./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/loop-floats-scientific-comp/loop1-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 16:22:46,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 16:22:46,476 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 16:22:46,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 16:22:46,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 16:22:46,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 16:22:46,504 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 16:22:46,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 16:22:46,504 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 16:22:46,504 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 16:22:46,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 16:22:46,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 16:22:46,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 16:22:46,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 16:22:46,505 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 16:22:46,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 16:22:46,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 16:22:46,505 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 16:22:46,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 16:22:46,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 16:22:46,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 16:22:46,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 16:22:46,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 16:22:46,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 16:22:46,506 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 16:22:46,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 16:22:46,506 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 16:22:46,506 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 16:22:46,506 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 16:22:46,506 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 16:22:46,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 16:22:46,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 16:22:46,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 16:22:46,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 16:22:46,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 16:22:46,506 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 16:22:46,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 16:22:46,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 16:22:46,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 16:22:46,507 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 16:22:46,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 16:22:46,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 16:22:46,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 16:22:46,507 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 [2025-03-16 16:22:46,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 16:22:46,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 16:22:46,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 16:22:46,715 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 16:22:46,715 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 16:22:46,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2025-03-16 16:22:47,832 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc654e08/ee33f6a5ee8a410caccf38f8451faac3/FLAG300d6b3d4 [2025-03-16 16:22:48,061 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 16:22:48,061 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2025-03-16 16:22:48,067 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc654e08/ee33f6a5ee8a410caccf38f8451faac3/FLAG300d6b3d4 [2025-03-16 16:22:48,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc654e08/ee33f6a5ee8a410caccf38f8451faac3 [2025-03-16 16:22:48,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 16:22:48,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 16:22:48,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 16:22:48,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 16:22:48,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 16:22:48,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fa3121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48, skipping insertion in model container [2025-03-16 16:22:48,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,418 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 16:22:48,512 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/loop-floats-scientific-comp/loop1-1.c[497,510] [2025-03-16 16:22:48,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 16:22:48,529 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 16:22:48,536 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/loop-floats-scientific-comp/loop1-1.c[497,510] [2025-03-16 16:22:48,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 16:22:48,548 INFO L204 MainTranslator]: Completed translation [2025-03-16 16:22:48,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48 WrapperNode [2025-03-16 16:22:48,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 16:22:48,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 16:22:48,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 16:22:48,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 16:22:48,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,560 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,570 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-16 16:22:48,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 16:22:48,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 16:22:48,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 16:22:48,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 16:22:48,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,580 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,590 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 16:22:48,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,592 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,593 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 16:22:48,599 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 16:22:48,599 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 16:22:48,600 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 16:22:48,600 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (1/1) ... [2025-03-16 16:22:48,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 16:22:48,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 16:22:48,626 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 16:22:48,629 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 16:22:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 16:22:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-16 16:22:48,647 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-16 16:22:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 16:22:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 16:22:48,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 16:22:48,689 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 16:22:48,690 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 16:22:48,766 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-16 16:22:48,767 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 16:22:48,772 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 16:22:48,772 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 16:22:48,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 04:22:48 BoogieIcfgContainer [2025-03-16 16:22:48,773 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 16:22:48,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 16:22:48,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 16:22:48,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 16:22:48,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 04:22:48" (1/3) ... [2025-03-16 16:22:48,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d7623a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 04:22:48, skipping insertion in model container [2025-03-16 16:22:48,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:48" (2/3) ... [2025-03-16 16:22:48,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d7623a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 04:22:48, skipping insertion in model container [2025-03-16 16:22:48,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 04:22:48" (3/3) ... [2025-03-16 16:22:48,780 INFO L128 eAbstractionObserver]: Analyzing ICFG loop1-1.c [2025-03-16 16:22:48,791 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 16:22:48,792 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG loop1-1.c that has 2 procedures, 17 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 16:22:48,826 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 16:22:48,836 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;@6215200c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 16:22:48,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 16:22:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-16 16:22:48,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-16 16:22:48,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 16:22:48,845 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 16:22:48,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 16:22:48,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 16:22:48,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1256890019, now seen corresponding path program 1 times [2025-03-16 16:22:48,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 16:22:48,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224841478] [2025-03-16 16:22:48,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 16:22:48,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 16:22:48,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-16 16:22:48,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-16 16:22:48,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:22:48,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 16:22:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 16:22:48,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 16:22:48,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224841478] [2025-03-16 16:22:48,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224841478] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 16:22:48,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 16:22:48,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 16:22:48,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242662649] [2025-03-16 16:22:48,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 16:22:48,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 16:22:48,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 16:22:48,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 16:22:48,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 16:22:48,973 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-16 16:22:48,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 16:22:48,982 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2025-03-16 16:22:48,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 16:22:48,983 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2025-03-16 16:22:48,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 16:22:48,986 INFO L225 Difference]: With dead ends: 32 [2025-03-16 16:22:48,986 INFO L226 Difference]: Without dead ends: 14 [2025-03-16 16:22:48,988 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 16:22:48,990 INFO L435 NwaCegarLoop]: 18 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, 18 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 16:22:48,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 16:22:48,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-16 16:22:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-16 16:22:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-16 16:22:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2025-03-16 16:22:49,015 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 16 [2025-03-16 16:22:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 16:22:49,016 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2025-03-16 16:22:49,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-16 16:22:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2025-03-16 16:22:49,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-16 16:22:49,017 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 16:22:49,017 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 16:22:49,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 16:22:49,018 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 16:22:49,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 16:22:49,018 INFO L85 PathProgramCache]: Analyzing trace with hash -309776700, now seen corresponding path program 1 times [2025-03-16 16:22:49,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 16:22:49,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569734789] [2025-03-16 16:22:49,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 16:22:49,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 16:22:49,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-16 16:22:49,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-16 16:22:49,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:22:49,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 16:22:49,041 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-16 16:22:49,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-16 16:22:49,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-16 16:22:49,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:22:49,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 16:22:49,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-16 16:22:49,060 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-16 16:22:49,061 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 16:22:49,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 16:22:49,064 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-16 16:22:49,080 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 16:22:49,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 04:22:49 BoogieIcfgContainer [2025-03-16 16:22:49,082 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 16:22:49,083 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 16:22:49,083 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 16:22:49,083 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 16:22:49,083 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 04:22:48" (3/4) ... [2025-03-16 16:22:49,085 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-16 16:22:49,085 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 16:22:49,086 INFO L158 Benchmark]: Toolchain (without parser) took 683.19ms. Allocated memory is still 142.6MB. Free memory was 110.6MB in the beginning and 64.9MB in the end (delta: 45.8MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-16 16:22:49,086 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 16:22:49,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 146.07ms. Allocated memory is still 142.6MB. Free memory was 110.6MB in the beginning and 100.1MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 16:22:49,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.39ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 98.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 16:22:49,087 INFO L158 Benchmark]: Boogie Preprocessor took 26.14ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 97.5MB in the end (delta: 948.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 16:22:49,087 INFO L158 Benchmark]: IcfgBuilder took 173.62ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 87.1MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 16:22:49,090 INFO L158 Benchmark]: TraceAbstraction took 307.99ms. Allocated memory is still 142.6MB. Free memory was 86.2MB in the beginning and 65.7MB in the end (delta: 20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-16 16:22:49,091 INFO L158 Benchmark]: Witness Printer took 2.59ms. Allocated memory is still 142.6MB. Free memory was 65.7MB in the beginning and 64.9MB in the end (delta: 798.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 16:22:49,092 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 146.07ms. Allocated memory is still 142.6MB. Free memory was 110.6MB in the beginning and 100.1MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.39ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 98.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.14ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 97.5MB in the end (delta: 948.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 173.62ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 87.1MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 307.99ms. Allocated memory is still 142.6MB. Free memory was 86.2MB in the beginning and 65.7MB in the end (delta: 20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.59ms. Allocated memory is still 142.6MB. Free memory was 65.7MB in the beginning and 64.9MB in the end (delta: 798.3kB). 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: 13]: 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 someBinaryFLOATComparisonOperation at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 22, overapproximation of someBinaryDOUBLEComparisonOperation at line 21, overapproximation of someBinaryArithmeticFLOAToperation at line 26, overapproximation of someBinaryArithmeticFLOAToperation at line 31. Possible FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] CALL assume_abort_if_not(x > -1.0) VAL [\old(cond)=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1] [L21] RET assume_abort_if_not(x > -1.0) [L22] CALL assume_abort_if_not(x < 1.0) VAL [\old(cond)=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1] [L22] RET assume_abort_if_not(x < 1.0) [L23] float exp = 1.0 ; [L24] float term = 1.0 ; [L25] unsigned int count = 1 ; [L26] float result = 2*(1/(1-x)) ; [L27] int temp ; VAL [count=1] [L29] COND TRUE 1 [L31] term = term * (x/count) [L32] exp = exp + term [L33] count++ [L35] temp = __VERIFIER_nondet_int() [L36] COND TRUE temp ==0 VAL [count=2] [L39] CALL __VERIFIER_assert( result >= exp ) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 23 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 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 16:22:49,103 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/loop-floats-scientific-comp/loop1-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 16:22:50,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 16:22:50,935 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-16 16:22:50,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 16:22:50,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 16:22:50,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 16:22:50,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 16:22:50,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 16:22:50,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 16:22:50,964 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 16:22:50,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 16:22:50,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 16:22:50,965 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 16:22:50,965 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 16:22:50,965 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 16:22:50,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 16:22:50,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 16:22:50,966 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 16:22:50,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 16:22:50,966 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 16:22:50,966 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 16:22:50,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 16:22:50,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 16:22:50,966 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-16 16:22:50,967 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-16 16:22:50,967 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-16 16:22:50,967 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 16:22:50,967 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 16:22:50,967 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 16:22:50,967 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 16:22:50,967 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 16:22:50,968 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 16:22:50,968 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 16:22:50,968 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 16:22:50,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 16:22:50,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 16:22:50,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 16:22:50,968 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 16:22:50,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 16:22:50,968 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-16 16:22:50,968 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-16 16:22:50,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 16:22:50,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 16:22:50,969 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 16:22:50,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 16:22:50,969 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 [2025-03-16 16:22:51,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 16:22:51,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 16:22:51,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 16:22:51,248 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 16:22:51,248 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 16:22:51,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2025-03-16 16:22:52,401 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae85a8464/ed9fff1b408c470f89ed4241e7140d47/FLAG6e75382d2 [2025-03-16 16:22:52,612 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 16:22:52,613 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2025-03-16 16:22:52,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae85a8464/ed9fff1b408c470f89ed4241e7140d47/FLAG6e75382d2 [2025-03-16 16:22:52,633 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae85a8464/ed9fff1b408c470f89ed4241e7140d47 [2025-03-16 16:22:52,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 16:22:52,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 16:22:52,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 16:22:52,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 16:22:52,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 16:22:52,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773d81b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52, skipping insertion in model container [2025-03-16 16:22:52,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,655 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 16:22:52,754 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/loop-floats-scientific-comp/loop1-1.c[497,510] [2025-03-16 16:22:52,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 16:22:52,779 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 16:22:52,787 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/loop-floats-scientific-comp/loop1-1.c[497,510] [2025-03-16 16:22:52,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 16:22:52,801 INFO L204 MainTranslator]: Completed translation [2025-03-16 16:22:52,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52 WrapperNode [2025-03-16 16:22:52,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 16:22:52,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 16:22:52,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 16:22:52,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 16:22:52,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,824 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-16 16:22:52,824 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 16:22:52,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 16:22:52,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 16:22:52,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 16:22:52,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,833 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,845 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 16:22:52,845 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,845 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,849 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 16:22:52,860 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 16:22:52,860 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 16:22:52,860 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 16:22:52,861 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (1/1) ... [2025-03-16 16:22:52,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 16:22:52,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 16:22:52,910 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 16:22:52,913 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 16:22:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 16:22:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-16 16:22:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-16 16:22:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-16 16:22:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 16:22:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 16:22:52,984 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 16:22:52,986 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 16:22:58,594 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-16 16:22:58,595 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 16:22:58,600 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 16:22:58,601 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 16:22:58,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 04:22:58 BoogieIcfgContainer [2025-03-16 16:22:58,601 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 16:22:58,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 16:22:58,606 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 16:22:58,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 16:22:58,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 04:22:52" (1/3) ... [2025-03-16 16:22:58,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60278c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 04:22:58, skipping insertion in model container [2025-03-16 16:22:58,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:22:52" (2/3) ... [2025-03-16 16:22:58,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60278c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 04:22:58, skipping insertion in model container [2025-03-16 16:22:58,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 04:22:58" (3/3) ... [2025-03-16 16:22:58,611 INFO L128 eAbstractionObserver]: Analyzing ICFG loop1-1.c [2025-03-16 16:22:58,621 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 16:22:58,622 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG loop1-1.c that has 2 procedures, 17 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 16:22:58,651 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 16:22:58,659 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;@1f960b6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 16:22:58,659 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 16:22:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-16 16:22:58,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-16 16:22:58,665 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 16:22:58,665 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 16:22:58,666 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 16:22:58,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 16:22:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1256890019, now seen corresponding path program 1 times [2025-03-16 16:22:58,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 16:22:58,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281435289] [2025-03-16 16:22:58,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 16:22:58,675 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 [2025-03-16 16:22:58,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 16:22:58,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/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) [2025-03-16 16:22:58,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2025-03-16 16:22:58,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-16 16:22:58,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-16 16:22:58,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:22:58,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 16:22:58,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 16:22:58,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 16:22:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 16:22:58,882 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 16:22:58,882 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 16:22:58,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281435289] [2025-03-16 16:22:58,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281435289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 16:22:58,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 16:22:58,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 16:22:58,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656719801] [2025-03-16 16:22:58,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 16:22:58,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 16:22:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 16:22:58,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 16:22:58,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 16:22:58,908 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-16 16:22:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 16:22:58,916 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2025-03-16 16:22:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 16:22:58,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2025-03-16 16:22:58,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 16:22:58,921 INFO L225 Difference]: With dead ends: 32 [2025-03-16 16:22:58,922 INFO L226 Difference]: Without dead ends: 14 [2025-03-16 16:22:58,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 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 16:22:58,925 INFO L435 NwaCegarLoop]: 18 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, 18 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 16:22:58,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 16:22:58,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-16 16:22:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-16 16:22:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-16 16:22:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2025-03-16 16:22:58,950 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 16 [2025-03-16 16:22:58,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 16:22:58,951 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2025-03-16 16:22:58,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-16 16:22:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2025-03-16 16:22:58,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-16 16:22:58,953 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 16:22:58,954 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 16:22:58,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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)] Forceful destruction successful, exit code 0 [2025-03-16 16:22:59,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/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 [2025-03-16 16:22:59,155 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 16:22:59,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 16:22:59,156 INFO L85 PathProgramCache]: Analyzing trace with hash -309776700, now seen corresponding path program 1 times [2025-03-16 16:22:59,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 16:22:59,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645801321] [2025-03-16 16:22:59,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 16:22:59,156 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 [2025-03-16 16:22:59,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 16:22:59,158 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/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) [2025-03-16 16:22:59,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2025-03-16 16:22:59,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-16 16:23:00,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-16 16:23:00,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:23:00,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 16:23:00,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-16 16:23:00,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 16:23:53,453 WARN L286 SmtUtils]: Spent 20.25s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-16 16:24:04,850 WARN L286 SmtUtils]: Spent 6.97s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-16 16:24:10,316 WARN L286 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-16 16:24:15,993 WARN L286 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-16 16:24:20,036 WARN L851 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1|)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= |c_ULTIMATE.start_main_~exp~0#1| (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven .cse1))) (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv1 32))))))) (fp.gt .cse2 (fp.neg .cse1)) (fp.lt .cse2 .cse1) (= |c_ULTIMATE.start_main_~result~0#1| (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32)) (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32)))) (fp.div roundNearestTiesToEven .cse3 (fp.sub roundNearestTiesToEven .cse3 |ULTIMATE.start_main_~x~0#1|)))))))) is different from false [2025-03-16 16:24:29,715 WARN L286 SmtUtils]: Spent 7.24s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)