./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.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 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:59:07,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:59:07,401 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:59:07,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:59:07,406 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:59:07,433 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:59:07,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:59:07,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:59:07,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:59:07,436 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:59:07,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:59:07,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:59:07,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:59:07,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:59:07,438 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:59:07,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:59:07,440 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:59:07,440 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:59:07,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:59:07,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:59:07,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:59:07,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:59:07,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:59:07,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:59:07,443 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:59:07,443 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:59:07,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:59:07,444 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:59:07,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:59:07,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:59:07,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:59:07,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:59:07,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:59:07,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:59:07,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:59:07,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:59:07,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:59:07,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:59:07,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:59:07,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:59:07,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:59:07,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:59:07,447 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 [2024-11-19 18:59:07,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:59:07,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:59:07,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:59:07,681 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:59:07,681 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:59:07,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2024-11-19 18:59:08,968 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:59:09,166 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:59:09,167 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2024-11-19 18:59:09,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f402f5c/d0a24e15bc2a4b34a25fbeb03991c811/FLAGc37487f2c [2024-11-19 18:59:09,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f402f5c/d0a24e15bc2a4b34a25fbeb03991c811 [2024-11-19 18:59:09,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:59:09,195 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:59:09,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:59:09,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:59:09,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:59:09,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3205e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09, skipping insertion in model container [2024-11-19 18:59:09,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,234 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:59:09,389 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1743,1756] [2024-11-19 18:59:09,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:59:09,402 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:59:09,418 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/floats-cdfpl/newton_2_5.i[1743,1756] [2024-11-19 18:59:09,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:59:09,431 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:59:09,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09 WrapperNode [2024-11-19 18:59:09,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:59:09,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:59:09,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:59:09,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:59:09,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,457 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2024-11-19 18:59:09,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:59:09,458 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:59:09,459 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:59:09,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:59:09,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,467 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,475 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 18:59:09,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:59:09,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:59:09,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:59:09,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:59:09,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (1/1) ... [2024-11-19 18:59:09,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:59:09,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:59:09,509 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) [2024-11-19 18:59:09,511 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 [2024-11-19 18:59:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:59:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-19 18:59:09,545 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-19 18:59:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-19 18:59:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-19 18:59:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:59:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:59:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:59:09,591 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:59:09,592 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:59:09,729 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-19 18:59:09,729 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:59:09,745 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:59:09,745 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 18:59:09,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:59:09 BoogieIcfgContainer [2024-11-19 18:59:09,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:59:09,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:59:09,756 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:59:09,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:59:09,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:59:09" (1/3) ... [2024-11-19 18:59:09,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7bf2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:59:09, skipping insertion in model container [2024-11-19 18:59:09,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:09" (2/3) ... [2024-11-19 18:59:09,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7bf2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:59:09, skipping insertion in model container [2024-11-19 18:59:09,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:59:09" (3/3) ... [2024-11-19 18:59:09,765 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_2_5.i [2024-11-19 18:59:09,779 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:59:09,779 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:59:09,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:59:09,834 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;@47ef9d2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:59:09,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:59:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 18:59:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 18:59:09,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:59:09,846 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:59:09,847 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:59:09,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:59:09,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2024-11-19 18:59:09,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:59:09,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32813339] [2024-11-19 18:59:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:59:09,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:59:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:59:09,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 18:59:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:59:09,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 18:59:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:59:09,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-19 18:59:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:59:09,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-19 18:59:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:59:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 18:59:10,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:59:10,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32813339] [2024-11-19 18:59:10,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32813339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:59:10,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:59:10,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:59:10,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239467992] [2024-11-19 18:59:10,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:59:10,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 18:59:10,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:59:10,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 18:59:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 18:59:10,029 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 18:59:10,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:59:10,042 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-11-19 18:59:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 18:59:10,044 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2024-11-19 18:59:10,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:59:10,048 INFO L225 Difference]: With dead ends: 43 [2024-11-19 18:59:10,049 INFO L226 Difference]: Without dead ends: 19 [2024-11-19 18:59:10,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 18:59:10,053 INFO L432 NwaCegarLoop]: 24 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, 24 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 [2024-11-19 18:59:10,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 18:59:10,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-19 18:59:10,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-19 18:59:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 18:59:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-19 18:59:10,080 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2024-11-19 18:59:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:59:10,080 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-19 18:59:10,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 18:59:10,081 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-19 18:59:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 18:59:10,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:59:10,082 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:59:10,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:59:10,082 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:59:10,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:59:10,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2024-11-19 18:59:10,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:59:10,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957208340] [2024-11-19 18:59:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:59:10,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:59:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 18:59:10,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 18:59:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 18:59:10,134 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 18:59:10,134 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 18:59:10,136 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-19 18:59:10,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:59:10,139 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 18:59:10,153 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 18:59:10,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:59:10 BoogieIcfgContainer [2024-11-19 18:59:10,156 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 18:59:10,156 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 18:59:10,157 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 18:59:10,157 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 18:59:10,157 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:59:09" (3/4) ... [2024-11-19 18:59:10,159 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-19 18:59:10,161 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 18:59:10,162 INFO L158 Benchmark]: Toolchain (without parser) took 966.73ms. Allocated memory is still 169.9MB. Free memory was 138.1MB in the beginning and 109.0MB in the end (delta: 29.2MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2024-11-19 18:59:10,163 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 18:59:10,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.37ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 130.6MB in the end (delta: 7.3MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2024-11-19 18:59:10,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.23ms. Allocated memory is still 169.9MB. Free memory was 130.6MB in the beginning and 129.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 18:59:10,165 INFO L158 Benchmark]: Boogie Preprocessor took 22.58ms. Allocated memory is still 169.9MB. Free memory was 129.4MB in the beginning and 127.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 18:59:10,165 INFO L158 Benchmark]: RCFGBuilder took 268.04ms. Allocated memory is still 169.9MB. Free memory was 127.3MB in the beginning and 136.2MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-19 18:59:10,166 INFO L158 Benchmark]: TraceAbstraction took 399.96ms. Allocated memory is still 169.9MB. Free memory was 135.3MB in the beginning and 109.9MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-19 18:59:10,168 INFO L158 Benchmark]: Witness Printer took 4.83ms. Allocated memory is still 169.9MB. Free memory is still 109.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 18:59:10,169 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.37ms. Allocated memory is still 169.9MB. Free memory was 137.9MB in the beginning and 130.6MB in the end (delta: 7.3MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.23ms. Allocated memory is still 169.9MB. Free memory was 130.6MB in the beginning and 129.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.58ms. Allocated memory is still 169.9MB. Free memory was 129.4MB in the beginning and 127.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 268.04ms. Allocated memory is still 169.9MB. Free memory was 127.3MB in the beginning and 136.2MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 399.96ms. Allocated memory is still 169.9MB. Free memory was 135.3MB in the beginning and 109.9MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.83ms. Allocated memory is still 169.9MB. Free memory is still 109.0MB. 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: 51]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L42] CALL, EXPR f(IN) VAL [\old(x)=53] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=53] [L42] RET, EXPR f(IN) VAL [IN=53] [L42] CALL, EXPR fp(IN) VAL [\old(x)=53] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=53] [L42] RET, EXPR fp(IN) VAL [IN=53] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=54] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=54] [L44] RET, EXPR f(x) VAL [IN=53, x=54] [L44] CALL, EXPR fp(x) VAL [\old(x)=54] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=54] [L44] RET, EXPR fp(x) VAL [IN=53, x=54] [L44] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=53] [L51] reach_error() VAL [IN=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 24 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, 24 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-19 18:59:10,187 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/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.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 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:59:12,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:59:12,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-19 18:59:12,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:59:12,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:59:12,428 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:59:12,431 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:59:12,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:59:12,432 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:59:12,432 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:59:12,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:59:12,433 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:59:12,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:59:12,434 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:59:12,434 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:59:12,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:59:12,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:59:12,435 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:59:12,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:59:12,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:59:12,435 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:59:12,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:59:12,441 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:59:12,441 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 18:59:12,441 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-19 18:59:12,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:59:12,441 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-19 18:59:12,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:59:12,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:59:12,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:59:12,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:59:12,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:59:12,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:59:12,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:59:12,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:59:12,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:59:12,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:59:12,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:59:12,443 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-19 18:59:12,443 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-19 18:59:12,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:59:12,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:59:12,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:59:12,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:59:12,444 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 [2024-11-19 18:59:12,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:59:12,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:59:12,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:59:12,759 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:59:12,759 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:59:12,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2024-11-19 18:59:14,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:59:14,223 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:59:14,224 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2024-11-19 18:59:14,230 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8291870d5/6286546a77414619a7a2e164d245f664/FLAG291ee2b6f [2024-11-19 18:59:14,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8291870d5/6286546a77414619a7a2e164d245f664 [2024-11-19 18:59:14,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:59:14,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:59:14,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:59:14,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:59:14,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:59:14,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373025ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14, skipping insertion in model container [2024-11-19 18:59:14,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,666 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:59:14,826 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1743,1756] [2024-11-19 18:59:14,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:59:14,843 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:59:14,860 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1743,1756] [2024-11-19 18:59:14,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:59:14,879 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:59:14,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14 WrapperNode [2024-11-19 18:59:14,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:59:14,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:59:14,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:59:14,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:59:14,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,909 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2024-11-19 18:59:14,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:59:14,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:59:14,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:59:14,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:59:14,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,945 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 18:59:14,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:59:14,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:59:14,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:59:14,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:59:14,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (1/1) ... [2024-11-19 18:59:14,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:59:14,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:59:14,999 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) [2024-11-19 18:59:15,002 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 [2024-11-19 18:59:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:59:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-19 18:59:15,039 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-19 18:59:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-19 18:59:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-19 18:59:15,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-19 18:59:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:59:15,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:59:15,098 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:59:15,101 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:59:26,039 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-19 18:59:26,039 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:59:26,048 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:59:26,049 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 18:59:26,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:59:26 BoogieIcfgContainer [2024-11-19 18:59:26,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:59:26,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:59:26,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:59:26,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:59:26,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:59:14" (1/3) ... [2024-11-19 18:59:26,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cb57eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:59:26, skipping insertion in model container [2024-11-19 18:59:26,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:14" (2/3) ... [2024-11-19 18:59:26,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cb57eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:59:26, skipping insertion in model container [2024-11-19 18:59:26,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:59:26" (3/3) ... [2024-11-19 18:59:26,059 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_2_5.i [2024-11-19 18:59:26,084 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:59:26,088 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:59:26,146 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:59:26,160 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;@5286463c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:59:26,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:59:26,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 18:59:26,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 18:59:26,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:59:26,171 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:59:26,171 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:59:26,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:59:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2024-11-19 18:59:26,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 18:59:26,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727099472] [2024-11-19 18:59:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:59:26,191 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 [2024-11-19 18:59:26,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 18:59:26,195 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) [2024-11-19 18:59:26,203 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 [2024-11-19 18:59:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:59:28,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 18:59:28,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:59:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 18:59:28,047 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:59:28,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-19 18:59:28,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727099472] [2024-11-19 18:59:28,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727099472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:59:28,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:59:28,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:59:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131203290] [2024-11-19 18:59:28,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:59:28,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 18:59:28,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-19 18:59:28,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 18:59:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 18:59:28,093 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 18:59:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:59:28,117 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-11-19 18:59:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 18:59:28,120 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2024-11-19 18:59:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:59:28,126 INFO L225 Difference]: With dead ends: 43 [2024-11-19 18:59:28,127 INFO L226 Difference]: Without dead ends: 19 [2024-11-19 18:59:28,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 18:59:28,133 INFO L432 NwaCegarLoop]: 24 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, 24 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 [2024-11-19 18:59:28,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 18:59:28,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-19 18:59:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-19 18:59:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 18:59:28,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-19 18:59:28,166 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2024-11-19 18:59:28,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:59:28,167 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-19 18:59:28,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 18:59:28,167 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-19 18:59:28,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 18:59:28,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:59:28,170 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:59:28,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-19 18:59:28,373 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 [2024-11-19 18:59:28,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:59:28,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:59:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2024-11-19 18:59:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-19 18:59:28,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084462186] [2024-11-19 18:59:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:59:28,378 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 [2024-11-19 18:59:28,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-19 18:59:28,381 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) [2024-11-19 18:59:28,382 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