/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_1_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 00:39:59,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 00:39:59,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 00:39:59,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 00:39:59,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 00:39:59,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 00:39:59,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 00:39:59,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 00:39:59,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 00:39:59,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 00:39:59,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 00:39:59,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 00:39:59,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 00:39:59,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 00:39:59,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 00:39:59,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 00:39:59,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 00:39:59,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 00:39:59,515 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 00:39:59,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 00:39:59,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 00:39:59,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 00:39:59,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 00:39:59,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 00:39:59,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 00:39:59,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 00:39:59,518 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 00:39:59,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 00:39:59,519 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 00:39:59,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 00:39:59,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 00:39:59,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 00:39:59,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 00:39:59,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 00:39:59,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 00:39:59,520 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 00:39:59,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 00:39:59,520 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 00:39:59,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 00:39:59,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 00:39:59,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 00:39:59,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 00:39:59,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:39:59,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 00:39:59,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 00:39:59,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 00:39:59,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 00:39:59,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 00:39:59,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 00:39:59,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 00:39:59,522 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 00:39:59,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 00:39:59,522 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 00:39:59,523 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 00:39:59,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 00:39:59,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 00:39:59,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 00:39:59,739 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 00:39:59,740 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 00:39:59,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2023-04-02 00:40:00,920 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 00:40:01,113 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 00:40:01,114 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2023-04-02 00:40:01,121 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c055ad51/a85008c0760549fd8dc30456f1076266/FLAG03a49625f [2023-04-02 00:40:01,141 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c055ad51/a85008c0760549fd8dc30456f1076266 [2023-04-02 00:40:01,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 00:40:01,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 00:40:01,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 00:40:01,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 00:40:01,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 00:40:01,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:40:01" (1/1) ... [2023-04-02 00:40:01,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5883095b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01, skipping insertion in model container [2023-04-02 00:40:01,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:40:01" (1/1) ... [2023-04-02 00:40:01,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 00:40:01,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 00:40:01,306 WARN L247 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_1_2.i[1722,1735] [2023-04-02 00:40:01,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:40:01,322 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 00:40:01,345 WARN L247 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_1_2.i[1722,1735] [2023-04-02 00:40:01,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:40:01,357 INFO L208 MainTranslator]: Completed translation [2023-04-02 00:40:01,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01 WrapperNode [2023-04-02 00:40:01,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 00:40:01,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 00:40:01,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 00:40:01,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 00:40:01,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01" (1/1) ... [2023-04-02 00:40:01,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01" (1/1) ... [2023-04-02 00:40:01,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01" (1/1) ... [2023-04-02 00:40:01,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01" (1/1) ... [2023-04-02 00:40:01,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01" (1/1) ... [2023-04-02 00:40:01,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01" (1/1) ... [2023-04-02 00:40:01,383 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01" (1/1) ... [2023-04-02 00:40:01,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01" (1/1) ... [2023-04-02 00:40:01,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 00:40:01,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 00:40:01,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 00:40:01,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 00:40:01,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01" (1/1) ... [2023-04-02 00:40:01,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:40:01,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:40:01,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 00:40:01,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 00:40:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 00:40:01,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 00:40:01,450 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 00:40:01,450 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 00:40:01,450 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-04-02 00:40:01,450 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-04-02 00:40:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 00:40:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 00:40:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 00:40:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 00:40:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 00:40:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 00:40:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 00:40:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-04-02 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-04-02 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-04-02 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 00:40:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 00:40:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 00:40:01,517 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 00:40:01,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 00:40:01,617 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 00:40:01,622 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 00:40:01,622 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 00:40:01,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:40:01 BoogieIcfgContainer [2023-04-02 00:40:01,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 00:40:01,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 00:40:01,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 00:40:01,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 00:40:01,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 12:40:01" (1/3) ... [2023-04-02 00:40:01,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd1b1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:40:01, skipping insertion in model container [2023-04-02 00:40:01,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:40:01" (2/3) ... [2023-04-02 00:40:01,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd1b1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:40:01, skipping insertion in model container [2023-04-02 00:40:01,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:40:01" (3/3) ... [2023-04-02 00:40:01,641 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_1_2.i [2023-04-02 00:40:01,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 00:40:01,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 00:40:01,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 00:40:01,772 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@33afe0b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 00:40:01,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 00:40:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 00:40:01,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 00:40:01,783 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:40:01,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:40:01,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:40:01,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:40:01,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1142620101, now seen corresponding path program 1 times [2023-04-02 00:40:01,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:40:01,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251499864] [2023-04-02 00:40:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:40:01,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:40:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:40:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:40:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:40:02,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:40:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:40:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-04-02 00:40:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:40:02,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 00:40:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:40:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:40:02,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:40:02,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251499864] [2023-04-02 00:40:02,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251499864] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:40:02,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:40:02,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 00:40:02,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959776225] [2023-04-02 00:40:02,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:40:02,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 00:40:02,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:40:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 00:40:02,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 00:40:02,100 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 00:40:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:40:02,206 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2023-04-02 00:40:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 00:40:02,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2023-04-02 00:40:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:40:02,215 INFO L225 Difference]: With dead ends: 47 [2023-04-02 00:40:02,216 INFO L226 Difference]: Without dead ends: 23 [2023-04-02 00:40:02,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 00:40:02,226 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:40:02,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 00:40:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-04-02 00:40:02,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-04-02 00:40:02,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 00:40:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2023-04-02 00:40:02,286 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 22 [2023-04-02 00:40:02,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:40:02,286 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2023-04-02 00:40:02,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 00:40:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2023-04-02 00:40:02,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 00:40:02,288 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:40:02,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:40:02,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 00:40:02,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:40:02,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:40:02,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2141229945, now seen corresponding path program 1 times [2023-04-02 00:40:02,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:40:02,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394874481] [2023-04-02 00:40:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:40:02,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:40:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 00:40:02,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 00:40:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 00:40:02,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-04-02 00:40:02,378 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 00:40:02,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 00:40:02,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 00:40:02,388 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-02 00:40:02,392 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 00:40:02,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 12:40:02 BoogieIcfgContainer [2023-04-02 00:40:02,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 00:40:02,413 INFO L158 Benchmark]: Toolchain (without parser) took 1268.71ms. Allocated memory was 194.0MB in the beginning and 263.2MB in the end (delta: 69.2MB). Free memory was 133.6MB in the beginning and 200.9MB in the end (delta: -67.2MB). Peak memory consumption was 2.5MB. Max. memory is 8.0GB. [2023-04-02 00:40:02,414 INFO L158 Benchmark]: CDTParser took 0.70ms. Allocated memory is still 194.0MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 00:40:02,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.08ms. Allocated memory is still 194.0MB. Free memory was 133.4MB in the beginning and 123.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 00:40:02,414 INFO L158 Benchmark]: Boogie Preprocessor took 27.37ms. Allocated memory is still 194.0MB. Free memory was 123.1MB in the beginning and 121.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 00:40:02,415 INFO L158 Benchmark]: RCFGBuilder took 238.83ms. Allocated memory is still 194.0MB. Free memory was 121.6MB in the beginning and 111.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 00:40:02,415 INFO L158 Benchmark]: TraceAbstraction took 786.04ms. Allocated memory was 194.0MB in the beginning and 263.2MB in the end (delta: 69.2MB). Free memory was 110.6MB in the beginning and 200.9MB in the end (delta: -90.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 00:40:02,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70ms. Allocated memory is still 194.0MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 211.08ms. Allocated memory is still 194.0MB. Free memory was 133.4MB in the beginning and 123.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.37ms. Allocated memory is still 194.0MB. Free memory was 123.1MB in the beginning and 121.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 238.83ms. Allocated memory is still 194.0MB. Free memory was 121.6MB in the beginning and 111.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 786.04ms. Allocated memory was 194.0MB in the beginning and 263.2MB in the end (delta: 69.2MB). Free memory was 110.6MB in the beginning and 200.9MB in the end (delta: -90.3MB). There was no memory consumed. Max. memory is 8.0GB. * 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 call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 42. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) VAL [\old(cond)=1] [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) VAL [IN=56] [L42] CALL, EXPR f(IN) VAL [\old(x)=56] [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)=56, x=56] [L42] RET, EXPR f(IN) VAL [IN=56, f(IN)=57] [L42] CALL, EXPR fp(IN) VAL [\old(x)=56] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=56, x=56] [L42] RET, EXPR fp(IN) VAL [IN=56, f(IN)=57, fp(IN)=55] [L42] float x = IN - f(IN)/fp(IN); [L50] COND TRUE !(x < 0.1) VAL [IN=56] [L51] reach_error() VAL [IN=56] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 7 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-04-02 00:40:02,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...