/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:44:21,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:44:21,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:44:21,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:44:21,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:44:21,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:44:21,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:44:21,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:44:21,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:44:21,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:44:21,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:44:21,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:44:21,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:44:21,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:44:21,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:44:21,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:44:21,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:44:21,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:44:21,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:44:21,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:44:21,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:44:21,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:44:21,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:44:21,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:44:21,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:44:22,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:44:22,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:44:22,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:44:22,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 04:44:22,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:44:22,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:44:22,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:44:22,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:44:22,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:44:22,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:44:22,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:44:22,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:44:22,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:44:22,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:44:22,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:44:22,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:44:22,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:44:22,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:44:22,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:44:22,045 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:44:22,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:44:22,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:44:22,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:44:22,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:44:22,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:44:22,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:44:22,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:44:22,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:44:22,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:44:22,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:44:22,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:44:22,472 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:44:22,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-11-07 04:44:22,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72611824f/6756d67c565c4d0aa4fe8c7edbdacbc4/FLAG242d8d05e [2020-11-07 04:44:23,235 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:44:23,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-11-07 04:44:23,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72611824f/6756d67c565c4d0aa4fe8c7edbdacbc4/FLAG242d8d05e [2020-11-07 04:44:23,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72611824f/6756d67c565c4d0aa4fe8c7edbdacbc4 [2020-11-07 04:44:23,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:44:23,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:44:23,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:44:23,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:44:23,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:44:23,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:44:23" (1/1) ... [2020-11-07 04:44:23,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d667cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:23, skipping insertion in model container [2020-11-07 04:44:23,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:44:23" (1/1) ... [2020-11-07 04:44:23,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:44:23,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:44:23,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:44:23,981 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:44:24,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:44:24,055 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:44:24,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:24 WrapperNode [2020-11-07 04:44:24,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:44:24,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:44:24,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:44:24,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:44:24,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:24" (1/1) ... [2020-11-07 04:44:24,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:24" (1/1) ... [2020-11-07 04:44:24,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:24" (1/1) ... [2020-11-07 04:44:24,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:24" (1/1) ... [2020-11-07 04:44:24,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:24" (1/1) ... [2020-11-07 04:44:24,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:24" (1/1) ... [2020-11-07 04:44:24,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:24" (1/1) ... [2020-11-07 04:44:24,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:44:24,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:44:24,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:44:24,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:44:24,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:24" (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 [2020-11-07 04:44:24,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:44:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:44:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:44:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-11-07 04:44:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-11-07 04:44:24,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:44:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:44:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:44:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:44:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:44:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-11-07 04:44:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-11-07 04:44:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 04:44:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:44:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:44:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:44:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 04:44:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-11-07 04:44:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:44:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:44:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:44:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:44:24,886 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:44:24,886 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-07 04:44:24,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:44:24 BoogieIcfgContainer [2020-11-07 04:44:24,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:44:24,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:44:24,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:44:24,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:44:24,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:44:23" (1/3) ... [2020-11-07 04:44:24,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71025b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:44:24, skipping insertion in model container [2020-11-07 04:44:24,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:24" (2/3) ... [2020-11-07 04:44:24,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71025b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:44:24, skipping insertion in model container [2020-11-07 04:44:24,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:44:24" (3/3) ... [2020-11-07 04:44:24,899 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-11-07 04:44:24,920 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:44:24,926 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:44:24,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:44:25,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:44:25,014 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:44:25,014 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:44:25,014 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:44:25,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:44:25,015 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:44:25,015 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:44:25,015 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:44:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-11-07 04:44:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-07 04:44:25,051 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:44:25,052 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] [2020-11-07 04:44:25,053 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:44:25,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:44:25,059 INFO L82 PathProgramCache]: Analyzing trace with hash 499020979, now seen corresponding path program 1 times [2020-11-07 04:44:25,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:44:25,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124815291] [2020-11-07 04:44:25,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:44:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:44:25,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:44:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:44:25,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 04:44:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:44:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:44:25,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124815291] [2020-11-07 04:44:25,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:44:25,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 04:44:25,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931848394] [2020-11-07 04:44:25,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 04:44:25,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:44:25,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 04:44:25,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 04:44:25,449 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 4 states. [2020-11-07 04:44:25,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:44:25,942 INFO L93 Difference]: Finished difference Result 317 states and 381 transitions. [2020-11-07 04:44:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 04:44:25,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-11-07 04:44:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:44:25,956 INFO L225 Difference]: With dead ends: 317 [2020-11-07 04:44:25,956 INFO L226 Difference]: Without dead ends: 165 [2020-11-07 04:44:25,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 04:44:25,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-11-07 04:44:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-11-07 04:44:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-07 04:44:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 185 transitions. [2020-11-07 04:44:26,028 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 185 transitions. Word has length 44 [2020-11-07 04:44:26,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:44:26,031 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 185 transitions. [2020-11-07 04:44:26,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 04:44:26,031 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 185 transitions. [2020-11-07 04:44:26,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-07 04:44:26,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:44:26,035 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] [2020-11-07 04:44:26,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:44:26,036 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:44:26,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:44:26,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1824286621, now seen corresponding path program 1 times [2020-11-07 04:44:26,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:44:26,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061354803] [2020-11-07 04:44:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:44:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:44:26,136 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:44:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:44:26,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:44:26,222 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 04:44:26,222 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 04:44:26,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:44:26,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:44:26 BoogieIcfgContainer [2020-11-07 04:44:26,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:44:26,277 INFO L168 Benchmark]: Toolchain (without parser) took 2687.42 ms. Allocated memory is still 166.7 MB. Free memory was 142.8 MB in the beginning and 117.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:26,278 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 103.1 MB in the end (delta: 62.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:44:26,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.19 ms. Allocated memory is still 166.7 MB. Free memory was 142.1 MB in the beginning and 129.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:26,280 INFO L168 Benchmark]: Boogie Preprocessor took 107.09 ms. Allocated memory is still 166.7 MB. Free memory was 129.8 MB in the beginning and 127.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:26,281 INFO L168 Benchmark]: RCFGBuilder took 722.98 ms. Allocated memory is still 166.7 MB. Free memory was 127.5 MB in the beginning and 117.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:26,282 INFO L168 Benchmark]: TraceAbstraction took 1383.99 ms. Allocated memory is still 166.7 MB. Free memory was 116.6 MB in the beginning and 117.6 MB in the end (delta: -972.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:44:26,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 103.1 MB in the end (delta: 62.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 462.19 ms. Allocated memory is still 166.7 MB. Free memory was 142.1 MB in the beginning and 129.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 107.09 ms. Allocated memory is still 166.7 MB. Free memory was 129.8 MB in the beginning and 127.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 722.98 ms. Allocated memory is still 166.7 MB. Free memory was 127.5 MB in the beginning and 117.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1383.99 ms. Allocated memory is still 166.7 MB. Free memory was 116.6 MB in the beginning and 117.6 MB in the end (delta: -972.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 151, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [\old(one_sqrt)=4294967300, \old(tiny_sqrt)=4294967309, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = -0.0; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] CALL, EXPR __ieee754_sqrt(x) VAL [\old(x)=4294967306, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] double z; VAL [\old(x)=4294967306, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L23] __int32_t sign = 0x80000000; VAL [\old(x)=4294967306, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L24] __uint32_t r, t1, s1, ix1, q1; VAL [\old(x)=4294967306, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L25] __int32_t ix0, s0, q, m, t, i; VAL [\old(x)=4294967306, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L28] ieee_double_shape_type ew_u; VAL [\old(x)=4294967306, ew_u={3:0}, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L29] ew_u.value = (x) VAL [\old(x)=4294967306, ew_u={3:0}, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L30] EXPR ew_u.parts.msw VAL [\old(x)=4294967306, ew_u={3:0}, ew_u.parts.msw=4294967295, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L30] (ix0) = ew_u.parts.msw VAL [(ix0) = ew_u.parts.msw=4294967308, \old(x)=4294967306, ew_u={3:0}, ew_u.parts.msw=4294967295, ix0=-1, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L31] EXPR ew_u.parts.lsw VAL [\old(x)=4294967306, ew_u={3:0}, ew_u.parts.lsw=4294967311, ix0=-1, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L31] (ix1) = ew_u.parts.lsw VAL [(ix1) = ew_u.parts.lsw=4294967297, \old(x)=4294967306, ew_u={3:0}, ew_u.parts.lsw=4294967311, ix0=-1, ix1=4294967311, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 VAL [\old(x)=4294967306, ix0=-1, ix1=4294967311, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L35] return x * x + x; VAL [\old(x)=4294967306, ix0=-1, ix1=4294967311, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L152] RET, EXPR __ieee754_sqrt(x) VAL [__ieee754_sqrt(x)=4294967299, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L152] double res = __ieee754_sqrt(x); VAL [__ieee754_sqrt(x)=4294967299, one_sqrt=1, res=4294967299, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, res=4294967299, res == -0.0 && __signbit_double(res) == 1=0, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) VAL [one_sqrt=1, res=4294967299, res == -0.0 && __signbit_double(res) == 1=0, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967306] [L156] CALL reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 189 SDtfs, 37 SDslu, 144 SDs, 0 SdLazy, 196 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175occurred 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, 0.1s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 3913 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...