/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:18,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:18,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:18,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:18,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:18,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:18,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:18,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:18,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:18,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:18,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:18,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:46:18,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:18,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:18,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:18,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:18,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:18,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:18,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:18,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:18,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:18,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:18,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:18,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:18,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 03:46:18,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 03:46:18,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 03:46:18,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 03:46:18,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 03:46:18,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 03:46:18,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 03:46:18,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 03:46:18,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 03:46:18,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 03:46:18,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 03:46:18,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 03:46:18,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 03:46:18,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 03:46:18,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:18,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:18,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:18,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:18,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:18,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:18,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:18,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:18,759 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:18,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:18,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:18,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:18,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:18,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:18,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:18,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:18,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:18,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:18,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:18,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:18,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:18,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:18,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:18,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:18,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:18,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:18,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:18,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:18,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:18,764 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:19,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:19,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:19,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:19,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:19,181 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:19,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2020-12-22 03:46:19,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc11ca3d8/913ae8dd2d624101bd53ff0abc3452a7/FLAG222cee9f1 [2020-12-22 03:46:19,846 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:19,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2020-12-22 03:46:19,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc11ca3d8/913ae8dd2d624101bd53ff0abc3452a7/FLAG222cee9f1 [2020-12-22 03:46:20,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc11ca3d8/913ae8dd2d624101bd53ff0abc3452a7 [2020-12-22 03:46:20,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:20,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:20,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:20,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:20,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:20,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9c9884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20, skipping insertion in model container [2020-12-22 03:46:20,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:20,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:20,609 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2020-12-22 03:46:20,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:20,622 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:20,694 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2020-12-22 03:46:20,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:20,720 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:20,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20 WrapperNode [2020-12-22 03:46:20,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:20,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:20,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:20,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:20,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:20,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:20,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:20,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:20,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:20,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:20,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:20,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:20,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (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 [2020-12-22 03:46:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:21,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:21,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:21,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:21,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:21,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:21,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:21,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:21,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-22 03:46:21,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:21,794 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:21,795 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 03:46:21,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:21 BoogieIcfgContainer [2020-12-22 03:46:21,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:21,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:21,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:21,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:21,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:20" (1/3) ... [2020-12-22 03:46:21,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a8b12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:21, skipping insertion in model container [2020-12-22 03:46:21,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (2/3) ... [2020-12-22 03:46:21,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a8b12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:21, skipping insertion in model container [2020-12-22 03:46:21,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:21" (3/3) ... [2020-12-22 03:46:21,807 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2020-12-22 03:46:21,820 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:21,825 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:21,847 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:21,878 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:21,878 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:21,878 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:21,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:21,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:21,879 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:21,879 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:21,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-12-22 03:46:21,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:46:21,902 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:21,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:21,903 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:21,910 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-12-22 03:46:21,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:21,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787140683] [2020-12-22 03:46:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:22,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787140683] [2020-12-22 03:46:22,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:22,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:22,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736724140] [2020-12-22 03:46:22,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:22,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:22,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:22,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:22,106 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-12-22 03:46:22,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:22,133 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2020-12-22 03:46:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:22,135 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 03:46:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:22,146 INFO L225 Difference]: With dead ends: 108 [2020-12-22 03:46:22,146 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 03:46:22,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:22,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 03:46:22,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-22 03:46:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 03:46:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-12-22 03:46:22,193 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-12-22 03:46:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:22,193 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-12-22 03:46:22,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-12-22 03:46:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:46:22,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:22,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:22,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:22,195 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:22,196 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-12-22 03:46:22,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:22,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429035215] [2020-12-22 03:46:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:22,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:22,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:22,425 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:22,425 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:22,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:22,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:22 BoogieIcfgContainer [2020-12-22 03:46:22,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:22,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:22,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:22,486 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:22,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:21" (3/4) ... [2020-12-22 03:46:22,491 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:22,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:22,496 INFO L168 Benchmark]: Toolchain (without parser) took 2290.88 ms. Allocated memory is still 161.5 MB. Free memory was 136.9 MB in the beginning and 105.5 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,497 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 161.5 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:22,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 512.08 ms. Allocated memory is still 161.5 MB. Free memory was 136.7 MB in the beginning and 123.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.93 ms. Allocated memory is still 161.5 MB. Free memory was 123.5 MB in the beginning and 121.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,501 INFO L168 Benchmark]: Boogie Preprocessor took 93.41 ms. Allocated memory is still 161.5 MB. Free memory was 121.2 MB in the beginning and 119.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,502 INFO L168 Benchmark]: RCFGBuilder took 873.60 ms. Allocated memory is still 161.5 MB. Free memory was 119.1 MB in the beginning and 132.8 MB in the end (delta: -13.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,504 INFO L168 Benchmark]: TraceAbstraction took 685.88 ms. Allocated memory is still 161.5 MB. Free memory was 132.8 MB in the beginning and 106.0 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:22,506 INFO L168 Benchmark]: Witness Printer took 5.03 ms. Allocated memory is still 161.5 MB. Free memory was 106.0 MB in the beginning and 105.5 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:22,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 161.5 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 512.08 ms. Allocated memory is still 161.5 MB. Free memory was 136.7 MB in the beginning and 123.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 98.93 ms. Allocated memory is still 161.5 MB. Free memory was 123.5 MB in the beginning and 121.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.41 ms. Allocated memory is still 161.5 MB. Free memory was 121.2 MB in the beginning and 119.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 873.60 ms. Allocated memory is still 161.5 MB. Free memory was 119.1 MB in the beginning and 132.8 MB in the end (delta: -13.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 685.88 ms. Allocated memory is still 161.5 MB. Free memory was 132.8 MB in the beginning and 106.0 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Witness Printer took 5.03 ms. Allocated memory is still 161.5 MB. Free memory was 106.0 MB in the beginning and 105.5 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 178]: 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 someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L172] double x = -1.0 / 0.0; [L173] double y = __VERIFIER_nondet_double(); [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [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 VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L174] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L177] COND TRUE !isnan_double(res) [L178] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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...