./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i --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/combinations/gcd_4+newton_1_8.i -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 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 15:58:03,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 15:58:03,128 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 15:58:03,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 15:58:03,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 15:58:03,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 15:58:03,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 15:58:03,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 15:58:03,162 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 15:58:03,162 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 15:58:03,163 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 15:58:03,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 15:58:03,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 15:58:03,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 15:58:03,163 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 15:58:03,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 15:58:03,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 15:58:03,163 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 15:58:03,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 15:58:03,163 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 15:58:03,164 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:58:03,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 15:58:03,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 15:58:03,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 15:58:03,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 15:58:03,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 15:58:03,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 15:58:03,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 15:58:03,166 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 -> 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f [2025-03-03 15:58:03,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 15:58:03,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 15:58:03,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 15:58:03,386 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 15:58:03,386 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 15:58:03,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2025-03-03 15:58:04,550 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3140d6b7/20cbeaa737ec44769004252e79428338/FLAG8416f6c07 [2025-03-03 15:58:04,762 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 15:58:04,762 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2025-03-03 15:58:04,789 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3140d6b7/20cbeaa737ec44769004252e79428338/FLAG8416f6c07 [2025-03-03 15:58:05,115 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3140d6b7/20cbeaa737ec44769004252e79428338 [2025-03-03 15:58:05,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 15:58:05,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 15:58:05,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 15:58:05,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 15:58:05,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 15:58:05,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c29319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05, skipping insertion in model container [2025-03-03 15:58:05,124 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,138 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 15:58:05,248 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/combinations/gcd_4+newton_1_8.i[1224,1237] [2025-03-03 15:58:05,272 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/combinations/gcd_4+newton_1_8.i[2806,2819] [2025-03-03 15:58:05,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:58:05,284 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 15:58:05,293 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/combinations/gcd_4+newton_1_8.i[1224,1237] [2025-03-03 15:58:05,303 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/combinations/gcd_4+newton_1_8.i[2806,2819] [2025-03-03 15:58:05,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:58:05,317 INFO L204 MainTranslator]: Completed translation [2025-03-03 15:58:05,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05 WrapperNode [2025-03-03 15:58:05,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 15:58:05,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 15:58:05,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 15:58:05,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 15:58:05,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,332 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,348 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 77 [2025-03-03 15:58:05,351 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 15:58:05,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 15:58:05,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 15:58:05,352 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 15:58:05,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,362 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,370 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-03-03 15:58:05,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,381 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 15:58:05,388 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 15:58:05,392 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 15:58:05,392 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 15:58:05,393 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (1/1) ... [2025-03-03 15:58:05,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:58:05,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:58:05,419 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 15:58:05,421 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 15:58:05,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 15:58:05,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 15:58:05,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 15:58:05,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 15:58:05,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 15:58:05,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-03 15:58:05,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-03 15:58:05,492 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 15:58:05,493 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 15:58:05,630 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-03-03 15:58:05,630 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 15:58:05,636 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 15:58:05,636 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 15:58:05,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:58:05 BoogieIcfgContainer [2025-03-03 15:58:05,636 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 15:58:05,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 15:58:05,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 15:58:05,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 15:58:05,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 03:58:05" (1/3) ... [2025-03-03 15:58:05,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa0648c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:58:05, skipping insertion in model container [2025-03-03 15:58:05,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:05" (2/3) ... [2025-03-03 15:58:05,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa0648c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:58:05, skipping insertion in model container [2025-03-03 15:58:05,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:58:05" (3/3) ... [2025-03-03 15:58:05,644 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_8.i [2025-03-03 15:58:05,658 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 15:58:05,660 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_1_8.i that has 2 procedures, 32 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-03-03 15:58:05,696 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 15:58:05,704 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;@5c11a636, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 15:58:05,705 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-03 15:58:05,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 15:58:05,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-03 15:58:05,715 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:58:05,715 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:58:05,716 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:58:05,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:58:05,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1936904607, now seen corresponding path program 1 times [2025-03-03 15:58:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:58:05,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991051118] [2025-03-03 15:58:05,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:58:05,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:58:05,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-03 15:58:05,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-03 15:58:05,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:58:05,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:58:05,819 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 15:58:05,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 15:58:05,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991051118] [2025-03-03 15:58:05,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991051118] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:58:05,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:58:05,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 15:58:05,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214409062] [2025-03-03 15:58:05,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:58:05,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 15:58:05,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 15:58:05,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 15:58:05,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 15:58:05,840 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:58:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:58:05,849 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2025-03-03 15:58:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 15:58:05,850 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2025-03-03 15:58:05,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:58:05,854 INFO L225 Difference]: With dead ends: 53 [2025-03-03 15:58:05,854 INFO L226 Difference]: Without dead ends: 25 [2025-03-03 15:58:05,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 15:58:05,858 INFO L435 NwaCegarLoop]: 39 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, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:58:05,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:58:05,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-03 15:58:05,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-03-03 15:58:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-03 15:58:05,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2025-03-03 15:58:05,881 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 9 [2025-03-03 15:58:05,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:58:05,881 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2025-03-03 15:58:05,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 15:58:05,882 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2025-03-03 15:58:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-03 15:58:05,882 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:58:05,882 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:58:05,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 15:58:05,883 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:58:05,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:58:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1965533758, now seen corresponding path program 1 times [2025-03-03 15:58:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 15:58:05,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058388043] [2025-03-03 15:58:05,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:58:05,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 15:58:05,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-03 15:58:05,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-03 15:58:05,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:58:05,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 15:58:05,905 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 15:58:05,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-03 15:58:05,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-03 15:58:05,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:58:05,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 15:58:05,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-03 15:58:05,926 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 15:58:05,927 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-03-03 15:58:05,928 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-03-03 15:58:05,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 15:58:05,930 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-03 15:58:05,938 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 15:58:05,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 03:58:05 BoogieIcfgContainer [2025-03-03 15:58:05,942 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 15:58:05,942 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 15:58:05,942 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 15:58:05,942 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 15:58:05,943 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:58:05" (3/4) ... [2025-03-03 15:58:05,944 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-03 15:58:05,945 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 15:58:05,946 INFO L158 Benchmark]: Toolchain (without parser) took 827.62ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 63.1MB in the end (delta: 48.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-03 15:58:05,946 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 122.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 15:58:05,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.09ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 99.8MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 15:58:05,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.99ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 98.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 15:58:05,947 INFO L158 Benchmark]: Boogie Preprocessor took 36.20ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 97.1MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 15:58:05,948 INFO L158 Benchmark]: IcfgBuilder took 248.15ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 84.5MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 15:58:05,948 INFO L158 Benchmark]: TraceAbstraction took 302.97ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 63.6MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-03 15:58:05,948 INFO L158 Benchmark]: Witness Printer took 2.73ms. Allocated memory is still 142.6MB. Free memory was 63.6MB in the beginning and 63.1MB in the end (delta: 478.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 15:58:05,950 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 122.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.09ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 99.8MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.99ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 98.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.20ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 97.1MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 248.15ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 84.5MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 302.97ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 63.6MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.73ms. Allocated memory is still 142.6MB. Free memory was 63.6MB in the beginning and 63.1MB in the end (delta: 478.4kB). 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: 109]: 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 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 87, overapproximation of someBinaryArithmeticFLOAToperation at line 92, overapproximation of someBinaryArithmeticFLOAToperation at line 100. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L82] COND FALSE !(!cond) [L98] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) [L109] reach_error() - 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: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 39 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2025-03-03 15:58:05,962 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/combinations/gcd_4+newton_1_8.i -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 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 15:58:07,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 15:58:07,797 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-03 15:58:07,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 15:58:07,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 15:58:07,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 15:58:07,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 15:58:07,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 15:58:07,822 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 15:58:07,822 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 15:58:07,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 15:58:07,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 15:58:07,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 15:58:07,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-03 15:58:07,823 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-03 15:58:07,825 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 15:58:07,825 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 15:58:07,825 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 15:58:07,826 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 15:58:07,826 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 15:58:07,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 15:58:07,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 15:58:07,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 15:58:07,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:58:07,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 15:58:07,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 15:58:07,827 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 15:58:07,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 15:58:07,827 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-03 15:58:07,827 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-03 15:58:07,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 15:58:07,827 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 15:58:07,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 15:58:07,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 15:58:07,828 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 -> 30996e3a95d093576f36103779b690855817d5b6444d2c5828f5d0db503b2e4f [2025-03-03 15:58:08,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 15:58:08,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 15:58:08,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 15:58:08,075 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 15:58:08,075 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 15:58:08,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2025-03-03 15:58:09,244 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5130bc2f/581a44c4a6be4f4cbf907771f8b19594/FLAG07bc16f87 [2025-03-03 15:58:09,452 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 15:58:09,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_1_8.i [2025-03-03 15:58:09,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5130bc2f/581a44c4a6be4f4cbf907771f8b19594/FLAG07bc16f87 [2025-03-03 15:58:09,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5130bc2f/581a44c4a6be4f4cbf907771f8b19594 [2025-03-03 15:58:09,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 15:58:09,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 15:58:09,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 15:58:09,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 15:58:09,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 15:58:09,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:58:09" (1/1) ... [2025-03-03 15:58:09,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5640bac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:09, skipping insertion in model container [2025-03-03 15:58:09,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 03:58:09" (1/1) ... [2025-03-03 15:58:09,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 15:58:09,947 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/combinations/gcd_4+newton_1_8.i[1224,1237] [2025-03-03 15:58:09,972 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/combinations/gcd_4+newton_1_8.i[2806,2819] [2025-03-03 15:58:09,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:58:09,985 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 15:58:09,996 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/combinations/gcd_4+newton_1_8.i[1224,1237] [2025-03-03 15:58:10,002 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/combinations/gcd_4+newton_1_8.i[2806,2819] [2025-03-03 15:58:10,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 15:58:10,015 INFO L204 MainTranslator]: Completed translation [2025-03-03 15:58:10,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10 WrapperNode [2025-03-03 15:58:10,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 15:58:10,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 15:58:10,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 15:58:10,018 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 15:58:10,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,051 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 74 [2025-03-03 15:58:10,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 15:58:10,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 15:58:10,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 15:58:10,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 15:58:10,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,062 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,070 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-03-03 15:58:10,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,075 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 15:58:10,087 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 15:58:10,088 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 15:58:10,088 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 15:58:10,089 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (1/1) ... [2025-03-03 15:58:10,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 15:58:10,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 15:58:10,113 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 15:58:10,117 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 15:58:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 15:58:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-03 15:58:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-03 15:58:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 15:58:10,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 15:58:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-03 15:58:10,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-03 15:58:10,182 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 15:58:10,183 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 15:58:20,327 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-03-03 15:58:20,327 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 15:58:20,333 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 15:58:20,334 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 15:58:20,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:58:20 BoogieIcfgContainer [2025-03-03 15:58:20,335 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 15:58:20,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 15:58:20,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 15:58:20,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 15:58:20,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 03:58:09" (1/3) ... [2025-03-03 15:58:20,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc08e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:58:20, skipping insertion in model container [2025-03-03 15:58:20,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 03:58:10" (2/3) ... [2025-03-03 15:58:20,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc08e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 03:58:20, skipping insertion in model container [2025-03-03 15:58:20,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:58:20" (3/3) ... [2025-03-03 15:58:20,344 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_8.i [2025-03-03 15:58:20,353 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 15:58:20,354 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_4+newton_1_8.i that has 2 procedures, 32 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-03-03 15:58:20,391 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 15:58:20,399 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;@6bad4ab5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 15:58:20,401 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-03 15:58:20,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 15:58:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-03 15:58:20,408 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:58:20,408 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:58:20,409 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:58:20,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:58:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1936904607, now seen corresponding path program 1 times [2025-03-03 15:58:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 15:58:20,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174223356] [2025-03-03 15:58:20,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:58:20,422 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 15:58:20,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 15:58:20,424 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 15:58:20,426 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 15:58:20,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-03 15:58:21,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-03 15:58:21,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:58:21,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 15:58:21,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 15:58:21,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 15:58:21,338 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 15:58:21,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 15:58:21,339 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 15:58:21,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174223356] [2025-03-03 15:58:21,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174223356] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 15:58:21,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 15:58:21,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 15:58:21,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330811278] [2025-03-03 15:58:21,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 15:58:21,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 15:58:21,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 15:58:21,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 15:58:21,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 15:58:21,359 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 15:58:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 15:58:21,370 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2025-03-03 15:58:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 15:58:21,371 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2025-03-03 15:58:21,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 15:58:21,375 INFO L225 Difference]: With dead ends: 53 [2025-03-03 15:58:21,375 INFO L226 Difference]: Without dead ends: 25 [2025-03-03 15:58:21,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 15:58:21,379 INFO L435 NwaCegarLoop]: 39 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, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 15:58:21,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 15:58:21,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-03 15:58:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-03-03 15:58:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-03 15:58:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2025-03-03 15:58:21,404 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 9 [2025-03-03 15:58:21,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 15:58:21,405 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2025-03-03 15:58:21,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 15:58:21,405 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2025-03-03 15:58:21,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-03 15:58:21,406 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 15:58:21,406 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 15:58:21,432 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 15:58:21,607 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 15:58:21,607 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 15:58:21,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 15:58:21,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1965533758, now seen corresponding path program 1 times [2025-03-03 15:58:21,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 15:58:21,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018136715] [2025-03-03 15:58:21,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 15:58:21,608 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 15:58:21,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 15:58:21,610 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 15:58:21,611 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 15:58:21,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-03 15:58:52,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-03 15:58:52,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:58:52,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 15:58:52,813 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 15:58:52,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-03 15:59:00,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-03 15:59:00,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 15:59:00,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 15:59:00,496 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-03 15:59:00,498 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 15:59:00,499 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-03-03 15:59:00,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-03-03 15:59:00,544 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 15:59:00,704 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 15:59:00,706 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-03 15:59:00,718 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 15:59:00,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 03:59:00 BoogieIcfgContainer [2025-03-03 15:59:00,722 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 15:59:00,722 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 15:59:00,722 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 15:59:00,722 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 15:59:00,723 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 03:58:20" (3/4) ... [2025-03-03 15:59:00,723 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-03 15:59:00,757 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 11. [2025-03-03 15:59:00,805 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-03 15:59:00,805 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-03 15:59:00,805 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 15:59:00,806 INFO L158 Benchmark]: Toolchain (without parser) took 50980.92ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 90.8MB in the end (delta: 2.1MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. [2025-03-03 15:59:00,806 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 15:59:00,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.12ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 80.1MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 15:59:00,807 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.01ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 78.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 15:59:00,807 INFO L158 Benchmark]: Boogie Preprocessor took 29.97ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 77.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 15:59:00,807 INFO L158 Benchmark]: IcfgBuilder took 10247.54ms. Allocated memory is still 117.4MB. Free memory was 77.0MB in the beginning and 63.6MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 15:59:00,807 INFO L158 Benchmark]: TraceAbstraction took 40384.71ms. Allocated memory is still 117.4MB. Free memory was 63.2MB in the beginning and 42.1MB in the end (delta: 21.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-03 15:59:00,807 INFO L158 Benchmark]: Witness Printer took 83.34ms. Allocated memory is still 117.4MB. Free memory was 42.1MB in the beginning and 90.8MB in the end (delta: -48.7MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2025-03-03 15:59:00,809 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.12ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 80.1MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.01ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 78.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.97ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 77.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 10247.54ms. Allocated memory is still 117.4MB. Free memory was 77.0MB in the beginning and 63.6MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 40384.71ms. Allocated memory is still 117.4MB. Free memory was 63.2MB in the beginning and 42.1MB in the end (delta: 21.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 83.34ms. Allocated memory is still 117.4MB. Free memory was 42.1MB in the beginning and 90.8MB in the end (delta: -48.7MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L82] COND FALSE !(!cond) [L98] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\result=-0.6559520363807678] [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\result=0.7552062273025513] [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) [L109] reach_error() - 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: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 40.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 39 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 32.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 36 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2025-03-03 15:59:00,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE