/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/float_req_bl_0680a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:20:00,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:20:00,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:20:00,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-01 00:20:00,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-01 00:20:00,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-01 00:20:00,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-01 00:20:00,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-01 00:20:00,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-01 00:20:00,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-01 00:20:00,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-01 00:20:00,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-01 00:20:00,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:20:00,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:20:00,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:20:00,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:20:00,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:20:00,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:20:00,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:20:00,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:20:00,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:20:00,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:20:00,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:20:00,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:20:00,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-01 00:20:00,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-01 00:20:00,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-01 00:20:00,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-01 00:20:00,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-01 00:20:00,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-01 00:20:00,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-01 00:20:00,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-01 00:20:00,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-01 00:20:00,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-01 00:20:00,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-01 00:20:00,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-01 00:20:00,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-01 00:20:00,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-01 00:20:00,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:20:00,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:20:00,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:20:00,457 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 00:20:00,462 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:20:00,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:20:00,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:20:00,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:20:00,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:20:00,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:20:00,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:20:00,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:20:00,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:20:00,464 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:20:00,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:20:00,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:20:00,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:20:00,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:20:00,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:20:00,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:00,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:20:00,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:20:00,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:20:00,465 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:20:00,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:20:00,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:20:00,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:20:00,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:20:00,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:20:00,692 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:20:00,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0680a.c [2022-02-01 00:20:00,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f08b1bb3/7dfa6fea4db24de881cdf168f2838827/FLAGf510251c2 [2022-02-01 00:20:01,080 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:20:01,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0680a.c [2022-02-01 00:20:01,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f08b1bb3/7dfa6fea4db24de881cdf168f2838827/FLAGf510251c2 [2022-02-01 00:20:01,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f08b1bb3/7dfa6fea4db24de881cdf168f2838827 [2022-02-01 00:20:01,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:20:01,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:20:01,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:01,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:20:01,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:20:01,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:01" (1/1) ... [2022-02-01 00:20:01,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b37397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:01, skipping insertion in model container [2022-02-01 00:20:01,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:20:01" (1/1) ... [2022-02-01 00:20:01,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:20:01,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:20:01,349 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/float_req_bl_0680a.c[5219,5232] [2022-02-01 00:20:01,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:01,362 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:20:01,401 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/float_req_bl_0680a.c[5219,5232] [2022-02-01 00:20:01,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:20:01,423 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:20:01,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:01 WrapperNode [2022-02-01 00:20:01,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:20:01,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:20:01,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:20:01,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:20:01,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:01" (1/1) ... [2022-02-01 00:20:01,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:01" (1/1) ... [2022-02-01 00:20:01,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:01" (1/1) ... [2022-02-01 00:20:01,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:01" (1/1) ... [2022-02-01 00:20:01,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:01" (1/1) ... [2022-02-01 00:20:01,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:01" (1/1) ... [2022-02-01 00:20:01,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:01" (1/1) ... [2022-02-01 00:20:01,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:20:01,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:20:01,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:20:01,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:20:01,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:01" (1/1) ... [2022-02-01 00:20:01,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:20:01,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:20:01,523 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 00:20:01,560 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 00:20:01,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:20:01,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:20:01,571 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:20:01,571 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-02-01 00:20:01,571 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-02-01 00:20:01,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2f [2022-02-01 00:20:01,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:20:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:20:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-02-01 00:20:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2f [2022-02-01 00:20:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:20:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:20:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:20:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:20:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:20:01,633 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:20:01,634 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:20:01,918 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:20:01,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:20:01,922 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-02-01 00:20:01,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:01 BoogieIcfgContainer [2022-02-01 00:20:01,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:20:01,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:20:01,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:20:01,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:20:01,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:20:01" (1/3) ... [2022-02-01 00:20:01,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52128a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:01, skipping insertion in model container [2022-02-01 00:20:01,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:20:01" (2/3) ... [2022-02-01 00:20:01,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52128a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:20:01, skipping insertion in model container [2022-02-01 00:20:01,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:20:01" (3/3) ... [2022-02-01 00:20:01,939 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0680a.c [2022-02-01 00:20:01,943 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:20:01,943 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:20:01,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:20:01,982 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 00:20:01,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:20:01,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 85 states have (on average 1.6352941176470588) internal successors, (139), 86 states have internal predecessors, (139), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-01 00:20:02,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-01 00:20:02,000 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:02,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:20:02,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:02,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:02,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1073011290, now seen corresponding path program 1 times [2022-02-01 00:20:02,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:02,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944457903] [2022-02-01 00:20:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:02,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:02,057 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:02,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:20:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:02,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-01 00:20:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:20:02,249 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 00:20:02,250 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:20:02,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944457903] [2022-02-01 00:20:02,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1944457903] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:20:02,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:20:02,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:20:02,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260836961] [2022-02-01 00:20:02,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:20:02,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:20:02,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:20:02,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:20:02,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:20:02,280 INFO L87 Difference]: Start difference. First operand has 99 states, 85 states have (on average 1.6352941176470588) internal successors, (139), 86 states have internal predecessors, (139), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 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 00:20:02,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:20:02,647 INFO L93 Difference]: Finished difference Result 190 states and 302 transitions. [2022-02-01 00:20:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:20:02,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 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 18 [2022-02-01 00:20:02,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:20:02,654 INFO L225 Difference]: With dead ends: 190 [2022-02-01 00:20:02,654 INFO L226 Difference]: Without dead ends: 95 [2022-02-01 00:20:02,656 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 00:20:02,658 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 123 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-01 00:20:02,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 130 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-01 00:20:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-02-01 00:20:02,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-02-01 00:20:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 83 states have internal predecessors, (121), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-01 00:20:02,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 134 transitions. [2022-02-01 00:20:02,696 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 134 transitions. Word has length 18 [2022-02-01 00:20:02,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:20:02,696 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 134 transitions. [2022-02-01 00:20:02,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 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 00:20:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 134 transitions. [2022-02-01 00:20:02,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-01 00:20:02,697 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:20:02,697 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] [2022-02-01 00:20:02,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:20:02,698 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:20:02,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:20:02,698 INFO L85 PathProgramCache]: Analyzing trace with hash 76355331, now seen corresponding path program 1 times [2022-02-01 00:20:02,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:20:02,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225996913] [2022-02-01 00:20:02,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:20:02,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:20:02,701 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:20:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:02,742 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:20:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:20:02,829 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:20:02,829 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:20:02,839 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:20:02,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:20:02,842 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-01 00:20:02,843 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:20:02,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:20:02 BoogieIcfgContainer [2022-02-01 00:20:02,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:20:02,855 INFO L158 Benchmark]: Toolchain (without parser) took 1748.41ms. Allocated memory was 226.5MB in the beginning and 272.6MB in the end (delta: 46.1MB). Free memory was 175.9MB in the beginning and 202.0MB in the end (delta: -26.1MB). Peak memory consumption was 20.9MB. Max. memory is 8.0GB. [2022-02-01 00:20:02,855 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 226.5MB. Free memory is still 192.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:20:02,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.95ms. Allocated memory is still 226.5MB. Free memory was 175.7MB in the beginning and 197.7MB in the end (delta: -22.0MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-02-01 00:20:02,856 INFO L158 Benchmark]: Boogie Preprocessor took 56.42ms. Allocated memory is still 226.5MB. Free memory was 197.7MB in the beginning and 195.0MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-01 00:20:02,856 INFO L158 Benchmark]: RCFGBuilder took 442.93ms. Allocated memory is still 226.5MB. Free memory was 195.0MB in the beginning and 174.4MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-02-01 00:20:02,857 INFO L158 Benchmark]: TraceAbstraction took 928.92ms. Allocated memory was 226.5MB in the beginning and 272.6MB in the end (delta: 46.1MB). Free memory was 174.0MB in the beginning and 202.0MB in the end (delta: -28.0MB). Peak memory consumption was 17.5MB. Max. memory is 8.0GB. [2022-02-01 00:20:02,859 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 226.5MB. Free memory is still 192.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 316.95ms. Allocated memory is still 226.5MB. Free memory was 175.7MB in the beginning and 197.7MB in the end (delta: -22.0MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.42ms. Allocated memory is still 226.5MB. Free memory was 197.7MB in the beginning and 195.0MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 442.93ms. Allocated memory is still 226.5MB. Free memory was 195.0MB in the beginning and 174.4MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 928.92ms. Allocated memory was 226.5MB in the beginning and 272.6MB in the end (delta: 46.1MB). Free memory was 174.0MB in the beginning and 202.0MB in the end (delta: -28.0MB). Peak memory consumption was 17.5MB. 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: 228]: 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 227, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someUnaryFLOAToperation at line 222, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L222] float x = -0.0f; [L223] float y = 0.0f; [L224] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; [L224] RET, EXPR __ieee754_atan2f(y, x) [L224] float res = __ieee754_atan2f(y, x); [L227] COND TRUE res != pi [L228] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 130 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 138 IncrementalHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 128 mSDtfsCounter, 138 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=99occurred 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 00:20:02,892 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...