/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_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:24:23,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:24:23,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:24:23,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:24:23,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:24:23,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:24:23,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:24:23,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:24:23,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:24:23,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:24:23,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:24:23,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:24:23,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:24:23,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:24:23,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:24:23,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:24:23,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:24:23,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:24:23,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:24:23,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:24:23,678 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 00:24:23,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:24:23,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:24:23,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:24:23,693 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:24:23,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:24:23,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:24:23,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:24:23,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:24:23,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:24:23,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:24:23,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:24:23,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:24:23,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:24:23,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:24:23,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:24:23,696 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:24:23,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:24:23,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:24:23,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:24:23,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:24:23,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:24:23,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:24:23,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:24:24,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:24:24,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:24:24,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:24:24,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:24:24,116 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:24:24,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-11-07 00:24:24,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/581a1f21e/5956d2361eb34f2bb29a9a14dda875ef/FLAGa78f9fcf1 [2020-11-07 00:24:24,853 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:24:24,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-11-07 00:24:24,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/581a1f21e/5956d2361eb34f2bb29a9a14dda875ef/FLAGa78f9fcf1 [2020-11-07 00:24:25,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/581a1f21e/5956d2361eb34f2bb29a9a14dda875ef [2020-11-07 00:24:25,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:24:25,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:24:25,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:25,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:24:25,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:24:25,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:25" (1/1) ... [2020-11-07 00:24:25,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a969e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:25, skipping insertion in model container [2020-11-07 00:24:25,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:25" (1/1) ... [2020-11-07 00:24:25,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:24:25,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:24:25,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:25,620 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:24:25,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:25,711 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:24:25,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:25 WrapperNode [2020-11-07 00:24:25,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:25,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:24:25,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:24:25,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:24:25,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:25" (1/1) ... [2020-11-07 00:24:25,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:25" (1/1) ... [2020-11-07 00:24:25,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:25" (1/1) ... [2020-11-07 00:24:25,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:25" (1/1) ... [2020-11-07 00:24:25,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:25" (1/1) ... [2020-11-07 00:24:25,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:25" (1/1) ... [2020-11-07 00:24:25,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:25" (1/1) ... [2020-11-07 00:24:25,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:24:25,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:24:25,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:24:25,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:24:25,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:25" (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 00:24:25,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:24:25,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:24:25,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:24:25,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-07 00:24:25,859 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-11-07 00:24:25,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:24:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:24:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:24:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:24:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:24:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-07 00:24:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-11-07 00:24:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:24:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:24:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:24:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:24:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:24:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:24:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:24:25,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:24:25,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:24:26,659 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:24:26,659 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-07 00:24:26,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:26 BoogieIcfgContainer [2020-11-07 00:24:26,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:24:26,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:24:26,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:24:26,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:24:26,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:24:25" (1/3) ... [2020-11-07 00:24:26,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251367f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:26, skipping insertion in model container [2020-11-07 00:24:26,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:25" (2/3) ... [2020-11-07 00:24:26,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251367f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:26, skipping insertion in model container [2020-11-07 00:24:26,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:26" (3/3) ... [2020-11-07 00:24:26,675 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-11-07 00:24:26,693 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:24:26,700 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:24:26,713 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:24:26,748 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:24:26,748 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:24:26,748 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:24:26,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:24:26,748 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:24:26,749 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:24:26,749 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:24:26,749 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:24:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2020-11-07 00:24:26,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 00:24:26,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:26,793 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 00:24:26,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:26,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:26,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1598378518, now seen corresponding path program 1 times [2020-11-07 00:24:26,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:26,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18727490] [2020-11-07 00:24:26,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:26,895 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:27,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:24:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:27,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 00:24:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:27,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-07 00:24:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:27,157 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 00:24:27,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18727490] [2020-11-07 00:24:27,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:24:27,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:24:27,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852820535] [2020-11-07 00:24:27,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:24:27,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:24:27,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:24:27,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:24:27,188 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 4 states. [2020-11-07 00:24:27,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:24:27,750 INFO L93 Difference]: Finished difference Result 361 states and 416 transitions. [2020-11-07 00:24:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:24:27,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-11-07 00:24:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:24:27,765 INFO L225 Difference]: With dead ends: 361 [2020-11-07 00:24:27,765 INFO L226 Difference]: Without dead ends: 178 [2020-11-07 00:24:27,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 00:24:27,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-07 00:24:27,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-11-07 00:24:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-11-07 00:24:27,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 184 transitions. [2020-11-07 00:24:27,851 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 184 transitions. Word has length 48 [2020-11-07 00:24:27,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:24:27,852 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 184 transitions. [2020-11-07 00:24:27,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:24:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 184 transitions. [2020-11-07 00:24:27,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-07 00:24:27,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:27,861 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:24:27,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:24:27,861 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:27,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:27,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2058803451, now seen corresponding path program 1 times [2020-11-07 00:24:27,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:27,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720663719] [2020-11-07 00:24:27,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:27,872 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:28,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:24:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:28,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 00:24:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:28,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 00:24:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:28,125 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 00:24:28,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720663719] [2020-11-07 00:24:28,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:24:28,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 00:24:28,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347014603] [2020-11-07 00:24:28,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 00:24:28,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:24:28,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 00:24:28,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:24:28,129 INFO L87 Difference]: Start difference. First operand 178 states and 184 transitions. Second operand 5 states. [2020-11-07 00:24:28,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:24:28,566 INFO L93 Difference]: Finished difference Result 186 states and 191 transitions. [2020-11-07 00:24:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 00:24:28,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-11-07 00:24:28,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:24:28,570 INFO L225 Difference]: With dead ends: 186 [2020-11-07 00:24:28,570 INFO L226 Difference]: Without dead ends: 178 [2020-11-07 00:24:28,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:24:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-07 00:24:28,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-11-07 00:24:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-11-07 00:24:28,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 183 transitions. [2020-11-07 00:24:28,592 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 183 transitions. Word has length 70 [2020-11-07 00:24:28,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:24:28,594 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 183 transitions. [2020-11-07 00:24:28,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 00:24:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 183 transitions. [2020-11-07 00:24:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-07 00:24:28,598 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:28,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:24:28,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:24:28,598 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:28,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:28,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1833127254, now seen corresponding path program 1 times [2020-11-07 00:24:28,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:28,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978030515] [2020-11-07 00:24:28,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:28,602 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:28,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:28,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:28,757 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:24:28,757 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:24:28,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:24:28,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:24:28 BoogieIcfgContainer [2020-11-07 00:24:28,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:24:28,808 INFO L168 Benchmark]: Toolchain (without parser) took 3575.27 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 101.9 MB in the beginning and 147.6 MB in the end (delta: -45.7 MB). Peak memory consumption was 86.9 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:28,811 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 125.8 MB. Free memory was 104.5 MB in the beginning and 104.5 MB in the end (delta: 68.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:24:28,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.90 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 89.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:28,814 INFO L168 Benchmark]: Boogie Preprocessor took 63.48 ms. Allocated memory is still 125.8 MB. Free memory was 89.6 MB in the beginning and 87.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:28,816 INFO L168 Benchmark]: RCFGBuilder took 886.32 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 87.2 MB in the beginning and 119.7 MB in the end (delta: -32.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:28,818 INFO L168 Benchmark]: TraceAbstraction took 2137.49 ms. Allocated memory is still 166.7 MB. Free memory was 119.3 MB in the beginning and 147.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 62.8 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:28,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 125.8 MB. Free memory was 104.5 MB in the beginning and 104.5 MB in the end (delta: 68.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 467.90 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 89.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.48 ms. Allocated memory is still 125.8 MB. Free memory was 89.6 MB in the beginning and 87.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 886.32 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 87.2 MB in the beginning and 119.7 MB in the end (delta: -32.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2137.49 ms. Allocated memory is still 166.7 MB. Free memory was 119.3 MB in the beginning and 147.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 62.8 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 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 118, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L19] static const double one_modf = 1.0; [L118] double x = 0.0 / 0.0; [L119] double iptr; [L120] CALL, EXPR modf_double(x, &iptr) [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; [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 TRUE j0 < 20 [L32] COND TRUE j0 < 0 [L34] ieee_double_shape_type iw_u; [L35] iw_u.parts.msw = (i0 & 0x80000000) [L36] iw_u.parts.lsw = (0) [L37] EXPR iw_u.value [L37] (*iptr) = iw_u.value [L39] return x; [L120] RET, EXPR modf_double(x, &iptr) [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) [L123] CALL, EXPR isnan_double(iptr) [L17] return x != x; [L123] RET, EXPR isnan_double(iptr) [L123] isnan_double(iptr) && !isnan_double(res) [L123] CALL, EXPR isnan_double(res) [L17] return x != x; [L123] RET, EXPR isnan_double(res) [L123] isnan_double(iptr) && !isnan_double(res) [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L124] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1210.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 194 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 373 SDtfs, 46 SDslu, 357 SDs, 0 SdLazy, 520 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred 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, 2 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...