./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_1+newton_1_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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_1+newton_1_1.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 665d997b28418647b86f77ef5967346125d0a51a6d916a55f9e5ff0f24d5a61f --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 07:01:03,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 07:01:03,934 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 07:01:03,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 07:01:03,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 07:01:03,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 07:01:03,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 07:01:03,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 07:01:03,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 07:01:03,958 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 07:01:03,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 07:01:03,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 07:01:03,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 07:01:03,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 07:01:03,959 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 07:01:03,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 07:01:03,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 07:01:03,960 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 07:01:03,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 07:01:03,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 07:01:03,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 07:01:03,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 07:01:03,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 07:01:03,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 07:01:03,960 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 07:01:03,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 07:01:03,960 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 07:01:03,960 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 07:01:03,961 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 07:01:03,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 07:01:03,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 07:01:03,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 07:01:03,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:01:03,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 07:01:03,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 07:01:03,962 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 07:01:03,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 07:01:03,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 07:01:03,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 07:01:03,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 07:01:03,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 07:01:03,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 07:01:03,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 07:01:03,962 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 -> 665d997b28418647b86f77ef5967346125d0a51a6d916a55f9e5ff0f24d5a61f [2025-03-08 07:01:04,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 07:01:04,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 07:01:04,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 07:01:04,220 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 07:01:04,221 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 07:01:04,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_1.i [2025-03-08 07:01:05,414 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd6a60bd/8be98ee0a7db45ed80c0051cf236b0a5/FLAG43c7cec0b [2025-03-08 07:01:05,642 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 07:01:05,646 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_1.i [2025-03-08 07:01:05,675 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd6a60bd/8be98ee0a7db45ed80c0051cf236b0a5/FLAG43c7cec0b [2025-03-08 07:01:05,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd6a60bd/8be98ee0a7db45ed80c0051cf236b0a5 [2025-03-08 07:01:05,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 07:01:05,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 07:01:06,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 07:01:06,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 07:01:06,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 07:01:06,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:01:05" (1/1) ... [2025-03-08 07:01:06,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da8056b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06, skipping insertion in model container [2025-03-08 07:01:06,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:01:05" (1/1) ... [2025-03-08 07:01:06,020 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 07:01:06,137 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_1+newton_1_1.i[1226,1239] [2025-03-08 07:01:06,164 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_1+newton_1_1.i[2786,2799] [2025-03-08 07:01:06,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:01:06,174 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 07:01:06,184 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_1+newton_1_1.i[1226,1239] [2025-03-08 07:01:06,197 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_1+newton_1_1.i[2786,2799] [2025-03-08 07:01:06,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:01:06,212 INFO L204 MainTranslator]: Completed translation [2025-03-08 07:01:06,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06 WrapperNode [2025-03-08 07:01:06,214 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 07:01:06,215 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 07:01:06,215 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 07:01:06,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 07:01:06,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,245 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 84 [2025-03-08 07:01:06,248 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 07:01:06,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 07:01:06,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 07:01:06,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 07:01:06,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,275 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]. [2025-03-08 07:01:06,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,281 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 07:01:06,292 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 07:01:06,292 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 07:01:06,292 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 07:01:06,293 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (1/1) ... [2025-03-08 07:01:06,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:01:06,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:01:06,327 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) [2025-03-08 07:01:06,330 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 [2025-03-08 07:01:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 07:01:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 07:01:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 07:01:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 07:01:06,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 07:01:06,400 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 07:01:06,402 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 07:01:06,558 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2025-03-08 07:01:06,558 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 07:01:06,565 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 07:01:06,566 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 07:01:06,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:01:06 BoogieIcfgContainer [2025-03-08 07:01:06,566 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 07:01:06,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 07:01:06,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 07:01:06,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 07:01:06,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:01:05" (1/3) ... [2025-03-08 07:01:06,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c143662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:01:06, skipping insertion in model container [2025-03-08 07:01:06,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:06" (2/3) ... [2025-03-08 07:01:06,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c143662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:01:06, skipping insertion in model container [2025-03-08 07:01:06,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:01:06" (3/3) ... [2025-03-08 07:01:06,573 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_1.i [2025-03-08 07:01:06,583 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 07:01:06,584 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1+newton_1_1.i that has 1 procedures, 26 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-03-08 07:01:06,625 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 07:01:06,635 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;@5e4ed054, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 07:01:06,636 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 07:01:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 23 states have (on average 1.434782608695652) internal successors, (33), 25 states have internal predecessors, (33), 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) [2025-03-08 07:01:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 07:01:06,645 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:01:06,645 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:01:06,645 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:01:06,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:01:06,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1936904607, now seen corresponding path program 1 times [2025-03-08 07:01:06,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:01:06,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326588261] [2025-03-08 07:01:06,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:01:06,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:01:06,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 07:01:06,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 07:01:06,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:01:06,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:01:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:01:06,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:01:06,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326588261] [2025-03-08 07:01:06,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326588261] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:01:06,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:01:06,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 07:01:06,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376462741] [2025-03-08 07:01:06,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:01:06,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 07:01:06,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:01:06,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 07:01:06,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 07:01:06,797 INFO L87 Difference]: Start difference. First operand has 26 states, 23 states have (on average 1.434782608695652) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2025-03-08 07:01:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:01:06,805 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2025-03-08 07:01:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 07:01:06,808 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 [2025-03-08 07:01:06,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:01:06,812 INFO L225 Difference]: With dead ends: 40 [2025-03-08 07:01:06,813 INFO L226 Difference]: Without dead ends: 18 [2025-03-08 07:01:06,816 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 [2025-03-08 07:01:06,818 INFO L435 NwaCegarLoop]: 30 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, 30 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 [2025-03-08 07:01:06,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:01:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-03-08 07:01:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-03-08 07:01:06,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 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) [2025-03-08 07:01:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2025-03-08 07:01:06,843 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2025-03-08 07:01:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:01:06,843 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2025-03-08 07:01:06,844 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) [2025-03-08 07:01:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2025-03-08 07:01:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 07:01:06,844 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:01:06,844 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:01:06,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 07:01:06,845 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:01:06,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:01:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1965533758, now seen corresponding path program 1 times [2025-03-08 07:01:06,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:01:06,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233371420] [2025-03-08 07:01:06,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:01:06,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:01:06,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 07:01:06,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 07:01:06,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:01:06,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 07:01:06,874 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 07:01:06,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 07:01:06,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 07:01:06,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:01:06,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 07:01:06,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 07:01:06,909 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 07:01:06,910 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-03-08 07:01:06,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-03-08 07:01:06,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 07:01:06,916 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-08 07:01:06,927 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 07:01:06,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 07:01:06 BoogieIcfgContainer [2025-03-08 07:01:06,932 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 07:01:06,933 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 07:01:06,934 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 07:01:06,934 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 07:01:06,934 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:01:06" (3/4) ... [2025-03-08 07:01:06,937 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-08 07:01:06,937 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 07:01:06,938 INFO L158 Benchmark]: Toolchain (without parser) took 939.64ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 57.7MB in the end (delta: 48.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-08 07:01:06,939 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 115.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 07:01:06,939 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.76ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 94.7MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 07:01:06,940 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.11ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 93.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 07:01:06,940 INFO L158 Benchmark]: Boogie Preprocessor took 42.73ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 91.2MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 07:01:06,940 INFO L158 Benchmark]: IcfgBuilder took 274.12ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 77.9MB in the end (delta: 13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 07:01:06,941 INFO L158 Benchmark]: TraceAbstraction took 364.44ms. Allocated memory is still 142.6MB. Free memory was 77.0MB in the beginning and 57.7MB in the end (delta: 19.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 07:01:06,941 INFO L158 Benchmark]: Witness Printer took 4.25ms. Allocated memory is still 142.6MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 07:01:06,942 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 115.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.76ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 94.7MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.11ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 93.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.73ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 91.2MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 274.12ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 77.9MB in the end (delta: 13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 364.44ms. Allocated memory is still 142.6MB. Free memory was 77.0MB in the beginning and 57.7MB in the end (delta: 19.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.25ms. Allocated memory is still 142.6MB. Free memory is still 57.7MB. 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: 102]: 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 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93, overapproximation of someBinaryArithmeticFLOAToperation at line 85, overapproximation of someBinaryArithmeticFLOAToperation at line 80. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.2f && IN < 0.2f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -0.2f && IN < 0.2f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) [L102] 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 1 procedures, 26 locations, 33 edges, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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, 30 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, 30 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=26occurred 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 [2025-03-08 07:01:06,958 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 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_1+newton_1_1.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 665d997b28418647b86f77ef5967346125d0a51a6d916a55f9e5ff0f24d5a61f --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 07:01:08,806 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 07:01:08,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-08 07:01:08,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 07:01:08,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 07:01:08,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 07:01:08,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 07:01:08,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 07:01:08,917 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 07:01:08,917 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 07:01:08,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 07:01:08,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 07:01:08,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 07:01:08,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 07:01:08,919 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 07:01:08,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 07:01:08,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 07:01:08,919 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 07:01:08,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 07:01:08,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 07:01:08,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 07:01:08,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 07:01:08,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 07:01:08,920 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 07:01:08,920 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-08 07:01:08,920 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-08 07:01:08,920 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 07:01:08,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 07:01:08,920 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 07:01:08,920 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 07:01:08,921 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 07:01:08,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 07:01:08,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 07:01:08,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 07:01:08,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:01:08,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 07:01:08,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 07:01:08,922 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 07:01:08,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 07:01:08,922 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-08 07:01:08,922 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-08 07:01:08,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 07:01:08,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 07:01:08,923 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 07:01:08,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 07:01:08,923 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 -> 665d997b28418647b86f77ef5967346125d0a51a6d916a55f9e5ff0f24d5a61f [2025-03-08 07:01:09,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 07:01:09,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 07:01:09,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 07:01:09,166 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 07:01:09,166 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 07:01:09,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_1.i [2025-03-08 07:01:10,341 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea4bb25a/0019a2eed3174de980c5f6d7ba5809f3/FLAGe97768253 [2025-03-08 07:01:11,186 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 07:01:11,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_1.i [2025-03-08 07:01:11,197 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea4bb25a/0019a2eed3174de980c5f6d7ba5809f3/FLAGe97768253 [2025-03-08 07:01:11,216 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea4bb25a/0019a2eed3174de980c5f6d7ba5809f3 [2025-03-08 07:01:11,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 07:01:11,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 07:01:11,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 07:01:11,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 07:01:11,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 07:01:11,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d76b499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11, skipping insertion in model container [2025-03-08 07:01:11,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,240 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 07:01:11,356 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_1+newton_1_1.i[1226,1239] [2025-03-08 07:01:11,385 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_1+newton_1_1.i[2786,2799] [2025-03-08 07:01:11,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:01:11,400 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 07:01:11,412 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_1+newton_1_1.i[1226,1239] [2025-03-08 07:01:11,418 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_1+newton_1_1.i[2786,2799] [2025-03-08 07:01:11,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:01:11,438 INFO L204 MainTranslator]: Completed translation [2025-03-08 07:01:11,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11 WrapperNode [2025-03-08 07:01:11,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 07:01:11,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 07:01:11,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 07:01:11,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 07:01:11,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,466 INFO L138 Inliner]: procedures = 28, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 79 [2025-03-08 07:01:11,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 07:01:11,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 07:01:11,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 07:01:11,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 07:01:11,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,475 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,484 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]. [2025-03-08 07:01:11,487 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,494 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 07:01:11,498 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 07:01:11,498 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 07:01:11,498 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 07:01:11,499 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (1/1) ... [2025-03-08 07:01:11,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:01:11,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:01:11,529 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) [2025-03-08 07:01:11,535 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 [2025-03-08 07:01:11,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 07:01:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-08 07:01:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-08 07:01:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 07:01:11,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 07:01:11,617 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 07:01:11,619 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 07:01:22,373 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2025-03-08 07:01:22,374 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 07:01:22,380 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 07:01:22,380 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 07:01:22,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:01:22 BoogieIcfgContainer [2025-03-08 07:01:22,381 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 07:01:22,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 07:01:22,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 07:01:22,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 07:01:22,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:01:11" (1/3) ... [2025-03-08 07:01:22,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d38ed79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:01:22, skipping insertion in model container [2025-03-08 07:01:22,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:01:11" (2/3) ... [2025-03-08 07:01:22,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d38ed79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:01:22, skipping insertion in model container [2025-03-08 07:01:22,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:01:22" (3/3) ... [2025-03-08 07:01:22,389 INFO L128 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_1.i [2025-03-08 07:01:22,400 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 07:01:22,402 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gcd_1+newton_1_1.i that has 1 procedures, 26 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-03-08 07:01:22,435 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 07:01:22,447 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;@4fb07642, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 07:01:22,447 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 07:01:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 23 states have (on average 1.434782608695652) internal successors, (33), 25 states have internal predecessors, (33), 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) [2025-03-08 07:01:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 07:01:22,454 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:01:22,454 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:01:22,454 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:01:22,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:01:22,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1936904607, now seen corresponding path program 1 times [2025-03-08 07:01:22,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 07:01:22,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741894588] [2025-03-08 07:01:22,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:01:22,466 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 [2025-03-08 07:01:22,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-08 07:01:22,469 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) [2025-03-08 07:01:22,471 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 [2025-03-08 07:01:22,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 07:01:23,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 07:01:23,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:01:23,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:01:23,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 07:01:23,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 07:01:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:01:23,430 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 07:01:23,430 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 07:01:23,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741894588] [2025-03-08 07:01:23,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741894588] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:01:23,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:01:23,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 07:01:23,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451028338] [2025-03-08 07:01:23,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:01:23,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 07:01:23,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 07:01:23,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 07:01:23,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 07:01:23,447 INFO L87 Difference]: Start difference. First operand has 26 states, 23 states have (on average 1.434782608695652) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2025-03-08 07:01:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:01:23,455 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2025-03-08 07:01:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 07:01:23,456 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 [2025-03-08 07:01:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:01:23,460 INFO L225 Difference]: With dead ends: 40 [2025-03-08 07:01:23,460 INFO L226 Difference]: Without dead ends: 18 [2025-03-08 07:01:23,462 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 [2025-03-08 07:01:23,463 INFO L435 NwaCegarLoop]: 30 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, 30 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 [2025-03-08 07:01:23,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 07:01:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-03-08 07:01:23,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-03-08 07:01:23,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 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) [2025-03-08 07:01:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2025-03-08 07:01:23,489 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2025-03-08 07:01:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:01:23,490 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2025-03-08 07:01:23,490 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) [2025-03-08 07:01:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2025-03-08 07:01:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 07:01:23,491 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:01:23,491 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:01:23,520 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 [2025-03-08 07:01:23,692 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 [2025-03-08 07:01:23,692 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:01:23,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:01:23,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1965533758, now seen corresponding path program 1 times [2025-03-08 07:01:23,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 07:01:23,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336452775] [2025-03-08 07:01:23,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:01:23,694 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 [2025-03-08 07:01:23,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-08 07:01:23,696 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) [2025-03-08 07:01:23,698 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 [2025-03-08 07:01:23,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes.