/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/float-newlib/double_req_bl_0620b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:18:09,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:18:09,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:18:09,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:18:09,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:18:09,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:18:09,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:18:09,285 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 00:18:09,291 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:18:09,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:18:09,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:18:09,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:18:09,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:18:09,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:18:09,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:18:09,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:18:09,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:18:09,293 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:18:09,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:18:09,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:18:09,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:18:09,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:18:09,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:18:09,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:18:09,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:18:09,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:18:09,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:18:09,294 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:18:09,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:18:09,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:18:09,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:18:09,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:18:09,528 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:18:09,528 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:18:09,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0620b.c [2022-02-01 00:18:09,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ade0158/1f3eaca67afc41c8b0f1b1c59b262d6d/FLAGfd6b0393b [2022-02-01 00:18:09,936 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:18:09,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0620b.c [2022-02-01 00:18:09,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ade0158/1f3eaca67afc41c8b0f1b1c59b262d6d/FLAGfd6b0393b [2022-02-01 00:18:09,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ade0158/1f3eaca67afc41c8b0f1b1c59b262d6d [2022-02-01 00:18:09,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:18:09,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:18:09,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:18:09,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:18:09,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:18:09,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:18:09" (1/1) ... [2022-02-01 00:18:09,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c5f2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:09, skipping insertion in model container [2022-02-01 00:18:09,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:18:09" (1/1) ... [2022-02-01 00:18:09,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:18:09,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:18:10,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0620b.c[3928,3941] [2022-02-01 00:18:10,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:18:10,129 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:18:10,150 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0620b.c[3928,3941] [2022-02-01 00:18:10,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:18:10,172 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:18:10,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:10 WrapperNode [2022-02-01 00:18:10,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:18:10,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:18:10,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:18:10,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:18:10,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:10" (1/1) ... [2022-02-01 00:18:10,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:10" (1/1) ... [2022-02-01 00:18:10,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:10" (1/1) ... [2022-02-01 00:18:10,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:10" (1/1) ... [2022-02-01 00:18:10,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:10" (1/1) ... [2022-02-01 00:18:10,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:10" (1/1) ... [2022-02-01 00:18:10,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:10" (1/1) ... [2022-02-01 00:18:10,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:18:10,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:18:10,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:18:10,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:18:10,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:10" (1/1) ... [2022-02-01 00:18:10,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:18:10,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:18:10,256 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 00:18:10,265 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 00:18:10,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:18:10,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:18:10,283 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:18:10,283 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-02-01 00:18:10,283 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2022-02-01 00:18:10,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2022-02-01 00:18:10,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:18:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:18:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:18:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:18:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:18:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-01 00:18:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-02-01 00:18:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:18:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:18:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:18:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:18:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:18:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:18:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2022-02-01 00:18:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2022-02-01 00:18:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:18:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:18:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:18:10,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:18:10,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:18:10,347 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:18:10,348 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:18:10,570 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:18:10,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:18:10,575 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-02-01 00:18:10,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:18:10 BoogieIcfgContainer [2022-02-01 00:18:10,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:18:10,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:18:10,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:18:10,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:18:10,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:18:09" (1/3) ... [2022-02-01 00:18:10,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b02245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:18:10, skipping insertion in model container [2022-02-01 00:18:10,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:18:10" (2/3) ... [2022-02-01 00:18:10,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b02245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:18:10, skipping insertion in model container [2022-02-01 00:18:10,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:18:10" (3/3) ... [2022-02-01 00:18:10,587 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0620b.c [2022-02-01 00:18:10,591 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:18:10,591 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:18:10,631 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:18:10,637 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 00:18:10,638 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:18:10,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 45 states have internal predecessors, (68), 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 00:18:10,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-01 00:18:10,668 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:18:10,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:18:10,669 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:18:10,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:18:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1130845381, now seen corresponding path program 1 times [2022-02-01 00:18:10,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:18:10,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273483139] [2022-02-01 00:18:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:18:10,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:18:10,730 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:18:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:18:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:10,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:18:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:18:10,953 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 00:18:10,955 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:18:10,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273483139] [2022-02-01 00:18:10,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [273483139] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:18:10,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:18:10,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:18:10,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998414769] [2022-02-01 00:18:10,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:18:10,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:18:10,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:18:10,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:18:10,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:18:10,985 INFO L87 Difference]: Start difference. First operand has 56 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 45 states have internal predecessors, (68), 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 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-01 00:18:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:18:11,214 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2022-02-01 00:18:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:18:11,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-02-01 00:18:11,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:18:11,226 INFO L225 Difference]: With dead ends: 104 [2022-02-01 00:18:11,226 INFO L226 Difference]: Without dead ends: 52 [2022-02-01 00:18:11,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:18:11,233 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 56 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-01 00:18:11,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 62 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-01 00:18:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-02-01 00:18:11,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-02-01 00:18:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 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 00:18:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2022-02-01 00:18:11,280 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 19 [2022-02-01 00:18:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:18:11,281 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2022-02-01 00:18:11,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-01 00:18:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2022-02-01 00:18:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-01 00:18:11,283 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:18:11,283 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] [2022-02-01 00:18:11,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:18:11,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:18:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:18:11,285 INFO L85 PathProgramCache]: Analyzing trace with hash 503725922, now seen corresponding path program 1 times [2022-02-01 00:18:11,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:18:11,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681592102] [2022-02-01 00:18:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:18:11,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:18:11,296 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:18:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:18:11,350 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:18:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:18:11,388 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:18:11,388 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:18:11,390 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:18:11,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:18:11,393 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:18:11,399 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:18:11,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:18:11 BoogieIcfgContainer [2022-02-01 00:18:11,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:18:11,414 INFO L158 Benchmark]: Toolchain (without parser) took 1461.29ms. Allocated memory is still 186.6MB. Free memory was 133.1MB in the beginning and 85.0MB in the end (delta: 48.1MB). Peak memory consumption was 48.7MB. Max. memory is 8.0GB. [2022-02-01 00:18:11,415 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:18:11,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.96ms. Allocated memory is still 186.6MB. Free memory was 132.9MB in the beginning and 155.7MB in the end (delta: -22.8MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-02-01 00:18:11,417 INFO L158 Benchmark]: Boogie Preprocessor took 51.86ms. Allocated memory is still 186.6MB. Free memory was 155.7MB in the beginning and 153.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-01 00:18:11,418 INFO L158 Benchmark]: RCFGBuilder took 351.56ms. Allocated memory is still 186.6MB. Free memory was 153.7MB in the beginning and 137.4MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-02-01 00:18:11,420 INFO L158 Benchmark]: TraceAbstraction took 835.26ms. Allocated memory is still 186.6MB. Free memory was 136.9MB in the beginning and 85.0MB in the end (delta: 51.9MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. [2022-02-01 00:18:11,421 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 186.6MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.96ms. Allocated memory is still 186.6MB. Free memory was 132.9MB in the beginning and 155.7MB in the end (delta: -22.8MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.86ms. Allocated memory is still 186.6MB. Free memory was 155.7MB in the beginning and 153.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 351.56ms. Allocated memory is still 186.6MB. Free memory was 153.7MB in the beginning and 137.4MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 835.26ms. Allocated memory is still 186.6MB. Free memory was 136.9MB in the beginning and 85.0MB in the end (delta: 51.9MB). Peak memory consumption was 51.4MB. 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: 161]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 160, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of bitwiseAnd at line 75. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L156] double x = 0.0; [L157] CALL, EXPR atan_double(x) [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff [L76] COND FALSE !(ix >= 0x44100000) [L90] COND TRUE ix < 0x3fdc0000 [L91] COND TRUE ix < 0x3e200000 [L92] COND TRUE huge_atan + x > one_atan [L93] return x; [L157] RET, EXPR atan_double(x) [L157] double res = atan_double(x); [L160] EXPR res == 0.0 && __signbit_double(res) == 0 [L160] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L161] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 66 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 60 mSDtfsCounter, 66 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 5, 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 00:18:11,447 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...