./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd1fbff4a3c3c5ec96d6304a0f1ce261a19e0a6955e4877484b605d93c4e6183 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 17:59:55,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 17:59:55,988 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 17:59:55,994 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 17:59:55,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 17:59:56,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 17:59:56,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 17:59:56,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 17:59:56,026 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 17:59:56,027 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 17:59:56,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 17:59:56,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 17:59:56,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 17:59:56,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 17:59:56,028 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 17:59:56,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 17:59:56,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 17:59:56,029 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 17:59:56,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 17:59:56,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 17:59:56,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 17:59:56,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 17:59:56,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 17:59:56,030 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 17:59:56,030 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 17:59:56,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 17:59:56,030 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 17:59:56,030 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 17:59:56,031 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 17:59:56,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 17:59:56,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 17:59:56,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 17:59:56,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:59:56,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 17:59:56,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 17:59:56,032 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 17:59:56,032 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 17:59:56,032 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 17:59:56,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 17:59:56,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 17:59:56,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 17:59:56,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 17:59:56,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 17:59:56,033 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd1fbff4a3c3c5ec96d6304a0f1ce261a19e0a6955e4877484b605d93c4e6183 [2025-02-05 17:59:56,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 17:59:56,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 17:59:56,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 17:59:56,303 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 17:59:56,303 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 17:59:56,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c [2025-02-05 17:59:57,534 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/539908622/e83b0b1952204897a2748e6d0017c95f/FLAGa1cce246d [2025-02-05 17:59:57,816 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 17:59:57,821 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c [2025-02-05 17:59:57,839 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/539908622/e83b0b1952204897a2748e6d0017c95f/FLAGa1cce246d [2025-02-05 17:59:58,098 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/539908622/e83b0b1952204897a2748e6d0017c95f [2025-02-05 17:59:58,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 17:59:58,102 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 17:59:58,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 17:59:58,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 17:59:58,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 17:59:58,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c994cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58, skipping insertion in model container [2025-02-05 17:59:58,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 17:59:58,275 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[1998,2011] [2025-02-05 17:59:58,281 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[2392,2405] [2025-02-05 17:59:58,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:59:58,349 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 17:59:58,364 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[1998,2011] [2025-02-05 17:59:58,367 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[2392,2405] [2025-02-05 17:59:58,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:59:58,428 INFO L204 MainTranslator]: Completed translation [2025-02-05 17:59:58,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58 WrapperNode [2025-02-05 17:59:58,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 17:59:58,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 17:59:58,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 17:59:58,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 17:59:58,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,470 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 211 [2025-02-05 17:59:58,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 17:59:58,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 17:59:58,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 17:59:58,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 17:59:58,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,492 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-05 17:59:58,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,498 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 17:59:58,503 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 17:59:58,503 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 17:59:58,504 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 17:59:58,504 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (1/1) ... [2025-02-05 17:59:58,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:59:58,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:59:58,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 17:59:58,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 17:59:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 17:59:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2025-02-05 17:59:58,552 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2025-02-05 17:59:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 17:59:58,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 17:59:58,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 17:59:58,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-05 17:59:58,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-05 17:59:58,630 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 17:59:58,632 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 17:59:59,039 INFO L? ?]: Removed 82 outVars from TransFormulas that were not future-live. [2025-02-05 17:59:59,039 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 17:59:59,064 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 17:59:59,064 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-05 17:59:59,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:59:59 BoogieIcfgContainer [2025-02-05 17:59:59,065 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 17:59:59,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 17:59:59,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 17:59:59,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 17:59:59,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 05:59:58" (1/3) ... [2025-02-05 17:59:59,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1755e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:59:59, skipping insertion in model container [2025-02-05 17:59:59,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:59:58" (2/3) ... [2025-02-05 17:59:59,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1755e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:59:59, skipping insertion in model container [2025-02-05 17:59:59,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:59:59" (3/3) ... [2025-02-05 17:59:59,075 INFO L128 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-2a.c.cil.c [2025-02-05 17:59:59,093 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 17:59:59,095 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_5+soft_float_1-2a.c.cil.c that has 3 procedures, 106 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-05 17:59:59,154 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 17:59:59,168 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;@3c0f2b35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 17:59:59,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-05 17:59:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 92 states have (on average 1.5543478260869565) internal successors, (143), 97 states have internal predecessors, (143), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-05 17:59:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-05 17:59:59,176 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:59:59,177 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:59:59,177 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:59:59,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:59:59,182 INFO L85 PathProgramCache]: Analyzing trace with hash 425753875, now seen corresponding path program 1 times [2025-02-05 17:59:59,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:59:59,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756815968] [2025-02-05 17:59:59,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:59:59,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:59:59,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-05 17:59:59,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-05 17:59:59,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:59:59,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:59:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:59:59,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:59:59,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756815968] [2025-02-05 17:59:59,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756815968] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:59:59,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:59:59,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 17:59:59,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122446658] [2025-02-05 17:59:59,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:59:59,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 17:59:59,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:59:59,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 17:59:59,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 17:59:59,307 INFO L87 Difference]: Start difference. First operand has 106 states, 92 states have (on average 1.5543478260869565) internal successors, (143), 97 states have internal predecessors, (143), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:59:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:59:59,349 INFO L93 Difference]: Finished difference Result 207 states and 318 transitions. [2025-02-05 17:59:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 17:59:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) Word has length 7 [2025-02-05 17:59:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:59:59,357 INFO L225 Difference]: With dead ends: 207 [2025-02-05 17:59:59,357 INFO L226 Difference]: Without dead ends: 98 [2025-02-05 17:59:59,360 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 [2025-02-05 17:59:59,362 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:59:59,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:59:59,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-02-05 17:59:59,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2025-02-05 17:59:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 89 states have internal predecessors, (126), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-05 17:59:59,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 141 transitions. [2025-02-05 17:59:59,400 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 141 transitions. Word has length 7 [2025-02-05 17:59:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:59:59,400 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 141 transitions. [2025-02-05 17:59:59,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 17:59:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 141 transitions. [2025-02-05 17:59:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-05 17:59:59,401 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:59:59,401 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:59:59,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 17:59:59,401 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:59:59,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:59:59,403 INFO L85 PathProgramCache]: Analyzing trace with hash 425783666, now seen corresponding path program 1 times [2025-02-05 17:59:59,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:59:59,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790315659] [2025-02-05 17:59:59,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:59:59,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:59:59,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-05 17:59:59,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-05 17:59:59,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:59:59,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 17:59:59,416 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-05 17:59:59,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-05 17:59:59,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-05 17:59:59,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:59:59,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 17:59:59,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-05 17:59:59,440 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-05 17:59:59,441 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-02-05 17:59:59,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-02-05 17:59:59,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 17:59:59,445 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-05 17:59:59,454 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 17:59:59,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 05:59:59 BoogieIcfgContainer [2025-02-05 17:59:59,456 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 17:59:59,457 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 17:59:59,457 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 17:59:59,457 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 17:59:59,458 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:59:59" (3/4) ... [2025-02-05 17:59:59,459 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-05 17:59:59,460 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 17:59:59,461 INFO L158 Benchmark]: Toolchain (without parser) took 1358.82ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 37.7MB in the end (delta: 67.6MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-02-05 17:59:59,461 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 124.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 17:59:59,461 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.10ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 90.1MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-05 17:59:59,461 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.83ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 88.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 17:59:59,461 INFO L158 Benchmark]: Boogie Preprocessor took 31.67ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 86.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 17:59:59,462 INFO L158 Benchmark]: IcfgBuilder took 561.56ms. Allocated memory is still 142.6MB. Free memory was 86.0MB in the beginning and 60.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-05 17:59:59,463 INFO L158 Benchmark]: TraceAbstraction took 389.30ms. Allocated memory is still 142.6MB. Free memory was 59.8MB in the beginning and 37.7MB in the end (delta: 22.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-05 17:59:59,463 INFO L158 Benchmark]: Witness Printer took 3.09ms. Allocated memory is still 142.6MB. Free memory is still 37.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 17:59:59,464 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 124.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.10ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 90.1MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.83ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 88.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.67ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 86.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 561.56ms. Allocated memory is still 142.6MB. Free memory was 86.0MB in the beginning and 60.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 389.30ms. Allocated memory is still 142.6MB. Free memory was 59.8MB in the beginning and 37.7MB in the end (delta: 22.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.09ms. Allocated memory is still 142.6MB. Free memory is still 37.7MB. 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: 48]: 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 40, overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.3985f) [L48] reach_error() - UnprovableResult [Line: 61]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 106 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 144 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 144 mSDtfsCounter, 7 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=106occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-05 17:59:59,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd1fbff4a3c3c5ec96d6304a0f1ce261a19e0a6955e4877484b605d93c4e6183 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 18:00:01,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 18:00:01,734 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-02-05 18:00:01,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 18:00:01,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 18:00:01,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 18:00:01,787 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 18:00:01,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 18:00:01,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 18:00:01,789 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 18:00:01,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 18:00:01,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 18:00:01,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 18:00:01,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 18:00:01,789 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 18:00:01,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 18:00:01,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 18:00:01,790 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 18:00:01,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 18:00:01,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 18:00:01,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 18:00:01,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 18:00:01,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 18:00:01,790 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-05 18:00:01,790 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-05 18:00:01,790 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-05 18:00:01,790 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 18:00:01,790 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 18:00:01,792 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 18:00:01,792 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 18:00:01,792 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 18:00:01,792 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 18:00:01,793 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 18:00:01,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 18:00:01,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 18:00:01,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 18:00:01,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 18:00:01,793 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 18:00:01,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 18:00:01,794 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-05 18:00:01,794 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-05 18:00:01,794 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 18:00:01,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 18:00:01,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 18:00:01,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 18:00:01,794 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd1fbff4a3c3c5ec96d6304a0f1ce261a19e0a6955e4877484b605d93c4e6183 [2025-02-05 18:00:02,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 18:00:02,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 18:00:02,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 18:00:02,114 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 18:00:02,114 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 18:00:02,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c [2025-02-05 18:00:03,423 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dfaf23bb2/ab52149e87544e45837a22f2657b1e70/FLAGa0da50d96 [2025-02-05 18:00:03,691 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 18:00:03,693 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c [2025-02-05 18:00:03,706 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dfaf23bb2/ab52149e87544e45837a22f2657b1e70/FLAGa0da50d96 [2025-02-05 18:00:03,989 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dfaf23bb2/ab52149e87544e45837a22f2657b1e70 [2025-02-05 18:00:03,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 18:00:03,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 18:00:03,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 18:00:03,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 18:00:04,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 18:00:04,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 06:00:03" (1/1) ... [2025-02-05 18:00:04,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae1710c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04, skipping insertion in model container [2025-02-05 18:00:04,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 06:00:03" (1/1) ... [2025-02-05 18:00:04,019 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 18:00:04,170 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[1998,2011] [2025-02-05 18:00:04,176 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[2392,2405] [2025-02-05 18:00:04,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 18:00:04,277 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 18:00:04,294 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[1998,2011] [2025-02-05 18:00:04,296 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_1-2a.c.cil.c[2392,2405] [2025-02-05 18:00:04,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 18:00:04,363 INFO L204 MainTranslator]: Completed translation [2025-02-05 18:00:04,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04 WrapperNode [2025-02-05 18:00:04,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 18:00:04,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 18:00:04,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 18:00:04,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 18:00:04,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,418 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2025-02-05 18:00:04,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 18:00:04,419 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 18:00:04,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 18:00:04,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 18:00:04,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,460 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-05 18:00:04,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,473 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 18:00:04,493 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 18:00:04,493 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 18:00:04,494 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 18:00:04,495 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (1/1) ... [2025-02-05 18:00:04,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 18:00:04,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 18:00:04,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 18:00:04,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 18:00:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 18:00:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-05 18:00:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2025-02-05 18:00:04,562 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2025-02-05 18:00:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 18:00:04,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 18:00:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-05 18:00:04,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-05 18:00:04,630 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 18:00:04,631 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 18:00:09,620 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2025-02-05 18:00:09,621 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 18:00:09,633 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 18:00:09,633 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 18:00:09,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 06:00:09 BoogieIcfgContainer [2025-02-05 18:00:09,634 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 18:00:09,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 18:00:09,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 18:00:09,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 18:00:09,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 06:00:03" (1/3) ... [2025-02-05 18:00:09,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfaab72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 06:00:09, skipping insertion in model container [2025-02-05 18:00:09,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 06:00:04" (2/3) ... [2025-02-05 18:00:09,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfaab72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 06:00:09, skipping insertion in model container [2025-02-05 18:00:09,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 06:00:09" (3/3) ... [2025-02-05 18:00:09,646 INFO L128 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-2a.c.cil.c [2025-02-05 18:00:09,656 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 18:00:09,657 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_5+soft_float_1-2a.c.cil.c that has 3 procedures, 82 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-05 18:00:09,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 18:00:09,715 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;@18b8bfdb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 18:00:09,716 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-05 18:00:09,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 73 states have internal predecessors, (106), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-05 18:00:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-05 18:00:09,725 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 18:00:09,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-05 18:00:09,725 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 18:00:09,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 18:00:09,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1241791034, now seen corresponding path program 1 times [2025-02-05 18:00:09,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 18:00:09,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648316163] [2025-02-05 18:00:09,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 18:00:09,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-05 18:00:09,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 18:00:09,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-05 18:00:09,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2025-02-05 18:00:09,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-05 18:00:10,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-05 18:00:10,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 18:00:10,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 18:00:10,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 18:00:10,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 18:00:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 18:00:10,197 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 18:00:10,197 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-05 18:00:10,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648316163] [2025-02-05 18:00:10,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648316163] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 18:00:10,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 18:00:10,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 18:00:10,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092146312] [2025-02-05 18:00:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 18:00:10,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 18:00:10,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-05 18:00:10,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 18:00:10,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 18:00:10,220 INFO L87 Difference]: Start difference. First operand has 82 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 73 states have internal predecessors, (106), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 18:00:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 18:00:10,242 INFO L93 Difference]: Finished difference Result 159 states and 244 transitions. [2025-02-05 18:00:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 18:00:10,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) Word has length 7 [2025-02-05 18:00:10,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 18:00:10,251 INFO L225 Difference]: With dead ends: 159 [2025-02-05 18:00:10,251 INFO L226 Difference]: Without dead ends: 74 [2025-02-05 18:00:10,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 18:00:10,258 INFO L435 NwaCegarLoop]: 116 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, 116 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 [2025-02-05 18:00:10,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 18:00:10,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-02-05 18:00:10,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2025-02-05 18:00:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.467741935483871) internal successors, (91), 65 states have internal predecessors, (91), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-05 18:00:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 106 transitions. [2025-02-05 18:00:10,311 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 106 transitions. Word has length 7 [2025-02-05 18:00:10,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 18:00:10,311 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 106 transitions. [2025-02-05 18:00:10,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 18:00:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 106 transitions. [2025-02-05 18:00:10,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-05 18:00:10,312 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 18:00:10,312 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-05 18:00:10,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2025-02-05 18:00:10,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-05 18:00:10,513 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 18:00:10,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 18:00:10,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1241761243, now seen corresponding path program 1 times [2025-02-05 18:00:10,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 18:00:10,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220470758] [2025-02-05 18:00:10,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 18:00:10,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-05 18:00:10,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 18:00:10,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-05 18:00:10,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2025-02-05 18:00:10,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes.