/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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:24:16,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:24:16,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:24:16,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:24:16,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:24:16,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:24:16,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:24:16,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:24:16,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:24:16,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:24:16,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:24:16,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:24:16,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:24:16,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:24:16,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:24:16,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:24:16,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:24:16,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:24:16,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:24:16,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:24:16,887 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 00:24:16,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:24:16,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:24:16,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:24:16,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:24:16,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:24:16,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:24:16,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:24:16,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:24:16,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:24:16,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:24:16,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:24:16,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:24:16,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:24:16,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:24:16,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:24:16,921 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:24:16,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:24:16,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:24:16,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:24:16,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:24:16,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:24:16,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:24:16,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:24:17,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:24:17,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:24:17,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:24:17,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:24:17,372 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:24:17,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-11-07 00:24:17,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d2ebdc9/06970f5b205d4d1ca9f461183275405f/FLAG6b308bcf4 [2020-11-07 00:24:18,239 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:24:18,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-11-07 00:24:18,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d2ebdc9/06970f5b205d4d1ca9f461183275405f/FLAG6b308bcf4 [2020-11-07 00:24:18,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d2ebdc9/06970f5b205d4d1ca9f461183275405f [2020-11-07 00:24:18,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:24:18,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:24:18,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:18,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:24:18,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:24:18,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:18" (1/1) ... [2020-11-07 00:24:18,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7386c9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:18, skipping insertion in model container [2020-11-07 00:24:18,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:18" (1/1) ... [2020-11-07 00:24:18,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:24:18,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:24:18,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:18,828 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:24:18,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:18,884 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:24:18,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:18 WrapperNode [2020-11-07 00:24:18,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:18,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:24:18,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:24:18,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:24:18,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:18" (1/1) ... [2020-11-07 00:24:18,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:18" (1/1) ... [2020-11-07 00:24:18,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:18" (1/1) ... [2020-11-07 00:24:18,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:18" (1/1) ... [2020-11-07 00:24:18,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:18" (1/1) ... [2020-11-07 00:24:18,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:18" (1/1) ... [2020-11-07 00:24:18,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:18" (1/1) ... [2020-11-07 00:24:18,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:24:18,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:24:18,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:24:18,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:24:18,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:18" (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 [2020-11-07 00:24:19,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:24:19,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:24:19,050 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:24:19,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-07 00:24:19,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-11-07 00:24:19,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:24:19,051 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:24:19,051 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:24:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:24:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:24:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-07 00:24:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-11-07 00:24:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:24:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:24:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:24:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:24:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:24:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:24:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:24:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:24:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:24:19,550 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:24:19,550 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 00:24:19,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:19 BoogieIcfgContainer [2020-11-07 00:24:19,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:24:19,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:24:19,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:24:19,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:24:19,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:24:18" (1/3) ... [2020-11-07 00:24:19,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdb9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:19, skipping insertion in model container [2020-11-07 00:24:19,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:18" (2/3) ... [2020-11-07 00:24:19,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdb9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:19, skipping insertion in model container [2020-11-07 00:24:19,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:19" (3/3) ... [2020-11-07 00:24:19,562 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-11-07 00:24:19,579 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:24:19,583 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:24:19,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:24:19,624 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:24:19,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:24:19,625 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:24:19,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:24:19,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:24:19,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:24:19,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:24:19,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:24:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-11-07 00:24:19,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-07 00:24:19,657 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:19,658 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] [2020-11-07 00:24:19,659 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:19,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:19,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1977079123, now seen corresponding path program 1 times [2020-11-07 00:24:19,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:19,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830951869] [2020-11-07 00:24:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:19,747 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:19,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:24:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:20,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:24:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:20,043 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 00:24:20,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830951869] [2020-11-07 00:24:20,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:24:20,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:24:20,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324772384] [2020-11-07 00:24:20,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:24:20,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:24:20,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:24:20,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:24:20,071 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 4 states. [2020-11-07 00:24:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:24:20,461 INFO L93 Difference]: Finished difference Result 174 states and 213 transitions. [2020-11-07 00:24:20,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:24:20,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-11-07 00:24:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:24:20,474 INFO L225 Difference]: With dead ends: 174 [2020-11-07 00:24:20,474 INFO L226 Difference]: Without dead ends: 91 [2020-11-07 00:24:20,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:24:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-07 00:24:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-11-07 00:24:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 00:24:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2020-11-07 00:24:20,536 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 34 [2020-11-07 00:24:20,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:24:20,537 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2020-11-07 00:24:20,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:24:20,537 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2020-11-07 00:24:20,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 00:24:20,539 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:20,540 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] [2020-11-07 00:24:20,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:24:20,540 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:20,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:20,541 INFO L82 PathProgramCache]: Analyzing trace with hash -2916765, now seen corresponding path program 1 times [2020-11-07 00:24:20,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:20,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020604534] [2020-11-07 00:24:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:20,546 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:20,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:20,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:20,742 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:24:20,742 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:24:20,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:24:20,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:24:20 BoogieIcfgContainer [2020-11-07 00:24:20,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:24:20,766 INFO L168 Benchmark]: Toolchain (without parser) took 2168.96 ms. Allocated memory is still 154.1 MB. Free memory was 130.2 MB in the beginning and 113.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:20,767 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory was 128.2 MB in the beginning and 128.1 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:24:20,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.67 ms. Allocated memory is still 154.1 MB. Free memory was 129.6 MB in the beginning and 119.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:20,769 INFO L168 Benchmark]: Boogie Preprocessor took 77.46 ms. Allocated memory is still 154.1 MB. Free memory was 119.0 MB in the beginning and 117.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:20,770 INFO L168 Benchmark]: RCFGBuilder took 588.08 ms. Allocated memory is still 154.1 MB. Free memory was 117.1 MB in the beginning and 121.4 MB in the end (delta: -4.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:20,771 INFO L168 Benchmark]: TraceAbstraction took 1209.18 ms. Allocated memory is still 154.1 MB. Free memory was 120.9 MB in the beginning and 113.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:20,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory was 128.2 MB in the beginning and 128.1 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.67 ms. Allocated memory is still 154.1 MB. Free memory was 129.6 MB in the beginning and 119.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.46 ms. Allocated memory is still 154.1 MB. Free memory was 119.0 MB in the beginning and 117.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 588.08 ms. Allocated memory is still 154.1 MB. Free memory was 117.1 MB in the beginning and 121.4 MB in the end (delta: -4.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1209.18 ms. Allocated memory is still 154.1 MB. Free memory was 120.9 MB in the beginning and 113.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 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 97, overapproximation of someUnaryDOUBLEoperation at line 93, overapproximation of bitwiseAnd at line 30. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; [L93] double x = -0.0; [L94] CALL, EXPR ceil_double(x) [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L31] COND FALSE !(j0 < 20) [L53] COND TRUE j0 > 51 [L54] COND FALSE !(j0 == 0x400) [L57] return x; [L94] RET, EXPR ceil_double(x) [L94] double res = ceil_double(x); [L97] COND TRUE res != x [L98] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1092a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 17 SDslu, 78 SDs, 0 SdLazy, 119 SolverSat, 6 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred 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: 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...