/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:03,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:03,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:03,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:03,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:03,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:03,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:03,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:03,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:03,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:03,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:03,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:03,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:03,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:03,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:03,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:03,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:03,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:03,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:03,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:03,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:03,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:03,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:03,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:03,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:03,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:03,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:03,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:03,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:25:03,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:03,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:03,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:03,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:03,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:03,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:03,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:03,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:03,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:03,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:03,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:03,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:03,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:03,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:03,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:03,985 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:03,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:03,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:03,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:03,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:03,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:03,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:03,986 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:04,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:04,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:04,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:04,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:04,448 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:04,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-10-23 20:25:04,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f48d8d9/9d6f85cb289c471eb8590462f6c10304/FLAG8269ae798 [2020-10-23 20:25:05,181 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:05,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-10-23 20:25:05,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f48d8d9/9d6f85cb289c471eb8590462f6c10304/FLAG8269ae798 [2020-10-23 20:25:05,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f48d8d9/9d6f85cb289c471eb8590462f6c10304 [2020-10-23 20:25:05,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:05,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:05,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:05,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:05,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:05,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:05" (1/1) ... [2020-10-23 20:25:05,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b15775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:05, skipping insertion in model container [2020-10-23 20:25:05,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:05" (1/1) ... [2020-10-23 20:25:05,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:05,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:05,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:05,828 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:05,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:05,892 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:05,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:05 WrapperNode [2020-10-23 20:25:05,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:05,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:05,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:05,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:05,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:05" (1/1) ... [2020-10-23 20:25:05,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:05" (1/1) ... [2020-10-23 20:25:05,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:05" (1/1) ... [2020-10-23 20:25:05,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:05" (1/1) ... [2020-10-23 20:25:05,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:05" (1/1) ... [2020-10-23 20:25:05,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:05" (1/1) ... [2020-10-23 20:25:05,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:05" (1/1) ... [2020-10-23 20:25:05,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:05,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:05,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:05,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:05,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:05" (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 [2020-10-23 20:25:06,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:06,054 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:06,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 20:25:06,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-23 20:25:06,055 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-23 20:25:06,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:06,055 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-23 20:25:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 20:25:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-23 20:25:06,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:25:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:06,057 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-23 20:25:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:06,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:06,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:25:06,604 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:06,604 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 20:25:06,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:06 BoogieIcfgContainer [2020-10-23 20:25:06,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:06,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:06,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:06,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:06,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:05" (1/3) ... [2020-10-23 20:25:06,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518d30a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:06, skipping insertion in model container [2020-10-23 20:25:06,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:05" (2/3) ... [2020-10-23 20:25:06,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518d30a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:06, skipping insertion in model container [2020-10-23 20:25:06,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:06" (3/3) ... [2020-10-23 20:25:06,615 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-10-23 20:25:06,627 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:06,631 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:06,644 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:06,667 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:06,667 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:06,668 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:06,668 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:06,668 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:06,668 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:06,668 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:06,668 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:06,686 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-23 20:25:06,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-23 20:25:06,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:06,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:06,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:06,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:06,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1864280971, now seen corresponding path program 1 times [2020-10-23 20:25:06,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:06,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109200830] [2020-10-23 20:25:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:06,785 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:07,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:25:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 20:25:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:07,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:25:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:07,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109200830] [2020-10-23 20:25:07,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:07,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:07,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970414212] [2020-10-23 20:25:07,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:07,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:07,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:07,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:07,101 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-10-23 20:25:07,339 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-23 20:25:07,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:07,622 INFO L93 Difference]: Finished difference Result 150 states and 173 transitions. [2020-10-23 20:25:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:07,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-23 20:25:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:07,635 INFO L225 Difference]: With dead ends: 150 [2020-10-23 20:25:07,635 INFO L226 Difference]: Without dead ends: 80 [2020-10-23 20:25:07,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:25:07,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-23 20:25:07,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-23 20:25:07,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-23 20:25:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2020-10-23 20:25:07,709 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 46 [2020-10-23 20:25:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:07,710 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2020-10-23 20:25:07,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:07,710 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2020-10-23 20:25:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-23 20:25:07,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:07,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:07,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:07,718 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:07,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:07,720 INFO L82 PathProgramCache]: Analyzing trace with hash -751884555, now seen corresponding path program 1 times [2020-10-23 20:25:07,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:07,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973833694] [2020-10-23 20:25:07,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:07,729 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:07,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:25:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 20:25:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:08,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:25:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:08,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973833694] [2020-10-23 20:25:08,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:08,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:25:08,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195322628] [2020-10-23 20:25:08,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:25:08,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:08,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:25:08,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:25:08,065 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 6 states. [2020-10-23 20:25:08,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:08,367 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2020-10-23 20:25:08,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:25:08,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-23 20:25:08,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:08,375 INFO L225 Difference]: With dead ends: 95 [2020-10-23 20:25:08,375 INFO L226 Difference]: Without dead ends: 85 [2020-10-23 20:25:08,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:25:08,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-23 20:25:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2020-10-23 20:25:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-23 20:25:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-10-23 20:25:08,419 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 60 [2020-10-23 20:25:08,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:08,420 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-10-23 20:25:08,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:25:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-10-23 20:25:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-23 20:25:08,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:08,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:08,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:08,425 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:08,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:08,427 INFO L82 PathProgramCache]: Analyzing trace with hash 555272722, now seen corresponding path program 1 times [2020-10-23 20:25:08,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:08,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138964691] [2020-10-23 20:25:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:08,433 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:08,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:25:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:08,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 20:25:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:08,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:25:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:08,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138964691] [2020-10-23 20:25:08,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:08,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:25:08,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507204175] [2020-10-23 20:25:08,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:25:08,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:08,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:25:08,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:25:08,605 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 6 states. [2020-10-23 20:25:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:08,920 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2020-10-23 20:25:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:25:08,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-23 20:25:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:08,923 INFO L225 Difference]: With dead ends: 99 [2020-10-23 20:25:08,923 INFO L226 Difference]: Without dead ends: 89 [2020-10-23 20:25:08,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:25:08,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-23 20:25:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2020-10-23 20:25:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-23 20:25:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-10-23 20:25:08,942 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 63 [2020-10-23 20:25:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:08,943 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-10-23 20:25:08,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:25:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-10-23 20:25:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-23 20:25:08,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:08,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:08,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:25:08,946 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:08,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1735708206, now seen corresponding path program 1 times [2020-10-23 20:25:08,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:08,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985548598] [2020-10-23 20:25:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:08,950 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:08,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:09,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:09,053 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:09,053 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:09,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:25:09,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:09 BoogieIcfgContainer [2020-10-23 20:25:09,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:09,083 INFO L168 Benchmark]: Toolchain (without parser) took 3513.70 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.3 MB in the beginning and 122.0 MB in the end (delta: 5.3 MB). Peak memory consumption was 37.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:09,084 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:09,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.74 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:09,087 INFO L168 Benchmark]: Boogie Preprocessor took 48.25 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:09,089 INFO L168 Benchmark]: RCFGBuilder took 663.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 126.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:09,092 INFO L168 Benchmark]: TraceAbstraction took 2471.54 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.9 MB in the beginning and 122.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 34.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:09,101 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 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 314.74 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.25 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 663.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 126.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2471.54 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.9 MB in the beginning and 122.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 34.3 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 someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L66] double x = __VERIFIER_nondet_double(); [L67] double y = 0.0 / 0.0; [L74] CALL, EXPR isnan_double(x) [L18] return x != x; [L74] RET, EXPR isnan_double(x) [L74] COND TRUE !isnan_double(x) [L76] CALL, EXPR fmax_double(x, y) [L57] CALL, EXPR __fpclassify_double(x) [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] RET, EXPR __fpclassify_double(x) [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L76] RET, EXPR fmax_double(x, y) [L76] double res = fmax_double(x, y); [L79] COND TRUE res != x [L80] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1251b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 261 SDtfs, 103 SDslu, 412 SDs, 0 SdLazy, 356 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...