/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/floats-cdfpl/newton_3_5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:12:54,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:12:54,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:12:54,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-01 00:12:54,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-01 00:12:54,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-01 00:12:54,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-01 00:12:54,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-01 00:12:54,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-01 00:12:54,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-01 00:12:54,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-01 00:12:54,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-01 00:12:54,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:12:54,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:12:54,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:12:54,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:12:54,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:12:54,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:12:54,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:12:54,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:12:54,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:12:54,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:12:54,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:12:54,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:12:54,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-01 00:12:54,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-01 00:12:54,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-01 00:12:54,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-01 00:12:54,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-01 00:12:54,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-01 00:12:54,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-01 00:12:54,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-01 00:12:54,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-01 00:12:54,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-01 00:12:54,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-01 00:12:54,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-01 00:12:54,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-01 00:12:54,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-01 00:12:54,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:12:54,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:12:54,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:12:54,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-01 00:12:54,678 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:12:54,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:12:54,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:12:54,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:12:54,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:12:54,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:12:54,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:12:54,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:12:54,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:12:54,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:12:54,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:12:54,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:12:54,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:12:54,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:12:54,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:12:54,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:12:54,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:12:54,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:12:54,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:12:54,680 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:12:54,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:12:54,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:12:54,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:12:54,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:12:54,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:12:54,884 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:12:54,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/newton_3_5.i [2022-02-01 00:12:54,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6ddecc9/2b07a11aae5f48bdb7f84414a0e1868d/FLAGa72bbae6b [2022-02-01 00:12:55,285 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:12:55,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_3_5.i [2022-02-01 00:12:55,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6ddecc9/2b07a11aae5f48bdb7f84414a0e1868d/FLAGa72bbae6b [2022-02-01 00:12:55,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6ddecc9/2b07a11aae5f48bdb7f84414a0e1868d [2022-02-01 00:12:55,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:12:55,308 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:12:55,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:12:55,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:12:55,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:12:55,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:12:55" (1/1) ... [2022-02-01 00:12:55,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1086075c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:55, skipping insertion in model container [2022-02-01 00:12:55,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:12:55" (1/1) ... [2022-02-01 00:12:55,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:12:55,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:12:55,480 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_3_5.i[1764,1777] [2022-02-01 00:12:55,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:12:55,492 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:12:55,509 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_3_5.i[1764,1777] [2022-02-01 00:12:55,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:12:55,520 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:12:55,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:55 WrapperNode [2022-02-01 00:12:55,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:12:55,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:12:55,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:12:55,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:12:55,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:55" (1/1) ... [2022-02-01 00:12:55,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:55" (1/1) ... [2022-02-01 00:12:55,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:55" (1/1) ... [2022-02-01 00:12:55,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:55" (1/1) ... [2022-02-01 00:12:55,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:55" (1/1) ... [2022-02-01 00:12:55,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:55" (1/1) ... [2022-02-01 00:12:55,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:55" (1/1) ... [2022-02-01 00:12:55,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:12:55,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:12:55,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:12:55,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:12:55,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:55" (1/1) ... [2022-02-01 00:12:55,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:12:55,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:12:55,574 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) [2022-02-01 00:12:55,576 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 [2022-02-01 00:12:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:12:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:12:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:12:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-01 00:12:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-02-01 00:12:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-02-01 00:12:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:12:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:12:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:12:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-01 00:12:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-01 00:12:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:12:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:12:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-01 00:12:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:12:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-02-01 00:12:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-02-01 00:12:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:12:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:12:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:12:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:12:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:12:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:12:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:12:55,648 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:12:55,649 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:12:55,726 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:12:55,730 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:12:55,730 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-01 00:12:55,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:12:55 BoogieIcfgContainer [2022-02-01 00:12:55,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:12:55,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:12:55,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:12:55,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:12:55,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:12:55" (1/3) ... [2022-02-01 00:12:55,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23585db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:12:55, skipping insertion in model container [2022-02-01 00:12:55,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:12:55" (2/3) ... [2022-02-01 00:12:55,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23585db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:12:55, skipping insertion in model container [2022-02-01 00:12:55,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:12:55" (3/3) ... [2022-02-01 00:12:55,737 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_5.i [2022-02-01 00:12:55,740 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:12:55,740 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:12:55,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:12:55,772 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=QVASR [2022-02-01 00:12:55,772 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:12:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-01 00:12:55,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-01 00:12:55,787 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:12:55,787 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:12:55,788 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:12:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:12:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1571588004, now seen corresponding path program 1 times [2022-02-01 00:12:55,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:12:55,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376549336] [2022-02-01 00:12:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:12:55,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:12:55,837 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:12:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:55,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:12:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:55,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:12:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:55,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-01 00:12:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:56,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-01 00:12:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:56,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-01 00:12:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-01 00:12:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:56,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-01 00:12:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-01 00:12:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:12:56,028 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-02-01 00:12:56,048 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:12:56,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376549336] [2022-02-01 00:12:56,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [376549336] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:12:56,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:12:56,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-01 00:12:56,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917964964] [2022-02-01 00:12:56,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:12:56,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-01 00:12:56,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:12:56,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-01 00:12:56,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:12:56,083 INFO L87 Difference]: Start difference. First operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-01 00:12:56,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:12:56,170 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-02-01 00:12:56,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-01 00:12:56,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2022-02-01 00:12:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:12:56,179 INFO L225 Difference]: With dead ends: 59 [2022-02-01 00:12:56,179 INFO L226 Difference]: Without dead ends: 29 [2022-02-01 00:12:56,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:12:56,188 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-01 00:12:56,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-01 00:12:56,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-01 00:12:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-02-01 00:12:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-01 00:12:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-02-01 00:12:56,238 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 40 [2022-02-01 00:12:56,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:12:56,238 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-02-01 00:12:56,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-01 00:12:56,239 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-02-01 00:12:56,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-01 00:12:56,241 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:12:56,241 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:12:56,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:12:56,242 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:12:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:12:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1846347618, now seen corresponding path program 1 times [2022-02-01 00:12:56,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:12:56,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354266360] [2022-02-01 00:12:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:12:56,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:12:56,254 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:12:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:12:56,280 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:12:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:12:56,320 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:12:56,321 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:12:56,324 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:12:56,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:12:56,330 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:12:56,333 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:12:56,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:12:56 BoogieIcfgContainer [2022-02-01 00:12:56,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:12:56,348 INFO L158 Benchmark]: Toolchain (without parser) took 1040.05ms. Allocated memory is still 243.3MB. Free memory was 191.8MB in the beginning and 172.7MB in the end (delta: 19.1MB). Peak memory consumption was 18.7MB. Max. memory is 8.0GB. [2022-02-01 00:12:56,349 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 243.3MB. Free memory is still 207.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:12:56,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.16ms. Allocated memory is still 243.3MB. Free memory was 191.6MB in the beginning and 216.7MB in the end (delta: -25.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-01 00:12:56,351 INFO L158 Benchmark]: Boogie Preprocessor took 25.19ms. Allocated memory is still 243.3MB. Free memory was 216.7MB in the beginning and 215.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:12:56,352 INFO L158 Benchmark]: RCFGBuilder took 184.60ms. Allocated memory is still 243.3MB. Free memory was 215.3MB in the beginning and 205.1MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-01 00:12:56,354 INFO L158 Benchmark]: TraceAbstraction took 615.05ms. Allocated memory is still 243.3MB. Free memory was 204.8MB in the beginning and 172.7MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-02-01 00:12:56,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 243.3MB. Free memory is still 207.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 210.16ms. Allocated memory is still 243.3MB. Free memory was 191.6MB in the beginning and 216.7MB in the end (delta: -25.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.19ms. Allocated memory is still 243.3MB. Free memory was 216.7MB in the beginning and 215.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 184.60ms. Allocated memory is still 243.3MB. Free memory was 215.3MB in the beginning and 205.1MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 615.05ms. Allocated memory is still 243.3MB. Free memory was 204.8MB in the beginning and 172.7MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. 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 46. 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) [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); [L44] CALL, EXPR f(x) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L44] RET, EXPR f(x) [L44] CALL, EXPR fp(x) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L44] RET, EXPR fp(x) [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L46] RET, EXPR f(x) [L46] CALL, EXPR fp(x) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L46] RET, EXPR fp(x) [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) [L51] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 30 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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 [2022-02-01 00:12:56,400 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...