/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0620a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:25:43,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:25:43,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:25:43,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:25:43,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:25:43,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:25:43,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:25:43,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:25:43,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:25:43,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:25:43,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:25:43,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:25:43,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:25:43,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:25:43,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:25:43,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:25:43,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:25:43,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:25:43,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:25:43,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:25:43,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:25:43,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:25:43,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:25:43,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:25:43,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:25:43,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:25:43,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:25:43,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:25:43,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:25:43,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:25:43,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:25:43,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:25:43,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:25:43,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:25:43,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:25:43,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:25:43,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:25:43,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:25:43,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:25:43,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:25:43,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:25:43,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:25:43,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:25:43,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:25:43,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:25:43,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:25:43,699 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:25:43,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:25:43,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:25:43,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:25:43,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:25:43,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:25:43,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:25:43,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:25:43,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:25:43,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:25:43,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:25:43,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:25:43,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:25:43,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:25:43,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:25:43,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:25:43,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:25:43,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:25:43,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:25:43,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:25:43,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:25:43,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:25:43,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:25:43,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:25:43,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:25:43,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:25:44,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:25:44,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:25:44,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:25:44,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:25:44,111 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:25:44,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0620a.c [2020-10-28 14:25:44,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9aa63e56/fb19ff5ae57043ae93b9a500c06a2820/FLAG0ca4bc46a [2020-10-28 14:25:44,896 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:25:44,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0620a.c [2020-10-28 14:25:44,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9aa63e56/fb19ff5ae57043ae93b9a500c06a2820/FLAG0ca4bc46a [2020-10-28 14:25:45,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9aa63e56/fb19ff5ae57043ae93b9a500c06a2820 [2020-10-28 14:25:45,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:25:45,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:25:45,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:25:45,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:25:45,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:25:45,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:25:45" (1/1) ... [2020-10-28 14:25:45,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189ff166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:45, skipping insertion in model container [2020-10-28 14:25:45,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:25:45" (1/1) ... [2020-10-28 14:25:45,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:25:45,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:25:45,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:25:45,534 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:25:45,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:25:45,632 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:25:45,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:45 WrapperNode [2020-10-28 14:25:45,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:25:45,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:25:45,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:25:45,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:25:45,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:45" (1/1) ... [2020-10-28 14:25:45,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:45" (1/1) ... [2020-10-28 14:25:45,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:45" (1/1) ... [2020-10-28 14:25:45,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:45" (1/1) ... [2020-10-28 14:25:45,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:45" (1/1) ... [2020-10-28 14:25:45,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:45" (1/1) ... [2020-10-28 14:25:45,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:45" (1/1) ... [2020-10-28 14:25:45,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:25:45,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:25:45,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:25:45,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:25:45,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-28 14:25:45,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:25:45,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:25:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:25:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-28 14:25:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-28 14:25:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-28 14:25:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:25:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:25:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:25:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:25:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:25:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:25:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-28 14:25:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:25:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:25:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:25:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:25:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:25:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-28 14:25:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-28 14:25:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:25:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:25:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:25:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:25:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:25:46,454 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:25:46,454 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-28 14:25:46,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:25:46 BoogieIcfgContainer [2020-10-28 14:25:46,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:25:46,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:25:46,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:25:46,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:25:46,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:25:45" (1/3) ... [2020-10-28 14:25:46,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c619e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:25:46, skipping insertion in model container [2020-10-28 14:25:46,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:25:45" (2/3) ... [2020-10-28 14:25:46,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c619e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:25:46, skipping insertion in model container [2020-10-28 14:25:46,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:25:46" (3/3) ... [2020-10-28 14:25:46,466 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0620a.c [2020-10-28 14:25:46,480 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:25:46,486 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:25:46,501 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:25:46,532 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:25:46,533 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:25:46,533 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:25:46,533 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:25:46,533 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:25:46,534 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:25:46,534 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:25:46,534 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:25:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-28 14:25:46,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:25:46,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:25:46,561 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] [2020-10-28 14:25:46,562 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:25:46,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:25:46,569 INFO L82 PathProgramCache]: Analyzing trace with hash -146566981, now seen corresponding path program 1 times [2020-10-28 14:25:46,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:25:46,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637195744] [2020-10-28 14:25:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:25:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:25:46,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:47,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:47,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:25:47,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:25:47,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:25:47,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-28 14:25:47,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:25:47,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:25:47,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:25:47,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 14:25:47,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:25:47,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:25:47,479 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:25:47,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:25:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:25:47,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:47,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:25:47,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:25:47,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:25:47,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 14:25:47,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:25:47,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:25:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:25:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:25:47,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:25:47,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:25:47,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:25:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:25:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:25:47,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:25:47,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:25:47,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:25:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:25:47,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:25:47,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:25:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:25:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 14:25:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:25:47,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:25:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:25:47,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637195744] [2020-10-28 14:25:47,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:25:47,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:25:47,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015893492] [2020-10-28 14:25:47,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:25:47,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:25:47,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:25:47,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:25:47,660 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-10-28 14:25:47,811 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 14:25:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:25:48,097 INFO L93 Difference]: Finished difference Result 109 states and 156 transitions. [2020-10-28 14:25:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:25:48,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-28 14:25:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:25:48,109 INFO L225 Difference]: With dead ends: 109 [2020-10-28 14:25:48,110 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 14:25:48,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:25:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 14:25:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-28 14:25:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 14:25:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-28 14:25:48,164 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 20 [2020-10-28 14:25:48,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:25:48,165 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-28 14:25:48,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:25:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-28 14:25:48,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:25:48,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:25:48,167 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] [2020-10-28 14:25:48,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:25:48,167 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:25:48,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:25:48,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1650187271, now seen corresponding path program 1 times [2020-10-28 14:25:48,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:25:48,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006424193] [2020-10-28 14:25:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:25:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:25:48,224 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:25:48,224 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:25:48,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:25:48,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:25:48 BoogieIcfgContainer [2020-10-28 14:25:48,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:25:48,250 INFO L168 Benchmark]: Toolchain (without parser) took 2993.11 ms. Allocated memory is still 156.2 MB. Free memory was 138.8 MB in the beginning and 70.8 MB in the end (delta: 68.0 MB). Peak memory consumption was 67.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:25:48,251 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 156.2 MB. Free memory was 129.2 MB in the beginning and 129.1 MB in the end (delta: 76.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:25:48,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.42 ms. Allocated memory is still 156.2 MB. Free memory was 138.3 MB in the beginning and 125.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:25:48,253 INFO L168 Benchmark]: Boogie Preprocessor took 119.81 ms. Allocated memory is still 156.2 MB. Free memory was 125.4 MB in the beginning and 137.6 MB in the end (delta: -12.2 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:25:48,254 INFO L168 Benchmark]: RCFGBuilder took 700.33 ms. Allocated memory is still 156.2 MB. Free memory was 137.6 MB in the beginning and 110.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:25:48,255 INFO L168 Benchmark]: TraceAbstraction took 1789.88 ms. Allocated memory is still 156.2 MB. Free memory was 109.3 MB in the beginning and 70.8 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:25:48,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 156.2 MB. Free memory was 129.2 MB in the beginning and 129.1 MB in the end (delta: 76.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 371.42 ms. Allocated memory is still 156.2 MB. Free memory was 138.3 MB in the beginning and 125.4 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 119.81 ms. Allocated memory is still 156.2 MB. Free memory was 125.4 MB in the beginning and 137.6 MB in the end (delta: -12.2 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 700.33 ms. Allocated memory is still 156.2 MB. Free memory was 137.6 MB in the beginning and 110.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1789.88 ms. Allocated memory is still 156.2 MB. Free memory was 109.3 MB in the beginning and 70.8 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 156, overapproximation of bitwiseAnd at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 84, overapproximation of someBinaryDOUBLEComparisonOperation at line 160. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L156] double x = -0.0; [L157] CALL, EXPR atan_double(x) [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff [L76] COND TRUE ix >= 0x44100000 [L77] __uint32_t low; [L79] ieee_double_shape_type gl_u; [L80] gl_u.value = (x) [L81] EXPR gl_u.parts.lsw [L81] (low) = gl_u.parts.lsw [L83] COND TRUE ix > 0x7ff00000 || (ix == 0x7ff00000 && (low != 0)) [L84] return x + x; [L157] RET, EXPR atan_double(x) [L157] double res = atan_double(x); [L160] EXPR res == -0.0 && __signbit_double(res) == 1 [L160] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L161] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0620a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 10 SDslu, 55 SDs, 0 SdLazy, 63 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1786 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...