/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/floats-cdfpl/newton_1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:50:19,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:50:19,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:50:19,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 22:50:19,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 22:50:19,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 22:50:19,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 22:50:19,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 22:50:19,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 22:50:19,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 22:50:19,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 22:50:19,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 22:50:19,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:50:19,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:50:19,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:50:19,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:50:19,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:50:19,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:50:19,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:50:19,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:50:19,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:50:19,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:50:19,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:50:19,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:50:19,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 22:50:19,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 22:50:19,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 22:50:19,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 22:50:19,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 22:50:19,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 22:50:19,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 22:50:19,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 22:50:19,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 22:50:19,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 22:50:19,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 22:50:19,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 22:50:19,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 22:50:19,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 22:50:19,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:50:19,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:50:19,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:50:19,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 22:50:19,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:50:19,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:50:19,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:50:19,426 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:50:19,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:50:19,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:50:19,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:50:19,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:50:19,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:50:19,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:50:19,428 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:50:19,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:50:19,428 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:50:19,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:50:19,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:50:19,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:50:19,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:50:19,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:50:19,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:50:19,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:50:19,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:50:19,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:50:19,429 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:50:19,429 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:50:19,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:50:19,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:50:19,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:50:19,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:50:19,629 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:50:19,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/newton_1_3.i [2022-01-31 22:50:19,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85d2b63be/fbddffb7174d401e9cb187e00cc0702c/FLAG7f745f240 [2022-01-31 22:50:20,046 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:50:20,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_3.i [2022-01-31 22:50:20,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85d2b63be/fbddffb7174d401e9cb187e00cc0702c/FLAG7f745f240 [2022-01-31 22:50:20,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85d2b63be/fbddffb7174d401e9cb187e00cc0702c [2022-01-31 22:50:20,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:50:20,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:50:20,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:50:20,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:50:20,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:50:20,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:50:20" (1/1) ... [2022-01-31 22:50:20,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0a1bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:50:20, skipping insertion in model container [2022-01-31 22:50:20,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:50:20" (1/1) ... [2022-01-31 22:50:20,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:50:20,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:50:20,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_3.i[1722,1735] [2022-01-31 22:50:20,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:50:20,291 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:50:20,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_3.i[1722,1735] [2022-01-31 22:50:20,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:50:20,322 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:50:20,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:50:20 WrapperNode [2022-01-31 22:50:20,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:50:20,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:50:20,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:50:20,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:50:20,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:50:20" (1/1) ... [2022-01-31 22:50:20,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:50:20" (1/1) ... [2022-01-31 22:50:20,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:50:20" (1/1) ... [2022-01-31 22:50:20,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:50:20" (1/1) ... [2022-01-31 22:50:20,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:50:20" (1/1) ... [2022-01-31 22:50:20,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:50:20" (1/1) ... [2022-01-31 22:50:20,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:50:20" (1/1) ... [2022-01-31 22:50:20,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:50:20,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:50:20,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:50:20,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:50:20,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:50:20" (1/1) ... [2022-01-31 22:50:20,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:50:20,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:50:20,395 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) [2022-01-31 22:50:20,400 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 [2022-01-31 22:50:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:50:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:50:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:50:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 22:50:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-01-31 22:50:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-01-31 22:50:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:50:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:50:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:50:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 22:50:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 22:50:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:50:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:50:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 22:50:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 22:50:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-31 22:50:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-01-31 22:50:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:50:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:50:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:50:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:50:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:50:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:50:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:50:20,498 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:50:20,499 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:50:20,606 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:50:20,610 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:50:20,610 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 22:50:20,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:50:20 BoogieIcfgContainer [2022-01-31 22:50:20,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:50:20,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:50:20,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:50:20,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:50:20,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:50:20" (1/3) ... [2022-01-31 22:50:20,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b544978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:50:20, skipping insertion in model container [2022-01-31 22:50:20,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:50:20" (2/3) ... [2022-01-31 22:50:20,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b544978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:50:20, skipping insertion in model container [2022-01-31 22:50:20,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:50:20" (3/3) ... [2022-01-31 22:50:20,635 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_3.i [2022-01-31 22:50:20,638 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:50:20,638 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:50:20,679 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:50:20,683 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=JORDAN [2022-01-31 22:50:20,683 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:50:20,695 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) [2022-01-31 22:50:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 22:50:20,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:50:20,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:50:20,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:50:20,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:50:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1142620101, now seen corresponding path program 1 times [2022-01-31 22:50:20,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:50:20,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294256088] [2022-01-31 22:50:20,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:50:20,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:50:20,763 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:50:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:50:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:50:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:50:20,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:50:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:50:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 22:50:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:50:20,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 22:50:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:50:20,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:50:20,904 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:50:20,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294256088] [2022-01-31 22:50:20,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [294256088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:50:20,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:50:20,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 22:50:20,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471546925] [2022-01-31 22:50:20,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:50:20,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 22:50:20,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:50:20,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 22:50:20,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 22:50:20,935 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) [2022-01-31 22:50:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:50:20,989 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2022-01-31 22:50:20,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 22:50:20,992 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 [2022-01-31 22:50:20,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:50:20,996 INFO L225 Difference]: With dead ends: 47 [2022-01-31 22:50:20,997 INFO L226 Difference]: Without dead ends: 23 [2022-01-31 22:50:20,999 INFO L932 BasicCegarLoop]: 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 [2022-01-31 22:50:21,001 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:50:21,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:50:21,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-31 22:50:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-31 22:50:21,029 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) [2022-01-31 22:50:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2022-01-31 22:50:21,031 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 22 [2022-01-31 22:50:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:50:21,032 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2022-01-31 22:50:21,032 INFO L471 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) [2022-01-31 22:50:21,032 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2022-01-31 22:50:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 22:50:21,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:50:21,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:50:21,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:50:21,035 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:50:21,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:50:21,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2141229945, now seen corresponding path program 1 times [2022-01-31 22:50:21,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:50:21,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387807341] [2022-01-31 22:50:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:50:21,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:50:21,042 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:50:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:50:21,053 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:50:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:50:21,082 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:50:21,083 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:50:21,087 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 22:50:21,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:50:21,090 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 22:50:21,093 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:50:21,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:50:21 BoogieIcfgContainer [2022-01-31 22:50:21,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:50:21,108 INFO L158 Benchmark]: Toolchain (without parser) took 1036.88ms. Allocated memory was 215.0MB in the beginning and 355.5MB in the end (delta: 140.5MB). Free memory was 159.1MB in the beginning and 284.5MB in the end (delta: -125.4MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. [2022-01-31 22:50:21,109 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 215.0MB. Free memory is still 175.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:50:21,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.75ms. Allocated memory was 215.0MB in the beginning and 355.5MB in the end (delta: 140.5MB). Free memory was 158.8MB in the beginning and 325.8MB in the end (delta: -167.0MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2022-01-31 22:50:21,112 INFO L158 Benchmark]: Boogie Preprocessor took 32.44ms. Allocated memory is still 355.5MB. Free memory was 325.8MB in the beginning and 324.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 22:50:21,113 INFO L158 Benchmark]: RCFGBuilder took 271.23ms. Allocated memory is still 355.5MB. Free memory was 324.3MB in the beginning and 313.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 22:50:21,114 INFO L158 Benchmark]: TraceAbstraction took 477.89ms. Allocated memory is still 355.5MB. Free memory was 312.8MB in the beginning and 284.5MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-01-31 22:50:21,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 215.0MB. Free memory is still 175.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.75ms. Allocated memory was 215.0MB in the beginning and 355.5MB in the end (delta: 140.5MB). Free memory was 158.8MB in the beginning and 325.8MB in the end (delta: -167.0MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.44ms. Allocated memory is still 355.5MB. Free memory was 325.8MB in the beginning and 324.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 271.23ms. Allocated memory is still 355.5MB. Free memory was 324.3MB in the beginning and 313.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 477.89ms. Allocated memory is still 355.5MB. Free memory was 312.8MB in the beginning and 284.5MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. 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 > -0.6f && IN < 0.6f) [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L42] CALL, EXPR f(IN) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L42] RET, EXPR f(IN) [L42] CALL, EXPR fp(IN) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L42] RET, EXPR fp(IN) [L42] float x = IN - f(IN)/fp(IN); [L50] COND TRUE !(x < 0.1) [L51] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 24 mSDtfsCounter, 5 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: No data available, 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 [2022-01-31 22:50:21,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...