB). Peak memory consumption was 231.8MB. Max. memory is 16.1GB. * Witness Printer took 79.06ms. Allocated memory is still 503.3MB. Free memory was 247.0MB in the beginning and 238.6MB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 11 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.0s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 10 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 19 QuantifiedInterpolants, 21115 SizeOfPredicates, 25 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 33/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 58]: Location Invariant Derived location invariant: (((1 == mask_SORT_1) && (0 == var_5)) && (0 == var_10)) RESULT: Ultimate proved your program to be correct! [2025-03-08 08:47:20,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE