/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:14,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:14,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:14,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:14,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:14,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:14,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:14,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:14,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:14,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:14,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:14,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:14,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:14,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:14,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:14,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:14,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:14,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:14,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:14,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:14,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:14,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:14,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:14,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:14,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:10:14,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:10:14,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:10:14,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:10:14,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:10:14,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:10:14,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:10:14,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:10:14,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:10:14,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:10:14,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:10:14,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:10:14,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:10:14,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:10:14,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:14,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:14,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:14,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:10:14,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:14,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:14,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:14,275 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:14,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:14,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:14,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:14,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:14,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:14,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:14,277 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:14,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:14,278 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:14,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:14,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:14,278 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:14,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:14,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:14,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:14,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:14,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:14,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:14,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:14,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:14,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:14,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:14,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:14,752 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:14,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2021-02-21 20:10:14,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f94ab81/bd0422f328004b26a9eae43b7042d4b7/FLAG251405a41 [2021-02-21 20:10:15,550 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:15,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2021-02-21 20:10:15,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f94ab81/bd0422f328004b26a9eae43b7042d4b7/FLAG251405a41 [2021-02-21 20:10:15,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f94ab81/bd0422f328004b26a9eae43b7042d4b7 [2021-02-21 20:10:15,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:15,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:15,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:15,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:15,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:15,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:15" (1/1) ... [2021-02-21 20:10:15,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451d7d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:15, skipping insertion in model container [2021-02-21 20:10:15,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:15" (1/1) ... [2021-02-21 20:10:15,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:15,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:16,216 WARN L226 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_1130a.c[4166,4179] [2021-02-21 20:10:16,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:16,246 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:16,317 WARN L226 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_1130a.c[4166,4179] [2021-02-21 20:10:16,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:16,338 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:16,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:16 WrapperNode [2021-02-21 20:10:16,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:16,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:16,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:16,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:16,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:16" (1/1) ... [2021-02-21 20:10:16,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:16" (1/1) ... [2021-02-21 20:10:16,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:16" (1/1) ... [2021-02-21 20:10:16,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:16" (1/1) ... [2021-02-21 20:10:16,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:16" (1/1) ... [2021-02-21 20:10:16,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:16" (1/1) ... [2021-02-21 20:10:16,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:16" (1/1) ... [2021-02-21 20:10:16,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:16,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:16,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:16,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:16,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:16,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:16,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:16,531 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:16,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 20:10:16,532 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-21 20:10:16,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 20:10:16,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:16,533 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 20:10:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 20:10:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-21 20:10:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 20:10:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-21 20:10:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:17,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:17,508 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-21 20:10:17,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:17 BoogieIcfgContainer [2021-02-21 20:10:17,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:17,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:17,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:17,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:17,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:15" (1/3) ... [2021-02-21 20:10:17,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@983e516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:17, skipping insertion in model container [2021-02-21 20:10:17,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:16" (2/3) ... [2021-02-21 20:10:17,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@983e516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:17, skipping insertion in model container [2021-02-21 20:10:17,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:17" (3/3) ... [2021-02-21 20:10:17,526 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2021-02-21 20:10:17,534 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:17,539 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:17,565 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:17,605 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:17,606 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:17,606 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:17,606 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:17,606 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:17,606 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:17,606 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:17,607 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states. [2021-02-21 20:10:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-21 20:10:17,657 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:17,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:17,658 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:17,669 INFO L82 PathProgramCache]: Analyzing trace with hash 783378974, now seen corresponding path program 1 times [2021-02-21 20:10:17,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:17,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460600290] [2021-02-21 20:10:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:17,773 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:17,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:17,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:17,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:17,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:18,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-21 20:10:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:18,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:18,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:18,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460600290] [2021-02-21 20:10:18,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:18,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:18,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390885366] [2021-02-21 20:10:18,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:18,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:18,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:18,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:18,145 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 4 states. [2021-02-21 20:10:19,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:19,071 INFO L93 Difference]: Finished difference Result 388 states and 478 transitions. [2021-02-21 20:10:19,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:19,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2021-02-21 20:10:19,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:19,091 INFO L225 Difference]: With dead ends: 388 [2021-02-21 20:10:19,092 INFO L226 Difference]: Without dead ends: 202 [2021-02-21 20:10:19,099 INFO L677 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 [2021-02-21 20:10:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-02-21 20:10:19,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-02-21 20:10:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-02-21 20:10:19,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 229 transitions. [2021-02-21 20:10:19,184 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 229 transitions. Word has length 51 [2021-02-21 20:10:19,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:19,185 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 229 transitions. [2021-02-21 20:10:19,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:19,185 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 229 transitions. [2021-02-21 20:10:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-21 20:10:19,188 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:19,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:19,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:19,189 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:19,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:19,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1917323870, now seen corresponding path program 1 times [2021-02-21 20:10:19,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:19,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192457924] [2021-02-21 20:10:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:19,194 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:19,265 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:19,325 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:19,394 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:10:19,396 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:10:19,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:10:19,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:10:19 BoogieIcfgContainer [2021-02-21 20:10:19,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:10:19,432 INFO L168 Benchmark]: Toolchain (without parser) took 3504.35 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 92.4 MB in the end (delta: 36.6 MB). Peak memory consumption was 37.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:19,434 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 153.1 MB. Free memory is still 127.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:10:19,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.81 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 114.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:19,439 INFO L168 Benchmark]: Boogie Preprocessor took 70.98 ms. Allocated memory is still 153.1 MB. Free memory was 114.2 MB in the beginning and 111.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:19,440 INFO L168 Benchmark]: RCFGBuilder took 1100.49 ms. Allocated memory is still 153.1 MB. Free memory was 111.8 MB in the beginning and 132.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 46.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:19,441 INFO L168 Benchmark]: TraceAbstraction took 1909.59 ms. Allocated memory is still 153.1 MB. Free memory was 131.5 MB in the beginning and 92.4 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:19,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 153.1 MB. Free memory is still 127.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 401.81 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 114.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.98 ms. Allocated memory is still 153.1 MB. Free memory was 114.2 MB in the beginning and 111.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1100.49 ms. Allocated memory is still 153.1 MB. Free memory was 111.8 MB in the beginning and 132.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 46.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1909.59 ms. Allocated memory is still 153.1 MB. Free memory was 131.5 MB in the beginning and 92.4 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 193]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L189] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L189] RET, EXPR fmod_double(x, y) [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 217 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 45 SDslu, 177 SDs, 0 SdLazy, 251 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, 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=210occurred in iteration=0, 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 Received shutdown request...