/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:01:15,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:01:15,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:01:15,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:01:15,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:01:15,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:01:15,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:01:15,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:01:15,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:01:15,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:01:15,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:01:15,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:01:15,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:01:15,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:01:15,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:01:15,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:01:15,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:01:15,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:01:15,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:01:15,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:01:15,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 23:01:15,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:01:15,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:01:15,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:01:15,141 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 23:01:15,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:01:15,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 23:01:15,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:01:15,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:01:15,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:01:15,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:01:15,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 23:01:15,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:01:15,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:01:15,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:01:15,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:01:15,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:01:15,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:01:15,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:01:15,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:01:15,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:01:15,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:01:15,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:01:15,143 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 23:01:15,143 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:01:15,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:01:15,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:01:15,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:01:15,321 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:01:15,329 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:01:15,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2022-01-31 23:01:15,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e2c1c6f9/7ebe23c42306470b8ac1f2199d762b3e/FLAG8e73e12cb [2022-01-31 23:01:15,711 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:01:15,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2022-01-31 23:01:15,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e2c1c6f9/7ebe23c42306470b8ac1f2199d762b3e/FLAG8e73e12cb [2022-01-31 23:01:16,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e2c1c6f9/7ebe23c42306470b8ac1f2199d762b3e [2022-01-31 23:01:16,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:01:16,155 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:01:16,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:01:16,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:01:16,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:01:16,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:01:16" (1/1) ... [2022-01-31 23:01:16,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1264f36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:16, skipping insertion in model container [2022-01-31 23:01:16,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:01:16" (1/1) ... [2022-01-31 23:01:16,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:01:16,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:01:16,376 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_0620b.c[3330,3343] [2022-01-31 23:01:16,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:01:16,387 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:01:16,410 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_0620b.c[3330,3343] [2022-01-31 23:01:16,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:01:16,425 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:01:16,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:16 WrapperNode [2022-01-31 23:01:16,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:01:16,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:01:16,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:01:16,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:01:16,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:16" (1/1) ... [2022-01-31 23:01:16,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:16" (1/1) ... [2022-01-31 23:01:16,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:16" (1/1) ... [2022-01-31 23:01:16,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:16" (1/1) ... [2022-01-31 23:01:16,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:16" (1/1) ... [2022-01-31 23:01:16,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:16" (1/1) ... [2022-01-31 23:01:16,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:16" (1/1) ... [2022-01-31 23:01:16,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:01:16,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:01:16,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:01:16,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:01:16,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:16" (1/1) ... [2022-01-31 23:01:16,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:01:16,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:01:16,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 23:01:16,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 23:01:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:01:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:01:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:01:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-01-31 23:01:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-01-31 23:01:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2022-01-31 23:01:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:01:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:01:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:01:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:01:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:01:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 23:01:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-01-31 23:01:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:01:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 23:01:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:01:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:01:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:01:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 23:01:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-01-31 23:01:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2022-01-31 23:01:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:01:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:01:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:01:16,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-01-31 23:01:16,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:01:16,600 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:01:16,601 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:01:16,860 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:01:16,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:01:16,864 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-31 23:01:16,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:01:16 BoogieIcfgContainer [2022-01-31 23:01:16,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:01:16,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:01:16,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:01:16,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:01:16,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:01:16" (1/3) ... [2022-01-31 23:01:16,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549c6073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:01:16, skipping insertion in model container [2022-01-31 23:01:16,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:01:16" (2/3) ... [2022-01-31 23:01:16,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549c6073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:01:16, skipping insertion in model container [2022-01-31 23:01:16,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:01:16" (3/3) ... [2022-01-31 23:01:16,879 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2022-01-31 23:01:16,882 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:01:16,882 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:01:16,909 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:01:16,915 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 23:01:16,915 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:01:16,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 43 states have internal predecessors, (64), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 23:01:16,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-31 23:01:16,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:16,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:16,933 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:16,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1553749782, now seen corresponding path program 1 times [2022-01-31 23:01:16,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:16,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447548964] [2022-01-31 23:01:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:16,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:16,996 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:01:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:01:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:01:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:01:17,177 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:01:17,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447548964] [2022-01-31 23:01:17,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1447548964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:01:17,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:01:17,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:01:17,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693619728] [2022-01-31 23:01:17,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:01:17,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:01:17,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:01:17,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:01:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:01:17,206 INFO L87 Difference]: Start difference. First operand has 54 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 43 states have internal predecessors, (64), 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 3.25) 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) [2022-01-31 23:01:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:01:17,422 INFO L93 Difference]: Finished difference Result 100 states and 142 transitions. [2022-01-31 23:01:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:01:17,424 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 [2022-01-31 23:01:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:01:17,429 INFO L225 Difference]: With dead ends: 100 [2022-01-31 23:01:17,429 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 23:01:17,432 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 [2022-01-31 23:01:17,436 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 54 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:01:17,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 60 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:01:17,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 23:01:17,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-01-31 23:01:17,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:01:17,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2022-01-31 23:01:17,475 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 18 [2022-01-31 23:01:17,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:01:17,476 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2022-01-31 23:01:17,476 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) [2022-01-31 23:01:17,476 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2022-01-31 23:01:17,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 23:01:17,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:01:17,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:01:17,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:01:17,479 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:01:17,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:01:17,480 INFO L85 PathProgramCache]: Analyzing trace with hash 750916416, now seen corresponding path program 1 times [2022-01-31 23:01:17,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:01:17,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973885840] [2022-01-31 23:01:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:01:17,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:01:17,484 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:01:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:01:17,541 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 23:01:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 23:01:17,602 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 23:01:17,603 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 23:01:17,605 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:01:17,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:01:17,610 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:01:17,612 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:01:17,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:01:17 BoogieIcfgContainer [2022-01-31 23:01:17,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:01:17,624 INFO L158 Benchmark]: Toolchain (without parser) took 1468.36ms. Allocated memory is still 188.7MB. Free memory was 140.9MB in the beginning and 94.1MB in the end (delta: 46.8MB). Peak memory consumption was 47.9MB. Max. memory is 8.0GB. [2022-01-31 23:01:17,624 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 157.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:01:17,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.24ms. Allocated memory is still 188.7MB. Free memory was 140.7MB in the beginning and 164.3MB in the end (delta: -23.6MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-01-31 23:01:17,627 INFO L158 Benchmark]: Boogie Preprocessor took 46.02ms. Allocated memory is still 188.7MB. Free memory was 164.3MB in the beginning and 161.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:01:17,628 INFO L158 Benchmark]: RCFGBuilder took 392.77ms. Allocated memory is still 188.7MB. Free memory was 161.7MB in the beginning and 146.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-01-31 23:01:17,629 INFO L158 Benchmark]: TraceAbstraction took 756.23ms. Allocated memory is still 188.7MB. Free memory was 146.0MB in the beginning and 94.1MB in the end (delta: 51.9MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2022-01-31 23:01:17,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 157.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 268.24ms. Allocated memory is still 188.7MB. Free memory was 140.7MB in the beginning and 164.3MB in the end (delta: -23.6MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.02ms. Allocated memory is still 188.7MB. Free memory was 164.3MB in the beginning and 161.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 392.77ms. Allocated memory is still 188.7MB. Free memory was 161.7MB in the beginning and 146.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 756.23ms. Allocated memory is still 188.7MB. Free memory was 146.0MB in the beginning and 94.1MB in the end (delta: 51.9MB). Peak memory consumption was 52.4MB. 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: 144]: 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 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] 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, }; [L51-L53] 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; [L139] float x = -0.0f; [L140] CALL, EXPR atan_float(x) [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff [L65] COND TRUE ix >= 0x50800000 [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; [L140] RET, EXPR atan_float(x) [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L144] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 56 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 58 mSDtfsCounter, 64 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=54occurred 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 [2022-01-31 23:01:17,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...