./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/floats-esbmc-regression/Float_div.i.p+cfa-reducer.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 afde2bd0ce234bf8b4933e5a5437c8e1946600ea23fb2a4648cacd72bbfda8e3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 11:42:05,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 11:42:05,172 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 11:42:05,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 11:42:05,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 11:42:05,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 11:42:05,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 11:42:05,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 11:42:05,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 11:42:05,188 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 11:42:05,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 11:42:05,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 11:42:05,189 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 11:42:05,189 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 11:42:05,189 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 11:42:05,189 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 11:42:05,189 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 11:42:05,189 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 11:42:05,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 11:42:05,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 11:42:05,190 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 11:42:05,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:42:05,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 11:42:05,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 11:42:05,191 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 11:42:05,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 11:42:05,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 11:42:05,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 11:42:05,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 11:42:05,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 11:42:05,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 11:42:05,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 11:42:05,191 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 -> afde2bd0ce234bf8b4933e5a5437c8e1946600ea23fb2a4648cacd72bbfda8e3 [2025-03-03 11:42:05,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 11:42:05,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 11:42:05,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 11:42:05,391 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 11:42:05,391 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 11:42:05,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2025-03-03 11:42:06,475 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f733ccfd6/cdb9d2f71c584d90b403cbb41bb6fd8f/FLAG96a64de93 [2025-03-03 11:42:06,680 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 11:42:06,681 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2025-03-03 11:42:06,712 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f733ccfd6/cdb9d2f71c584d90b403cbb41bb6fd8f/FLAG96a64de93 [2025-03-03 11:42:07,051 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f733ccfd6/cdb9d2f71c584d90b403cbb41bb6fd8f [2025-03-03 11:42:07,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 11:42:07,054 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 11:42:07,054 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 11:42:07,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 11:42:07,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 11:42:07,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f1c968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07, skipping insertion in model container [2025-03-03 11:42:07,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,066 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 11:42:07,146 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/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c[667,680] [2025-03-03 11:42:07,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:42:07,159 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 11:42:07,167 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/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c[667,680] [2025-03-03 11:42:07,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:42:07,177 INFO L204 MainTranslator]: Completed translation [2025-03-03 11:42:07,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07 WrapperNode [2025-03-03 11:42:07,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 11:42:07,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 11:42:07,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 11:42:07,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 11:42:07,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,195 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2025-03-03 11:42:07,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 11:42:07,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 11:42:07,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 11:42:07,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 11:42:07,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,200 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,206 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]. [2025-03-03 11:42:07,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,207 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,209 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 11:42:07,210 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 11:42:07,210 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 11:42:07,210 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 11:42:07,211 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (1/1) ... [2025-03-03 11:42:07,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:42:07,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:42:07,232 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) [2025-03-03 11:42:07,233 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 [2025-03-03 11:42:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 11:42:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 11:42:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 11:42:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 11:42:07,286 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 11:42:07,288 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 11:42:07,345 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L20: havoc main_~__tmp_1~0#1, main_~__VERIFIER_assert__cond~0#1; [2025-03-03 11:42:07,354 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-03-03 11:42:07,354 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 11:42:07,362 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 11:42:07,363 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 11:42:07,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:42:07 BoogieIcfgContainer [2025-03-03 11:42:07,363 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 11:42:07,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 11:42:07,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 11:42:07,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 11:42:07,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:42:07" (1/3) ... [2025-03-03 11:42:07,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f5a736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:42:07, skipping insertion in model container [2025-03-03 11:42:07,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:07" (2/3) ... [2025-03-03 11:42:07,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f5a736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:42:07, skipping insertion in model container [2025-03-03 11:42:07,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:42:07" (3/3) ... [2025-03-03 11:42:07,370 INFO L128 eAbstractionObserver]: Analyzing ICFG Float_div.i.p+cfa-reducer.c [2025-03-03 11:42:07,382 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 11:42:07,383 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Float_div.i.p+cfa-reducer.c that has 1 procedures, 9 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-03 11:42:07,427 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 11:42:07,439 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;@38af6164, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 11:42:07,439 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 11:42:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:42:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-03 11:42:07,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:42:07,448 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-03 11:42:07,448 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:42:07,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:42:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash 40048999, now seen corresponding path program 1 times [2025-03-03 11:42:07,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:42:07,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879102949] [2025-03-03 11:42:07,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:42:07,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:42:07,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-03 11:42:07,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-03 11:42:07,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:42:07,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 11:42:07,521 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 11:42:07,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-03 11:42:07,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-03 11:42:07,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:42:07,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 11:42:07,540 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-03 11:42:07,541 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 11:42:07,541 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 11:42:07,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 11:42:07,545 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-03 11:42:07,554 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 11:42:07,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 11:42:07 BoogieIcfgContainer [2025-03-03 11:42:07,556 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 11:42:07,557 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 11:42:07,557 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 11:42:07,557 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 11:42:07,557 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:42:07" (3/4) ... [2025-03-03 11:42:07,559 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-03 11:42:07,559 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 11:42:07,560 INFO L158 Benchmark]: Toolchain (without parser) took 506.63ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 75.7MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-03 11:42:07,560 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 201.3MB. Free memory is still 127.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:42:07,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 123.92ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 99.7MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 11:42:07,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.14ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 98.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:42:07,561 INFO L158 Benchmark]: Boogie Preprocessor took 14.06ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.4MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 11:42:07,561 INFO L158 Benchmark]: IcfgBuilder took 153.46ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 87.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 11:42:07,561 INFO L158 Benchmark]: TraceAbstraction took 191.87ms. Allocated memory is still 142.6MB. Free memory was 87.8MB in the beginning and 76.8MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 11:42:07,562 INFO L158 Benchmark]: Witness Printer took 2.68ms. Allocated memory is still 142.6MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 11:42:07,563 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 201.3MB. Free memory is still 127.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 123.92ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 99.7MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.14ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 98.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.06ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.4MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 153.46ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 87.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 191.87ms. Allocated memory is still 142.6MB. Free memory was 87.8MB in the beginning and 76.8MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 2.68ms. Allocated memory is still 142.6MB. Free memory is still 75.7MB. 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: 27]: 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 10, overapproximation of someBinaryFLOATComparisonOperation at line 12. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] float main__x = 1.0; [L10] float main__x1 = main__x / 2.5; VAL [__return_main=0] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_main=0] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L27] reach_error() VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, 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=9occurred 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, 5 NumberOfCodeBlocks, 5 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 [2025-03-03 11:42:07,577 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/floats-esbmc-regression/Float_div.i.p+cfa-reducer.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 afde2bd0ce234bf8b4933e5a5437c8e1946600ea23fb2a4648cacd72bbfda8e3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 11:42:09,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 11:42:09,450 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-03 11:42:09,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 11:42:09,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 11:42:09,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 11:42:09,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 11:42:09,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 11:42:09,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 11:42:09,483 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 11:42:09,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 11:42:09,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 11:42:09,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 11:42:09,484 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 11:42:09,485 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 11:42:09,485 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 11:42:09,485 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 11:42:09,485 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 11:42:09,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 11:42:09,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 11:42:09,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 11:42:09,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 11:42:09,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 11:42:09,486 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-03 11:42:09,486 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-03 11:42:09,486 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-03 11:42:09,486 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 11:42:09,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 11:42:09,486 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 11:42:09,486 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 11:42:09,486 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 11:42:09,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 11:42:09,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 11:42:09,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 11:42:09,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:42:09,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 11:42:09,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 11:42:09,487 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 11:42:09,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 11:42:09,487 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-03 11:42:09,487 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-03 11:42:09,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 11:42:09,488 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 11:42:09,488 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 11:42:09,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 11:42:09,488 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 -> afde2bd0ce234bf8b4933e5a5437c8e1946600ea23fb2a4648cacd72bbfda8e3 [2025-03-03 11:42:09,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 11:42:09,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 11:42:09,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 11:42:09,722 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 11:42:09,722 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 11:42:09,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2025-03-03 11:42:10,862 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e0a4beb1/2448cd72ca8a4820b4227ea7da67efef/FLAGdac23f0fc [2025-03-03 11:42:11,030 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 11:42:11,031 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2025-03-03 11:42:11,036 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e0a4beb1/2448cd72ca8a4820b4227ea7da67efef/FLAGdac23f0fc [2025-03-03 11:42:11,420 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e0a4beb1/2448cd72ca8a4820b4227ea7da67efef [2025-03-03 11:42:11,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 11:42:11,423 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 11:42:11,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 11:42:11,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 11:42:11,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 11:42:11,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674cd4d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11, skipping insertion in model container [2025-03-03 11:42:11,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,441 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 11:42:11,535 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/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c[667,680] [2025-03-03 11:42:11,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:42:11,547 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 11:42:11,555 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/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c[667,680] [2025-03-03 11:42:11,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:42:11,568 INFO L204 MainTranslator]: Completed translation [2025-03-03 11:42:11,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11 WrapperNode [2025-03-03 11:42:11,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 11:42:11,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 11:42:11,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 11:42:11,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 11:42:11,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,590 INFO L138 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2025-03-03 11:42:11,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 11:42:11,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 11:42:11,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 11:42:11,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 11:42:11,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,597 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,604 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]. [2025-03-03 11:42:11,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,611 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,613 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 11:42:11,619 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 11:42:11,620 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 11:42:11,620 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 11:42:11,621 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (1/1) ... [2025-03-03 11:42:11,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:42:11,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:42:11,646 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) [2025-03-03 11:42:11,648 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 [2025-03-03 11:42:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 11:42:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 11:42:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 11:42:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-03 11:42:11,708 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 11:42:11,709 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 11:42:14,350 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L20: havoc main_~__tmp_1~0#1, main_~__VERIFIER_assert__cond~0#1; [2025-03-03 11:42:14,354 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-03-03 11:42:14,354 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 11:42:14,359 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 11:42:14,359 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 11:42:14,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:42:14 BoogieIcfgContainer [2025-03-03 11:42:14,359 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 11:42:14,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 11:42:14,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 11:42:14,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 11:42:14,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:42:11" (1/3) ... [2025-03-03 11:42:14,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa5c574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:42:14, skipping insertion in model container [2025-03-03 11:42:14,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:42:11" (2/3) ... [2025-03-03 11:42:14,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa5c574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:42:14, skipping insertion in model container [2025-03-03 11:42:14,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:42:14" (3/3) ... [2025-03-03 11:42:14,366 INFO L128 eAbstractionObserver]: Analyzing ICFG Float_div.i.p+cfa-reducer.c [2025-03-03 11:42:14,376 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 11:42:14,377 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Float_div.i.p+cfa-reducer.c that has 1 procedures, 9 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-03 11:42:14,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 11:42:14,414 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;@f04d456, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 11:42:14,415 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 11:42:14,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:42:14,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-03 11:42:14,420 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:42:14,420 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-03 11:42:14,421 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:42:14,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:42:14,424 INFO L85 PathProgramCache]: Analyzing trace with hash 40048999, now seen corresponding path program 1 times [2025-03-03 11:42:14,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 11:42:14,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442148411] [2025-03-03 11:42:14,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:42:14,431 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 [2025-03-03 11:42:14,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 11:42:14,433 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) [2025-03-03 11:42:14,435 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 [2025-03-03 11:42:14,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-03 11:42:14,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-03 11:42:14,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:42:14,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:42:14,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 11:42:14,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:42:21,148 WARN L873 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) |c_ULTIMATE.start_main_~main__x~0#1|) (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) is different from true [2025-03-03 11:42:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 11:42:21,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 11:42:21,157 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 11:42:21,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442148411] [2025-03-03 11:42:21,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442148411] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:42:21,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:42:21,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 11:42:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830968860] [2025-03-03 11:42:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:42:21,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 11:42:21,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 11:42:21,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 11:42:21,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-03 11:42:21,174 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:42:25,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 11:42:38,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 11:42:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:42:38,649 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2025-03-03 11:42:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 11:42:38,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-03 11:42:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:42:38,654 INFO L225 Difference]: With dead ends: 16 [2025-03-03 11:42:38,654 INFO L226 Difference]: Without dead ends: 7 [2025-03-03 11:42:38,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=8, Invalid=6, Unknown=2, NotChecked=4, Total=20 [2025-03-03 11:42:38,657 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2025-03-03 11:42:38,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 9 Unchecked, 7.2s Time] [2025-03-03 11:42:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2025-03-03 11:42:38,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2025-03-03 11:42:38,671 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) [2025-03-03 11:42:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2025-03-03 11:42:38,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2025-03-03 11:42:38,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:42:38,677 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2025-03-03 11:42:38,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:42:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2025-03-03 11:42:38,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-03 11:42:38,677 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:42:38,677 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-03 11:42:38,685 INFO L552 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)] Ended with exit code 0 [2025-03-03 11:42:38,878 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 [2025-03-03 11:42:38,878 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:42:38,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:42:38,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1241281701, now seen corresponding path program 1 times [2025-03-03 11:42:38,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 11:42:38,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287767073] [2025-03-03 11:42:38,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:42:38,879 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 [2025-03-03 11:42:38,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 11:42:38,881 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) [2025-03-03 11:42:38,882 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 [2025-03-03 11:42:38,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-03 11:42:39,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-03 11:42:39,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:42:39,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:42:39,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 11:42:39,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:42:45,850 WARN L286 SmtUtils]: Spent 6.39s 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) [2025-03-03 11:42:49,914 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) .cse0))) (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1|) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|))) is different from true [2025-03-03 11:42:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2025-03-03 11:42:49,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 11:42:58,099 WARN L286 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-03 11:43:02,149 WARN L851 $PredicateComparison]: unable to prove that (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) |c_ULTIMATE.start_main_~main__x1~0#1|)) is different from false [2025-03-03 11:43:11,252 WARN L286 SmtUtils]: Spent 8.12s 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) [2025-03-03 11:43:15,322 WARN L851 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)))) is different from false [2025-03-03 11:43:19,393 WARN L873 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)))) is different from true [2025-03-03 11:43:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2025-03-03 11:43:19,393 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 11:43:19,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287767073] [2025-03-03 11:43:19,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287767073] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 11:43:19,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 11:43:19,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-03 11:43:19,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607022861] [2025-03-03 11:43:19,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 11:43:19,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 11:43:19,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 11:43:19,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 11:43:19,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=14, Unknown=4, NotChecked=24, Total=56 [2025-03-03 11:43:19,395 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:43:23,487 WARN L873 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse1)))) (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2025-03-03 11:43:27,554 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (not (fp.eq ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1|) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|)) (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2025-03-03 11:43:31,608 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) .cse0))) (= ((_ to_fp 8 24) roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~main__x~0#1|) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|) (not (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|)))) is different from true [2025-03-03 11:43:33,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 11:43:33,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:43:33,457 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2025-03-03 11:43:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 11:43:33,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-03 11:43:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:43:33,458 INFO L225 Difference]: With dead ends: 11 [2025-03-03 11:43:33,458 INFO L226 Difference]: Without dead ends: 8 [2025-03-03 11:43:33,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=20, Invalid=17, Unknown=7, NotChecked=66, Total=110 [2025-03-03 11:43:33,459 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-03 11:43:33,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 29 Unchecked, 1.9s Time] [2025-03-03 11:43:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2025-03-03 11:43:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2025-03-03 11:43:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:43:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2025-03-03 11:43:33,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2025-03-03 11:43:33,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:43:33,460 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2025-03-03 11:43:33,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 11:43:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2025-03-03 11:43:33,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-03 11:43:33,460 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:43:33,461 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-03 11:43:33,471 INFO L552 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)] Ended with exit code 0 [2025-03-03 11:43:33,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /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 [2025-03-03 11:43:33,662 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:43:33,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:43:33,663 INFO L85 PathProgramCache]: Analyzing trace with hash -175210201, now seen corresponding path program 2 times [2025-03-03 11:43:33,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 11:43:33,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726887067] [2025-03-03 11:43:33,663 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 11:43:33,663 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 [2025-03-03 11:43:33,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 11:43:33,666 INFO L229 MonitoredProcess]: Starting monitored process 4 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) [2025-03-03 11:43:33,667 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 (4)] Waiting until timeout for monitored process [2025-03-03 11:43:33,681 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 7 statements into 2 equivalence classes. [2025-03-03 11:43:34,123 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 7 of 7 statements. [2025-03-03 11:43:34,123 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 11:43:34,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:43:34,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-03 11:43:34,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:43:40,050 WARN L286 SmtUtils]: Spent 5.62s 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) [2025-03-03 11:43:44,125 WARN L873 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) .cse0))) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2025-03-03 11:43:52,323 WARN L286 SmtUtils]: Spent 8.18s 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)