/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_1121b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:16,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:16,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:16,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:16,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:16,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:16,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:16,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:16,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:16,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:16,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:16,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:46:16,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:16,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:16,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:16,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:16,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:16,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:16,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:16,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:16,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:16,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:16,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:16,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:16,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:16,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:16,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:16,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:16,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:16,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:16,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:16,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:16,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:16,804 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:16,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:16,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:16,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:16,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:16,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:16,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:16,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:16,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:16,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:16,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:16,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:16,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:16,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:16,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:16,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:16,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:16,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:16,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:16,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:16,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:16,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:17,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:17,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:17,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:17,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:17,356 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:17,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2020-12-22 03:46:17,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d529b243/47078be590d74d6b94abed76f23b742c/FLAGaad63d0e8 [2020-12-22 03:46:18,204 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:18,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121b.c [2020-12-22 03:46:18,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d529b243/47078be590d74d6b94abed76f23b742c/FLAGaad63d0e8 [2020-12-22 03:46:18,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d529b243/47078be590d74d6b94abed76f23b742c [2020-12-22 03:46:18,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:18,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:18,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:18,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:18,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:18,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc3ce59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18, skipping insertion in model container [2020-12-22 03:46:18,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:18,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:18,797 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_1121b.c[3884,3897] [2020-12-22 03:46:18,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:18,812 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:18,862 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_1121b.c[3884,3897] [2020-12-22 03:46:18,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:18,886 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:18,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18 WrapperNode [2020-12-22 03:46:18,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:18,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:18,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:18,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:18,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:18,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:18,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:19,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:19,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:19,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:19,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:19,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:19,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:19,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:19,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:19,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:19,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:19,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:19,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:19,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (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 03:46:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:19,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-22 03:46:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:19,909 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:19,909 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 03:46:19,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:19 BoogieIcfgContainer [2020-12-22 03:46:19,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:19,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:19,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:19,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:19,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:18" (1/3) ... [2020-12-22 03:46:19,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f4a2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:19, skipping insertion in model container [2020-12-22 03:46:19,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (2/3) ... [2020-12-22 03:46:19,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f4a2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:19, skipping insertion in model container [2020-12-22 03:46:19,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:19" (3/3) ... [2020-12-22 03:46:19,923 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121b.c [2020-12-22 03:46:19,931 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:19,937 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:19,961 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:19,992 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:19,992 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:19,992 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:19,993 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:19,993 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:19,993 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:19,993 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:19,993 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:20,012 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-12-22 03:46:20,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:46:20,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:20,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:20,021 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-12-22 03:46:20,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:20,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041851155] [2020-12-22 03:46:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:20,221 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 03:46:20,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041851155] [2020-12-22 03:46:20,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:20,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:20,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193411279] [2020-12-22 03:46:20,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:20,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:20,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:20,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:20,251 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-12-22 03:46:20,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:20,281 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2020-12-22 03:46:20,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:20,283 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 03:46:20,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:20,295 INFO L225 Difference]: With dead ends: 108 [2020-12-22 03:46:20,296 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 03:46:20,299 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 03:46:20,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 03:46:20,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-22 03:46:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 03:46:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-12-22 03:46:20,345 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-12-22 03:46:20,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:20,346 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-12-22 03:46:20,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:20,346 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-12-22 03:46:20,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:46:20,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:20,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:20,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:20,348 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:20,349 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-12-22 03:46:20,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:20,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033508267] [2020-12-22 03:46:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:20,451 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:20,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:20,607 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:20,608 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:20,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:20,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:20 BoogieIcfgContainer [2020-12-22 03:46:20,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:20,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:20,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:20,680 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:20,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:19" (3/4) ... [2020-12-22 03:46:20,685 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:20,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:20,687 INFO L168 Benchmark]: Toolchain (without parser) took 2183.05 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 131.8 MB in the end (delta: -5.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:20,688 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 126.1 MB in the end (delta: 88.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:20,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.40 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 113.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:20,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.81 ms. Allocated memory is still 152.0 MB. Free memory was 113.3 MB in the beginning and 110.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:20,691 INFO L168 Benchmark]: Boogie Preprocessor took 106.89 ms. Allocated memory is still 152.0 MB. Free memory was 110.9 MB in the beginning and 108.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:20,692 INFO L168 Benchmark]: RCFGBuilder took 804.61 ms. Allocated memory is still 152.0 MB. Free memory was 108.9 MB in the beginning and 78.7 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:20,693 INFO L168 Benchmark]: TraceAbstraction took 765.10 ms. Allocated memory is still 152.0 MB. Free memory was 78.1 MB in the beginning and 131.8 MB in the end (delta: -53.7 MB). Peak memory consumption was 29.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:20,693 INFO L168 Benchmark]: Witness Printer took 5.29 ms. Allocated memory is still 152.0 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:20,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 126.1 MB in the end (delta: 88.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 383.40 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 113.3 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 107.81 ms. Allocated memory is still 152.0 MB. Free memory was 113.3 MB in the beginning and 110.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 106.89 ms. Allocated memory is still 152.0 MB. Free memory was 110.9 MB in the beginning and 108.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 804.61 ms. Allocated memory is still 152.0 MB. Free memory was 108.9 MB in the beginning and 78.7 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 765.10 ms. Allocated memory is still 152.0 MB. Free memory was 78.1 MB in the beginning and 131.8 MB in the end (delta: -53.7 MB). Peak memory consumption was 29.9 MB. Max. memory is 8.0 GB. * Witness Printer took 5.29 ms. Allocated memory is still 152.0 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 177]: 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 172, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, 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}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = -0.0; [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}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L176] COND TRUE !isnan_double(res) [L177] 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: 0.6s, 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...