./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/digits_while.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/digits_while.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 18:31:40,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 18:31:40,611 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 18:31:40,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 18:31:40,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 18:31:40,644 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 18:31:40,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 18:31:40,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 18:31:40,647 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 18:31:40,647 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 18:31:40,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 18:31:40,647 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 18:31:40,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 18:31:40,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 18:31:40,648 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 18:31:40,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 18:31:40,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 18:31:40,649 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 18:31:40,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 18:31:40,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 18:31:40,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 18:31:40,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 18:31:40,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 18:31:40,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 18:31:40,650 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 18:31:40,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 18:31:40,650 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 18:31:40,650 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 18:31:40,650 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 18:31:40,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 18:31:40,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 18:31:40,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 18:31:40,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:31:40,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 18:31:40,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 18:31:40,651 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 18:31:40,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 18:31:40,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 18:31:40,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 18:31:40,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 18:31:40,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 18:31:40,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 18:31:40,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 18:31:40,652 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 [2025-02-07 18:31:40,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 18:31:40,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 18:31:40,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 18:31:40,911 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 18:31:40,912 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 18:31:40,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2025-02-07 18:31:42,117 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7146063fd/9650a66e2f634c969fdb77af318051f9/FLAGa085be309 [2025-02-07 18:31:42,445 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 18:31:42,446 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2025-02-07 18:31:42,452 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7146063fd/9650a66e2f634c969fdb77af318051f9/FLAGa085be309 [2025-02-07 18:31:42,720 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7146063fd/9650a66e2f634c969fdb77af318051f9 [2025-02-07 18:31:42,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 18:31:42,728 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 18:31:42,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 18:31:42,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 18:31:42,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 18:31:42,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4481a9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42, skipping insertion in model container [2025-02-07 18:31:42,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,747 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 18:31:42,840 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2025-02-07 18:31:42,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:31:42,855 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 18:31:42,862 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2025-02-07 18:31:42,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:31:42,873 INFO L204 MainTranslator]: Completed translation [2025-02-07 18:31:42,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42 WrapperNode [2025-02-07 18:31:42,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 18:31:42,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 18:31:42,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 18:31:42,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 18:31:42,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,884 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,895 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2025-02-07 18:31:42,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 18:31:42,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 18:31:42,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 18:31:42,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 18:31:42,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,902 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,907 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]. [2025-02-07 18:31:42,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,910 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 18:31:42,912 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 18:31:42,912 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 18:31:42,912 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 18:31:42,913 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (1/1) ... [2025-02-07 18:31:42,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:31:42,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:31:42,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 18:31:42,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 18:31:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 18:31:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 18:31:42,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 18:31:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 18:31:43,016 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 18:31:43,017 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 18:31:43,127 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-02-07 18:31:43,127 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 18:31:43,133 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 18:31:43,133 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 18:31:43,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:31:43 BoogieIcfgContainer [2025-02-07 18:31:43,133 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 18:31:43,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 18:31:43,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 18:31:43,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 18:31:43,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 06:31:42" (1/3) ... [2025-02-07 18:31:43,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bdf661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:31:43, skipping insertion in model container [2025-02-07 18:31:43,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:42" (2/3) ... [2025-02-07 18:31:43,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bdf661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:31:43, skipping insertion in model container [2025-02-07 18:31:43,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:31:43" (3/3) ... [2025-02-07 18:31:43,141 INFO L128 eAbstractionObserver]: Analyzing ICFG digits_while.c [2025-02-07 18:31:43,152 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 18:31:43,153 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG digits_while.c that has 1 procedures, 8 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 18:31:43,198 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 18:31:43,214 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;@3ee9447d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 18:31:43,214 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 18:31:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:31:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-07 18:31:43,227 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:31:43,228 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-07 18:31:43,228 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:31:43,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:31:43,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1136958, now seen corresponding path program 1 times [2025-02-07 18:31:43,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:31:43,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779163848] [2025-02-07 18:31:43,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:31:43,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:31:43,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-07 18:31:43,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-07 18:31:43,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:31:43,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 18:31:43,305 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-07 18:31:43,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-07 18:31:43,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-07 18:31:43,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:31:43,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 18:31:43,326 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-07 18:31:43,328 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-07 18:31:43,329 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 18:31:43,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 18:31:43,333 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-07 18:31:43,343 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 18:31:43,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 06:31:43 BoogieIcfgContainer [2025-02-07 18:31:43,345 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 18:31:43,346 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 18:31:43,346 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 18:31:43,346 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 18:31:43,347 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:31:43" (3/4) ... [2025-02-07 18:31:43,349 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-07 18:31:43,349 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 18:31:43,350 INFO L158 Benchmark]: Toolchain (without parser) took 622.56ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 75.9MB in the end (delta: 35.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-07 18:31:43,350 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:31:43,351 INFO L158 Benchmark]: CACSL2BoogieTranslator took 145.11ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 100.6MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 18:31:43,351 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.81ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 99.6MB in the end (delta: 963.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:31:43,351 INFO L158 Benchmark]: Boogie Preprocessor took 15.47ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 98.7MB in the end (delta: 945.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:31:43,351 INFO L158 Benchmark]: IcfgBuilder took 221.19ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 88.1MB in the end (delta: 10.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-07 18:31:43,352 INFO L158 Benchmark]: TraceAbstraction took 210.65ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 75.9MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 18:31:43,352 INFO L158 Benchmark]: Witness Printer took 3.33ms. Allocated memory is still 142.6MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 18:31:43,353 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 145.11ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 100.6MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.81ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 99.6MB in the end (delta: 963.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.47ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 98.7MB in the end (delta: 945.2kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 221.19ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 88.1MB in the end (delta: 10.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 210.65ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 75.9MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 3.33ms. Allocated memory is still 142.6MB. Free memory is still 75.9MB. 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: 4]: 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 someBinaryArithmeticDOUBLEoperation at line 8, overapproximation of someBinaryLONGDOUBLEComparisonOperation at line 12. Possible FailurePath: [L8] long double x = 1.0/7.0; [L9] long long res = 0; [L11] int i = 1; VAL [i=1, res=0] [L12] COND FALSE !(x != 0) [L19] CALL __VERIFIER_assert(res == 67050) [L4] COND TRUE !(cond) [L4] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2025-02-07 18:31:43,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-esbmc-regression/digits_while.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 18:31:45,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 18:31:45,511 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-02-07 18:31:45,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 18:31:45,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 18:31:45,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 18:31:45,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 18:31:45,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 18:31:45,545 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 18:31:45,546 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 18:31:45,546 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 18:31:45,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 18:31:45,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 18:31:45,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 18:31:45,547 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 18:31:45,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 18:31:45,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 18:31:45,547 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 18:31:45,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 18:31:45,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 18:31:45,547 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 18:31:45,547 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 18:31:45,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 18:31:45,565 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:31:45,565 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 18:31:45,565 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 18:31:45,566 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-07 18:31:45,566 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-07 18:31:45,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 18:31:45,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 18:31:45,566 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 18:31:45,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 18:31:45,566 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 [2025-02-07 18:31:45,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 18:31:45,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 18:31:45,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 18:31:45,836 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 18:31:45,836 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 18:31:45,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2025-02-07 18:31:47,021 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/79f4b24ac/4fa0218766174b22b2e47f04cf1a51e8/FLAG75a2f1b3c [2025-02-07 18:31:47,278 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 18:31:47,279 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2025-02-07 18:31:47,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/79f4b24ac/4fa0218766174b22b2e47f04cf1a51e8/FLAG75a2f1b3c [2025-02-07 18:31:47,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/79f4b24ac/4fa0218766174b22b2e47f04cf1a51e8 [2025-02-07 18:31:47,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 18:31:47,612 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 18:31:47,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 18:31:47,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 18:31:47,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 18:31:47,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522cb537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47, skipping insertion in model container [2025-02-07 18:31:47,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,630 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 18:31:47,734 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2025-02-07 18:31:47,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:31:47,759 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 18:31:47,766 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2025-02-07 18:31:47,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:31:47,785 INFO L204 MainTranslator]: Completed translation [2025-02-07 18:31:47,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47 WrapperNode [2025-02-07 18:31:47,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 18:31:47,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 18:31:47,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 18:31:47,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 18:31:47,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,799 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,808 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2025-02-07 18:31:47,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 18:31:47,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 18:31:47,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 18:31:47,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 18:31:47,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,815 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,821 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]. [2025-02-07 18:31:47,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,825 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 18:31:47,828 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 18:31:47,828 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 18:31:47,828 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 18:31:47,829 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (1/1) ... [2025-02-07 18:31:47,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:31:47,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:31:47,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 18:31:47,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 18:31:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 18:31:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 18:31:47,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 18:31:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-07 18:31:47,915 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 18:31:47,916 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 18:31:52,072 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-02-07 18:31:52,073 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 18:31:52,080 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 18:31:52,081 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 18:31:52,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:31:52 BoogieIcfgContainer [2025-02-07 18:31:52,082 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 18:31:52,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 18:31:52,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 18:31:52,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 18:31:52,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 06:31:47" (1/3) ... [2025-02-07 18:31:52,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c065cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:31:52, skipping insertion in model container [2025-02-07 18:31:52,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:31:47" (2/3) ... [2025-02-07 18:31:52,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c065cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:31:52, skipping insertion in model container [2025-02-07 18:31:52,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:31:52" (3/3) ... [2025-02-07 18:31:52,090 INFO L128 eAbstractionObserver]: Analyzing ICFG digits_while.c [2025-02-07 18:31:52,101 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 18:31:52,104 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG digits_while.c that has 1 procedures, 8 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 18:31:52,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 18:31:52,150 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;@7b9eb1d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 18:31:52,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 18:31:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:31:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-07 18:31:52,157 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:31:52,157 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-07 18:31:52,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:31:52,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:31:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1136958, now seen corresponding path program 1 times [2025-02-07 18:31:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 18:31:52,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887827966] [2025-02-07 18:31:52,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:31:52,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-07 18:31:52,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-07 18:31:52,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-07 18:31:52,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2025-02-07 18:31:52,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-07 18:31:52,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-07 18:31:52,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:31:52,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:31:52,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-07 18:31:52,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:31:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 18:31:52,362 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 18:31:52,363 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-07 18:31:52,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887827966] [2025-02-07 18:31:52,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887827966] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 18:31:52,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 18:31:52,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 18:31:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984966468] [2025-02-07 18:31:52,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 18:31:52,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 18:31:52,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-07 18:31:52,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 18:31:52,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 18:31:52,384 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:31:56,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:31:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:31:57,328 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2025-02-07 18:31:57,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 18:31:57,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-07 18:31:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:31:57,340 INFO L225 Difference]: With dead ends: 15 [2025-02-07 18:31:57,341 INFO L226 Difference]: Without dead ends: 6 [2025-02-07 18:31:57,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 18:31:57,346 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-02-07 18:31:57,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2025-02-07 18:31:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2025-02-07 18:31:57,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2025-02-07 18:31:57,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) 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) [2025-02-07 18:31:57,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2025-02-07 18:31:57,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2025-02-07 18:31:57,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:31:57,386 INFO L471 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2025-02-07 18:31:57,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 18:31:57,386 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2025-02-07 18:31:57,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-07 18:31:57,386 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:31:57,386 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-07 18:31:57,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2025-02-07 18:31:57,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-07 18:31:57,589 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:31:57,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:31:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash 35277444, now seen corresponding path program 1 times [2025-02-07 18:31:57,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 18:31:57,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636737276] [2025-02-07 18:31:57,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:31:57,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-07 18:31:57,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-07 18:31:57,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-07 18:31:57,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2025-02-07 18:31:57,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-07 18:31:58,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-07 18:31:58,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:31:58,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:31:58,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 18:31:58,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:32:00,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 18:32:00,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:32:08,416 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-07 18:32:12,463 WARN L851 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2025-02-07 18:32:16,507 WARN L873 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2025-02-07 18:32:16,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2025-02-07 18:32:16,508 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-07 18:32:16,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636737276] [2025-02-07 18:32:16,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636737276] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:32:16,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 18:32:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2025-02-07 18:32:16,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979250961] [2025-02-07 18:32:16,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 18:32:16,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 18:32:16,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-07 18:32:16,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 18:32:16,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2025-02-07 18:32:16,513 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) [2025-02-07 18:32:20,573 WARN L851 $PredicateComparison]: unable to prove that (and (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))) |c_ULTIMATE.start_main_~x~0#1|)) is different from false [2025-02-07 18:32:24,618 WARN L873 $PredicateComparison]: unable to prove that (and (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))) |c_ULTIMATE.start_main_~x~0#1|)) is different from true [2025-02-07 18:32:28,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:32:32,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:32:36,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:32:40,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:32:45,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:32:49,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:32:53,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-07 18:32:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:32:53,077 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2025-02-07 18:32:53,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 18:32:53,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) Word has length 5 [2025-02-07 18:32:53,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:32:53,134 INFO L225 Difference]: With dead ends: 10 [2025-02-07 18:32:53,134 INFO L226 Difference]: Without dead ends: 7 [2025-02-07 18:32:53,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=13, Invalid=11, Unknown=4, NotChecked=14, Total=42 [2025-02-07 18:32:53,135 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2025-02-07 18:32:53,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 7 Unknown, 8 Unchecked, 28.5s Time] [2025-02-07 18:32:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2025-02-07 18:32:53,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2025-02-07 18:32:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2025-02-07 18:32:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2025-02-07 18:32:53,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2025-02-07 18:32:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:32:53,138 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2025-02-07 18:32:53,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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) [2025-02-07 18:32:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2025-02-07 18:32:53,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-07 18:32:53,138 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:32:53,138 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2025-02-07 18:32:53,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2025-02-07 18:32:53,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-07 18:32:53,343 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:32:53,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:32:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1093632510, now seen corresponding path program 2 times [2025-02-07 18:32:53,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-07 18:32:53,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021958050] [2025-02-07 18:32:53,344 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 18:32:53,344 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-07 18:32:53,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-07 18:32:53,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-07 18:32:53,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2025-02-07 18:32:53,380 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 6 statements into 2 equivalence classes. [2025-02-07 18:32:54,305 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 6 of 6 statements. [2025-02-07 18:32:54,305 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 18:32:54,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:32:54,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-07 18:32:54,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:33:04,890 WARN L286 SmtUtils]: Spent 7.68s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-07 18:33:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 18:33:22,952 INFO L312 TraceCheckSpWp]: Computing backward predicates...