./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.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 cb35da9c160c8cc3a4e8eb0847ad52031566203029d285a75392d741632a8daa --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 22:14:20,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 22:14:20,584 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-16 22:14:20,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 22:14:20,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 22:14:20,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 22:14:20,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 22:14:20,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 22:14:20,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 22:14:20,613 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 22:14:20,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 22:14:20,613 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 22:14:20,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 22:14:20,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 22:14:20,613 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 22:14:20,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 22:14:20,614 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 22:14:20,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 22:14:20,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:14:20,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 22:14:20,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 22:14:20,615 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 22:14:20,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 22:14:20,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 22:14:20,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 22:14:20,616 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 22:14:20,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 22:14:20,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 22:14:20,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 22:14:20,616 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 -> cb35da9c160c8cc3a4e8eb0847ad52031566203029d285a75392d741632a8daa [2025-03-16 22:14:20,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 22:14:20,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 22:14:20,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 22:14:20,843 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 22:14:20,843 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 22:14:20,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c [2025-03-16 22:14:21,958 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae297954/970454e43c6e497681817e1c1941e366/FLAG15a86a944 [2025-03-16 22:14:22,151 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 22:14:22,152 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c [2025-03-16 22:14:22,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae297954/970454e43c6e497681817e1c1941e366/FLAG15a86a944 [2025-03-16 22:14:22,505 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae297954/970454e43c6e497681817e1c1941e366 [2025-03-16 22:14:22,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 22:14:22,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 22:14:22,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 22:14:22,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 22:14:22,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 22:14:22,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7aad5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22, skipping insertion in model container [2025-03-16 22:14:22,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 22:14:22,612 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.noninitstate.c[1262,1275] [2025-03-16 22:14:22,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:14:22,652 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 22:14:22,662 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.noninitstate.c[1262,1275] [2025-03-16 22:14:22,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:14:22,690 INFO L204 MainTranslator]: Completed translation [2025-03-16 22:14:22,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22 WrapperNode [2025-03-16 22:14:22,692 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 22:14:22,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 22:14:22,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 22:14:22,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 22:14:22,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,745 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2025-03-16 22:14:22,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 22:14:22,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 22:14:22,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 22:14:22,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 22:14:22,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,754 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,770 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 22:14:22,771 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,771 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,779 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,788 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 22:14:22,789 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 22:14:22,789 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 22:14:22,789 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 22:14:22,791 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (1/1) ... [2025-03-16 22:14:22,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:14:22,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:14:22,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 22:14:22,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 22:14:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 22:14:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 22:14:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 22:14:22,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 22:14:22,883 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 22:14:22,884 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 22:14:23,153 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2025-03-16 22:14:23,153 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 22:14:23,175 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 22:14:23,175 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 22:14:23,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:14:23 BoogieIcfgContainer [2025-03-16 22:14:23,176 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 22:14:23,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 22:14:23,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 22:14:23,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 22:14:23,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 10:14:22" (1/3) ... [2025-03-16 22:14:23,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165fa6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:14:23, skipping insertion in model container [2025-03-16 22:14:23,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:22" (2/3) ... [2025-03-16 22:14:23,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165fa6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:14:23, skipping insertion in model container [2025-03-16 22:14:23,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:14:23" (3/3) ... [2025-03-16 22:14:23,183 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.noninitstate.c [2025-03-16 22:14:23,192 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 22:14:23,194 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.noninitstate.c that has 1 procedures, 50 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 22:14:23,227 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 22:14:23,234 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;@6b91b4c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 22:14:23,234 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 22:14:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.5) internal successors, (72), 49 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-16 22:14:23,241 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:14:23,241 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:14:23,242 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:14:23,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:14:23,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1424923754, now seen corresponding path program 1 times [2025-03-16 22:14:23,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:14:23,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656629169] [2025-03-16 22:14:23,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:14:23,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:14:23,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-16 22:14:23,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-16 22:14:23,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:14:23,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:14:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:14:23,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:14:23,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656629169] [2025-03-16 22:14:23,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656629169] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:14:23,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:14:23,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 22:14:23,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444052381] [2025-03-16 22:14:23,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:14:23,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 22:14:23,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:14:23,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 22:14:23,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 22:14:23,414 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.5) internal successors, (72), 49 states have internal predecessors, (72), 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 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:23,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:14:23,447 INFO L93 Difference]: Finished difference Result 85 states and 124 transitions. [2025-03-16 22:14:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 22:14:23,449 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2025-03-16 22:14:23,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:14:23,453 INFO L225 Difference]: With dead ends: 85 [2025-03-16 22:14:23,454 INFO L226 Difference]: Without dead ends: 48 [2025-03-16 22:14:23,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 22:14:23,459 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 22:14:23,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 22:14:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-03-16 22:14:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-03-16 22:14:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2025-03-16 22:14:23,483 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 16 [2025-03-16 22:14:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:14:23,483 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2025-03-16 22:14:23,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2025-03-16 22:14:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-16 22:14:23,484 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:14:23,484 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:14:23,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 22:14:23,485 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:14:23,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:14:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1424953545, now seen corresponding path program 1 times [2025-03-16 22:14:23,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:14:23,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977696147] [2025-03-16 22:14:23,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:14:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:14:23,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-16 22:14:23,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-16 22:14:23,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:14:23,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:14:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:14:23,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:14:23,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977696147] [2025-03-16 22:14:23,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977696147] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:14:23,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:14:23,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 22:14:23,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427588381] [2025-03-16 22:14:23,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:14:23,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 22:14:23,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:14:23,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 22:14:23,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:14:23,796 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:23,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:14:23,895 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2025-03-16 22:14:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 22:14:23,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2025-03-16 22:14:23,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:14:23,896 INFO L225 Difference]: With dead ends: 83 [2025-03-16 22:14:23,896 INFO L226 Difference]: Without dead ends: 48 [2025-03-16 22:14:23,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:14:23,897 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 58 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:14:23,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 32 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:14:23,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-03-16 22:14:23,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-03-16 22:14:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 66 transitions. [2025-03-16 22:14:23,901 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 66 transitions. Word has length 16 [2025-03-16 22:14:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:14:23,902 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 66 transitions. [2025-03-16 22:14:23,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 66 transitions. [2025-03-16 22:14:23,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-16 22:14:23,902 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:14:23,902 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:14:23,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 22:14:23,902 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:14:23,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:14:23,903 INFO L85 PathProgramCache]: Analyzing trace with hash 872292316, now seen corresponding path program 1 times [2025-03-16 22:14:23,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:14:23,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765183751] [2025-03-16 22:14:23,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:14:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:14:23,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-16 22:14:23,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-16 22:14:23,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:14:23,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 22:14:23,926 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-16 22:14:23,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-16 22:14:23,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-16 22:14:23,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:14:23,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 22:14:23,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-16 22:14:23,960 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-16 22:14:23,961 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 22:14:23,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 22:14:23,965 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-16 22:14:23,979 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-16 22:14:23,983 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 22:14:23,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 10:14:23 BoogieIcfgContainer [2025-03-16 22:14:23,985 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 22:14:23,985 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 22:14:23,985 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 22:14:23,985 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 22:14:23,986 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:14:23" (3/4) ... [2025-03-16 22:14:23,987 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-16 22:14:23,988 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 22:14:23,988 INFO L158 Benchmark]: Toolchain (without parser) took 1481.10ms. Allocated memory is still 167.8MB. Free memory was 133.5MB in the beginning and 101.7MB in the end (delta: 31.8MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2025-03-16 22:14:23,988 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:14:23,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.91ms. Allocated memory is still 167.8MB. Free memory was 133.2MB in the beginning and 121.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 22:14:23,989 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.23ms. Allocated memory is still 167.8MB. Free memory was 121.3MB in the beginning and 117.1MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 22:14:23,989 INFO L158 Benchmark]: Boogie Preprocessor took 42.35ms. Allocated memory is still 167.8MB. Free memory was 117.1MB in the beginning and 114.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:14:23,989 INFO L158 Benchmark]: IcfgBuilder took 386.80ms. Allocated memory is still 167.8MB. Free memory was 114.8MB in the beginning and 87.9MB in the end (delta: 26.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-16 22:14:23,989 INFO L158 Benchmark]: TraceAbstraction took 807.21ms. Allocated memory is still 167.8MB. Free memory was 87.1MB in the beginning and 102.6MB in the end (delta: -15.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:14:23,990 INFO L158 Benchmark]: Witness Printer took 2.57ms. Allocated memory is still 167.8MB. Free memory was 102.6MB in the beginning and 101.7MB in the end (delta: 891.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:14:23,991 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.91ms. Allocated memory is still 167.8MB. Free memory was 133.2MB in the beginning and 121.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.23ms. Allocated memory is still 167.8MB. Free memory was 121.3MB in the beginning and 117.1MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.35ms. Allocated memory is still 167.8MB. Free memory was 117.1MB in the beginning and 114.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 386.80ms. Allocated memory is still 167.8MB. Free memory was 114.8MB in the beginning and 87.9MB in the end (delta: 26.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 807.21ms. Allocated memory is still 167.8MB. Free memory was 87.1MB in the beginning and 102.6MB in the end (delta: -15.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.57ms. Allocated memory is still 167.8MB. Free memory was 102.6MB in the beginning and 101.7MB in the end (delta: 891.7kB). 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: 22]: 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 51. Possible FailurePath: [L27] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L28] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L30] const SORT_1 var_10 = 1; [L31] const SORT_1 var_13 = 0; [L33] SORT_1 input_2; [L35] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, var_10=1, var_13=0] [L35] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L36] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, state_3=0, var_10=1, var_13=0] [L36] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L37] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, state_3=0, state_4=0, var_10=1, var_13=0] [L37] SORT_1 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L39] SORT_1 init_12_arg_1 = var_10; [L40] state_11 = init_12_arg_1 VAL [mask_SORT_1=1, state_11=1, state_3=0, state_4=0, var_13=0] [L43] input_2 = __VERIFIER_nondet_uchar() [L44] EXPR input_2 & mask_SORT_1 VAL [mask_SORT_1=1, state_11=1, state_3=0, state_4=0, var_13=0] [L44] input_2 = input_2 & mask_SORT_1 [L46] SORT_1 var_9_arg_0 = state_3; [L47] SORT_1 var_9_arg_1 = state_4; [L48] SORT_1 var_9 = var_9_arg_0 == var_9_arg_1; [L49] SORT_1 var_15_arg_0 = state_11; [L50] SORT_1 var_15_arg_1 = ~var_9; VAL [input_2=0, mask_SORT_1=1, state_3=0, state_4=0, var_13=0, var_15_arg_0=1, var_15_arg_1=-2, var_9=1] [L51] EXPR var_15_arg_1 & mask_SORT_1 VAL [input_2=0, mask_SORT_1=1, state_3=0, state_4=0, var_13=0, var_15_arg_0=1, var_9=1] [L51] var_15_arg_1 = var_15_arg_1 & mask_SORT_1 [L52] SORT_1 var_15 = !var_15_arg_0 || var_15_arg_1; [L53] SORT_1 constr_16_arg_0 = var_15; [L54] CALL assume_abort_if_not(constr_16_arg_0) [L23] COND FALSE !(!cond) [L54] RET assume_abort_if_not(constr_16_arg_0) [L56] SORT_1 bad_17_arg_0 = var_9; [L57] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L22] COND TRUE !(cond) [L22] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 72 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 76 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 67 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-16 22:14:24,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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.noninitstate.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 cb35da9c160c8cc3a4e8eb0847ad52031566203029d285a75392d741632a8daa --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 22:14:25,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 22:14:25,806 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-03-16 22:14:25,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 22:14:25,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 22:14:25,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 22:14:25,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 22:14:25,832 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 22:14:25,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 22:14:25,832 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 22:14:25,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 22:14:25,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 22:14:25,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 22:14:25,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 22:14:25,834 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 22:14:25,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 22:14:25,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 22:14:25,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 22:14:25,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 22:14:25,835 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:14:25,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 22:14:25,835 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 22:14:25,836 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 22:14:25,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 22:14:25,836 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 -> cb35da9c160c8cc3a4e8eb0847ad52031566203029d285a75392d741632a8daa [2025-03-16 22:14:26,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 22:14:26,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 22:14:26,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 22:14:26,073 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 22:14:26,074 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 22:14:26,075 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c [2025-03-16 22:14:27,210 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3af1b040a/844bc555fb4f4dd497b41785fc518e93/FLAG70146e61d [2025-03-16 22:14:27,390 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 22:14:27,391 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c [2025-03-16 22:14:27,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3af1b040a/844bc555fb4f4dd497b41785fc518e93/FLAG70146e61d [2025-03-16 22:14:27,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3af1b040a/844bc555fb4f4dd497b41785fc518e93 [2025-03-16 22:14:27,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 22:14:27,797 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 22:14:27,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 22:14:27,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 22:14:27,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 22:14:27,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:27,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2c9302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27, skipping insertion in model container [2025-03-16 22:14:27,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:27,814 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 22:14:27,901 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.noninitstate.c[1262,1275] [2025-03-16 22:14:27,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:14:27,929 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 22:14:27,935 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.noninitstate.c[1262,1275] [2025-03-16 22:14:27,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:14:27,951 INFO L204 MainTranslator]: Completed translation [2025-03-16 22:14:27,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27 WrapperNode [2025-03-16 22:14:27,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 22:14:27,952 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 22:14:27,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 22:14:27,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 22:14:27,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:27,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:27,976 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2025-03-16 22:14:27,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 22:14:27,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 22:14:27,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 22:14:27,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 22:14:27,983 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:27,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:27,989 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:27,999 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 22:14:27,999 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:27,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:28,006 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:28,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:28,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:28,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:28,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 22:14:28,014 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 22:14:28,014 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 22:14:28,014 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 22:14:28,015 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (1/1) ... [2025-03-16 22:14:28,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:14:28,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:14:28,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 22:14:28,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 22:14:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 22:14:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-16 22:14:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 22:14:28,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 22:14:28,108 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 22:14:28,109 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 22:14:28,218 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-03-16 22:14:28,218 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 22:14:28,225 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 22:14:28,225 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 22:14:28,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:14:28 BoogieIcfgContainer [2025-03-16 22:14:28,226 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 22:14:28,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 22:14:28,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 22:14:28,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 22:14:28,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 10:14:27" (1/3) ... [2025-03-16 22:14:28,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143fb16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:14:28, skipping insertion in model container [2025-03-16 22:14:28,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:14:27" (2/3) ... [2025-03-16 22:14:28,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143fb16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:14:28, skipping insertion in model container [2025-03-16 22:14:28,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:14:28" (3/3) ... [2025-03-16 22:14:28,234 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.noninitstate.c [2025-03-16 22:14:28,245 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 22:14:28,247 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.noninitstate.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 22:14:28,280 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 22:14:28,287 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;@2860ee60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 22:14:28,288 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 22:14:28,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:28,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-16 22:14:28,294 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:14:28,294 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-16 22:14:28,295 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:14:28,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:14:28,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1182321310, now seen corresponding path program 1 times [2025-03-16 22:14:28,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 22:14:28,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15636571] [2025-03-16 22:14:28,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:14:28,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:14:28,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:14:28,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:14:28,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 22:14:28,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-16 22:14:28,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-16 22:14:28,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:14:28,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:14:28,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 22:14:28,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:14:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:14:28,387 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 22:14:28,387 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 22:14:28,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15636571] [2025-03-16 22:14:28,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15636571] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:14:28,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:14:28,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 22:14:28,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625381995] [2025-03-16 22:14:28,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:14:28,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 22:14:28,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 22:14:28,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 22:14:28,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 22:14:28,405 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:28,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:14:28,411 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2025-03-16 22:14:28,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 22:14:28,413 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2025-03-16 22:14:28,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:14:28,417 INFO L225 Difference]: With dead ends: 17 [2025-03-16 22:14:28,417 INFO L226 Difference]: Without dead ends: 8 [2025-03-16 22:14:28,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 22:14:28,424 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 22:14:28,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 22:14:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2025-03-16 22:14:28,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2025-03-16 22:14:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2025-03-16 22:14:28,445 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2025-03-16 22:14:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:14:28,446 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2025-03-16 22:14:28,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:28,446 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2025-03-16 22:14:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-16 22:14:28,446 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:14:28,446 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-16 22:14:28,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 22:14:28,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:14:28,647 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:14:28,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:14:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1182351101, now seen corresponding path program 1 times [2025-03-16 22:14:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 22:14:28,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92940284] [2025-03-16 22:14:28,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:14:28,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:14:28,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:14:28,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:14:28,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 22:14:28,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-16 22:14:28,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-16 22:14:28,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:14:28,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:14:28,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-16 22:14:28,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:14:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:14:28,908 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 22:14:28,908 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 22:14:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92940284] [2025-03-16 22:14:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92940284] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:14:28,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:14:28,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 22:14:28,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782342142] [2025-03-16 22:14:28,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:14:28,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 22:14:28,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 22:14:28,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 22:14:28,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 22:14:28,910 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:28,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:14:28,938 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2025-03-16 22:14:28,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 22:14:28,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2025-03-16 22:14:28,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:14:28,939 INFO L225 Difference]: With dead ends: 14 [2025-03-16 22:14:28,939 INFO L226 Difference]: Without dead ends: 12 [2025-03-16 22:14:28,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 22:14:28,940 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 22:14:28,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 22:14:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-03-16 22:14:28,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-03-16 22:14:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:28,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2025-03-16 22:14:28,943 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2025-03-16 22:14:28,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:14:28,943 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2025-03-16 22:14:28,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:14:28,943 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2025-03-16 22:14:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-16 22:14:28,943 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:14:28,944 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-03-16 22:14:28,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 22:14:29,145 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 [2025-03-16 22:14:29,145 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:14:29,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:14:29,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1957253460, now seen corresponding path program 1 times [2025-03-16 22:14:29,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 22:14:29,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208184338] [2025-03-16 22:14:29,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:14:29,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:14:29,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:14:29,148 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) [2025-03-16 22:14:29,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 22:14:29,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-16 22:14:29,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-16 22:14:29,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:14:29,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 22:14:29,201 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-16 22:14:29,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-16 22:14:29,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-16 22:14:29,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:14:29,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 22:14:29,234 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-16 22:14:29,235 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-16 22:14:29,235 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 22:14:29,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 22:14:29,437 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 [2025-03-16 22:14:29,440 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-16 22:14:29,451 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-16 22:14:29,451 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-16 22:14:29,453 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 22:14:29,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 10:14:29 BoogieIcfgContainer [2025-03-16 22:14:29,455 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 22:14:29,456 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 22:14:29,456 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 22:14:29,456 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 22:14:29,456 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:14:28" (3/4) ... [2025-03-16 22:14:29,456 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-16 22:14:29,460 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-16 22:14:29,460 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-16 22:14:29,489 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 12. [2025-03-16 22:14:29,523 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-16 22:14:29,524 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-16 22:14:29,524 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 22:14:29,524 INFO L158 Benchmark]: Toolchain (without parser) took 1727.67ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 59.2MB in the end (delta: 33.9MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2025-03-16 22:14:29,525 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:14:29,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.07ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 80.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 22:14:29,527 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.37ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:14:29,527 INFO L158 Benchmark]: Boogie Preprocessor took 34.77ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 78.3MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 22:14:29,527 INFO L158 Benchmark]: IcfgBuilder took 211.95ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 65.2MB in the end (delta: 13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 22:14:29,527 INFO L158 Benchmark]: TraceAbstraction took 1227.55ms. Allocated memory is still 117.4MB. Free memory was 64.8MB in the beginning and 65.2MB in the end (delta: -453.3kB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2025-03-16 22:14:29,528 INFO L158 Benchmark]: Witness Printer took 68.14ms. Allocated memory is still 117.4MB. Free memory was 65.2MB in the beginning and 59.2MB in the end (delta: 6.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:14:29,529 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.07ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 80.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.37ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.77ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 78.3MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 211.95ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 65.2MB in the end (delta: 13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1227.55ms. Allocated memory is still 117.4MB. Free memory was 64.8MB in the beginning and 65.2MB in the end (delta: -453.3kB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Witness Printer took 68.14ms. Allocated memory is still 117.4MB. Free memory was 65.2MB in the beginning and 59.2MB in the end (delta: 6.0MB). 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 - CounterExampleResult [Line: 22]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L27] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L28] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L30] const SORT_1 var_10 = 1; [L31] const SORT_1 var_13 = 0; [L33] SORT_1 input_2; [L35] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L36] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L37] SORT_1 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L39] SORT_1 init_12_arg_1 = var_10; [L40] state_11 = init_12_arg_1 VAL [mask_SORT_1=1, state_11=1, state_3=0, state_4=1, var_13=0] [L43] input_2 = __VERIFIER_nondet_uchar() [L44] input_2 = input_2 & mask_SORT_1 [L46] SORT_1 var_9_arg_0 = state_3; [L47] SORT_1 var_9_arg_1 = state_4; [L48] SORT_1 var_9 = var_9_arg_0 == var_9_arg_1; [L49] SORT_1 var_15_arg_0 = state_11; [L50] SORT_1 var_15_arg_1 = ~var_9; [L51] var_15_arg_1 = var_15_arg_1 & mask_SORT_1 [L52] SORT_1 var_15 = !var_15_arg_0 || var_15_arg_1; [L53] SORT_1 constr_16_arg_0 = var_15; [L54] CALL assume_abort_if_not(constr_16_arg_0) [L23] COND FALSE !(!cond) [L54] RET assume_abort_if_not(constr_16_arg_0) [L56] SORT_1 bad_17_arg_0 = var_9; [L57] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L22] COND FALSE !(!(cond)) [L57] RET __VERIFIER_assert(!(bad_17_arg_0)) [L59] SORT_1 var_5_arg_0 = ~input_2; [L60] var_5_arg_0 = var_5_arg_0 & mask_SORT_1 [L61] SORT_1 var_5_arg_1 = ~state_3; [L62] var_5_arg_1 = var_5_arg_1 & mask_SORT_1 [L63] SORT_1 var_5_arg_2 = state_3; [L64] SORT_1 var_5 = var_5_arg_0 ? var_5_arg_1 : var_5_arg_2; [L65] var_5 = var_5 & mask_SORT_1 [L66] SORT_1 next_7_arg_1 = var_5; [L67] SORT_1 var_6_arg_0 = input_2; [L68] SORT_1 var_6_arg_1 = ~state_4; [L69] var_6_arg_1 = var_6_arg_1 & mask_SORT_1 [L70] SORT_1 var_6_arg_2 = state_4; [L71] SORT_1 var_6 = var_6_arg_0 ? var_6_arg_1 : var_6_arg_2; [L72] var_6 = var_6 & mask_SORT_1 [L73] SORT_1 next_8_arg_1 = var_6; [L74] SORT_1 next_14_arg_1 = var_13; [L76] state_3 = next_7_arg_1 [L77] state_4 = next_8_arg_1 [L78] state_11 = next_14_arg_1 [L43] input_2 = __VERIFIER_nondet_uchar() [L44] input_2 = input_2 & mask_SORT_1 [L46] SORT_1 var_9_arg_0 = state_3; [L47] SORT_1 var_9_arg_1 = state_4; [L48] SORT_1 var_9 = var_9_arg_0 == var_9_arg_1; [L49] SORT_1 var_15_arg_0 = state_11; [L50] SORT_1 var_15_arg_1 = ~var_9; [L51] var_15_arg_1 = var_15_arg_1 & mask_SORT_1 [L52] SORT_1 var_15 = !var_15_arg_0 || var_15_arg_1; [L53] SORT_1 constr_16_arg_0 = var_15; [L54] CALL assume_abort_if_not(constr_16_arg_0) [L23] COND FALSE !(!cond) [L54] RET assume_abort_if_not(constr_16_arg_0) [L56] SORT_1 bad_17_arg_0 = var_9; [L57] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L22] COND TRUE !(cond) [L22] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 12 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 12 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, InterpolantAutomatonStates: 8, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 57 SizeOfPredicates, 1 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be incorrect! [2025-03-16 22:14:29,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE