/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_1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:11:57,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:11:57,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:11:57,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:11:57,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:11:57,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:11:57,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:11:57,857 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 00:11:57,870 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:11:57,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:11:57,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:11:57,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:11:57,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:11:57,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:11:57,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:11:57,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:11:57,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:11:57,872 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:11:57,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:11:57,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:11:57,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:11:57,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:11:57,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:11:57,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:11:57,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:11:57,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:11:57,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:11:57,874 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:11:57,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:11:58,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:11:58,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:11:58,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:11:58,054 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:11:58,059 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:11:58,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/newton_1_3.i [2022-02-01 00:11:58,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6fb84fde/5bd72f4af7984c19ae839a046c58396f/FLAGadb6d48b8 [2022-02-01 00:11:58,433 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:11:58,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_3.i [2022-02-01 00:11:58,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6fb84fde/5bd72f4af7984c19ae839a046c58396f/FLAGadb6d48b8 [2022-02-01 00:11:58,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6fb84fde/5bd72f4af7984c19ae839a046c58396f [2022-02-01 00:11:58,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:11:58,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:11:58,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:11:58,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:11:58,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:11:58,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:11:58" (1/1) ... [2022-02-01 00:11:58,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54814db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:11:58, skipping insertion in model container [2022-02-01 00:11:58,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:11:58" (1/1) ... [2022-02-01 00:11:58,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:11:58,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:11:58,994 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] [2022-02-01 00:11:58,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:11:59,000 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:11:59,045 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] [2022-02-01 00:11:59,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:11:59,058 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:11:59,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:11:59 WrapperNode [2022-02-01 00:11:59,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:11:59,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:11:59,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:11:59,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:11:59,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:11:59" (1/1) ... [2022-02-01 00:11:59,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:11:59" (1/1) ... [2022-02-01 00:11:59,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:11:59" (1/1) ... [2022-02-01 00:11:59,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:11:59" (1/1) ... [2022-02-01 00:11:59,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:11:59" (1/1) ... [2022-02-01 00:11:59,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:11:59" (1/1) ... [2022-02-01 00:11:59,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:11:59" (1/1) ... [2022-02-01 00:11:59,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:11:59,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:11:59,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:11:59,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:11:59,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:11:59" (1/1) ... [2022-02-01 00:11:59,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:11:59,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:11:59,124 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 00:11:59,127 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 00:11:59,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:11:59,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:11:59,149 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:11:59,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-01 00:11:59,150 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-02-01 00:11:59,150 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-02-01 00:11:59,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:11:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:11:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:11:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-01 00:11:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-01 00:11:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:11:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:11:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-01 00:11:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:11:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-02-01 00:11:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-02-01 00:11:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:11:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:11:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:11:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:11:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:11:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:11:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:11:59,195 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:11:59,196 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:11:59,277 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:11:59,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:11:59,281 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-01 00:11:59,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:11:59 BoogieIcfgContainer [2022-02-01 00:11:59,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:11:59,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:11:59,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:11:59,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:11:59,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:11:58" (1/3) ... [2022-02-01 00:11:59,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312d554e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:11:59, skipping insertion in model container [2022-02-01 00:11:59,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:11:59" (2/3) ... [2022-02-01 00:11:59,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312d554e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:11:59, skipping insertion in model container [2022-02-01 00:11:59,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:11:59" (3/3) ... [2022-02-01 00:11:59,288 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_3.i [2022-02-01 00:11:59,291 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:11:59,291 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:11:59,321 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:11:59,326 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 00:11:59,326 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:11:59,336 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) [2022-02-01 00:11:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-01 00:11:59,341 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:11:59,342 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] [2022-02-01 00:11:59,342 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:11:59,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:11:59,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1142620101, now seen corresponding path program 1 times [2022-02-01 00:11:59,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:11:59,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911336606] [2022-02-01 00:11:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:11:59,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:11:59,392 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:11:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:11:59,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:11:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:11:59,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:11:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:11:59,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-01 00:11:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:11:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-01 00:11:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:11:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-01 00:11:59,473 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:11:59,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911336606] [2022-02-01 00:11:59,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [911336606] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:11:59,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:11:59,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-01 00:11:59,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810788729] [2022-02-01 00:11:59,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:11:59,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-01 00:11:59,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:11:59,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-01 00:11:59,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:11:59,508 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) [2022-02-01 00:11:59,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:11:59,540 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2022-02-01 00:11:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-01 00:11:59,542 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 [2022-02-01 00:11:59,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:11:59,547 INFO L225 Difference]: With dead ends: 47 [2022-02-01 00:11:59,547 INFO L226 Difference]: Without dead ends: 23 [2022-02-01 00:11:59,549 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 [2022-02-01 00:11:59,551 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 [2022-02-01 00:11:59,552 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] [2022-02-01 00:11:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-01 00:11:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-02-01 00:11:59,574 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) [2022-02-01 00:11:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2022-02-01 00:11:59,575 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 22 [2022-02-01 00:11:59,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:11:59,576 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2022-02-01 00:11:59,576 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) [2022-02-01 00:11:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2022-02-01 00:11:59,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-01 00:11:59,583 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:11:59,583 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] [2022-02-01 00:11:59,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:11:59,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:11:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:11:59,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2141229945, now seen corresponding path program 1 times [2022-02-01 00:11:59,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:11:59,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122062798] [2022-02-01 00:11:59,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:11:59,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:11:59,587 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:11:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:11:59,616 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:11:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:11:59,644 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:11:59,644 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:11:59,646 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:11:59,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:11:59,652 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:11:59,657 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:11:59,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:11:59 BoogieIcfgContainer [2022-02-01 00:11:59,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:11:59,671 INFO L158 Benchmark]: Toolchain (without parser) took 800.88ms. Allocated memory was 167.8MB in the beginning and 231.7MB in the end (delta: 64.0MB). Free memory was 112.0MB in the beginning and 165.0MB in the end (delta: -53.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-01 00:11:59,672 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 167.8MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:11:59,673 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.22ms. Allocated memory was 167.8MB in the beginning and 231.7MB in the end (delta: 64.0MB). Free memory was 111.8MB in the beginning and 205.9MB in the end (delta: -94.0MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2022-02-01 00:11:59,675 INFO L158 Benchmark]: Boogie Preprocessor took 33.68ms. Allocated memory is still 231.7MB. Free memory was 205.9MB in the beginning and 204.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:11:59,677 INFO L158 Benchmark]: RCFGBuilder took 189.10ms. Allocated memory is still 231.7MB. Free memory was 204.0MB in the beginning and 193.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-01 00:11:59,677 INFO L158 Benchmark]: TraceAbstraction took 386.73ms. Allocated memory is still 231.7MB. Free memory was 192.8MB in the beginning and 165.0MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-02-01 00:11:59,681 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 167.8MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 187.22ms. Allocated memory was 167.8MB in the beginning and 231.7MB in the end (delta: 64.0MB). Free memory was 111.8MB in the beginning and 205.9MB in the end (delta: -94.0MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.68ms. Allocated memory is still 231.7MB. Free memory was 205.9MB in the beginning and 204.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 189.10ms. Allocated memory is still 231.7MB. Free memory was 204.0MB in the beginning and 193.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 386.73ms. Allocated memory is still 231.7MB. Free memory was 192.8MB in the beginning and 165.0MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. 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: 0.3s, 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 [2022-02-01 00:11:59,721 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...