/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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:24:09,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:24:09,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:24:09,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:24:09,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:24:09,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:24:09,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:24:09,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:24:09,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:24:09,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:24:09,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:24:09,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:24:09,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:24:09,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:24:09,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:24:09,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:24:09,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:24:09,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:24:09,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:24:09,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:24:09,206 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 00:24:09,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:24:09,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:24:09,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:24:09,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:24:09,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:24:09,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:24:09,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:24:09,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:24:09,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:24:09,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:24:09,237 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:24:09,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:24:09,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:24:09,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:24:09,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:24:09,239 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:24:09,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:24:09,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:24:09,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:24:09,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:24:09,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:24:09,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:24:09,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:24:09,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:24:09,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:24:09,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:24:09,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:24:09,665 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:24:09,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-11-07 00:24:09,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c683990/b7dafc9e310d412f856a03c7a894ef7f/FLAG8c6bd2519 [2020-11-07 00:24:10,607 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:24:10,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-11-07 00:24:10,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c683990/b7dafc9e310d412f856a03c7a894ef7f/FLAG8c6bd2519 [2020-11-07 00:24:10,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c683990/b7dafc9e310d412f856a03c7a894ef7f [2020-11-07 00:24:10,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:24:10,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:24:10,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:10,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:24:10,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:24:10,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:10" (1/1) ... [2020-11-07 00:24:10,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4980f8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:10, skipping insertion in model container [2020-11-07 00:24:10,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:10" (1/1) ... [2020-11-07 00:24:10,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:24:10,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:24:11,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:11,186 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:24:11,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:11,286 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:24:11,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:11 WrapperNode [2020-11-07 00:24:11,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:11,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:24:11,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:24:11,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:24:11,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:11" (1/1) ... [2020-11-07 00:24:11,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:11" (1/1) ... [2020-11-07 00:24:11,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:11" (1/1) ... [2020-11-07 00:24:11,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:11" (1/1) ... [2020-11-07 00:24:11,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:11" (1/1) ... [2020-11-07 00:24:11,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:11" (1/1) ... [2020-11-07 00:24:11,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:11" (1/1) ... [2020-11-07 00:24:11,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:24:11,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:24:11,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:24:11,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:24:11,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:11" (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 00:24:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:24:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:24:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:24:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-11-07 00:24:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-11-07 00:24:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:24:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:24:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:24:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:24:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:24:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-11-07 00:24:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:24:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:24:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:24:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:24:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:24:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-11-07 00:24:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:24:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:24:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:24:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:24:12,262 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:24:12,262 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-07 00:24:12,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:12 BoogieIcfgContainer [2020-11-07 00:24:12,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:24:12,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:24:12,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:24:12,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:24:12,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:24:10" (1/3) ... [2020-11-07 00:24:12,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202f78c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:12, skipping insertion in model container [2020-11-07 00:24:12,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:11" (2/3) ... [2020-11-07 00:24:12,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202f78c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:12, skipping insertion in model container [2020-11-07 00:24:12,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:12" (3/3) ... [2020-11-07 00:24:12,274 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-11-07 00:24:12,290 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:24:12,295 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:24:12,308 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:24:12,334 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:24:12,334 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:24:12,334 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:24:12,335 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:24:12,335 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:24:12,335 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:24:12,335 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:24:12,335 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:24:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-11-07 00:24:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-07 00:24:12,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:12,369 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] [2020-11-07 00:24:12,369 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:12,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:12,376 INFO L82 PathProgramCache]: Analyzing trace with hash -44879159, now seen corresponding path program 1 times [2020-11-07 00:24:12,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:12,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871512120] [2020-11-07 00:24:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:12,474 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:12,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:24:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:12,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:24:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:12,868 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 00:24:12,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871512120] [2020-11-07 00:24:12,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:24:12,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:24:12,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091010372] [2020-11-07 00:24:12,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:24:12,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:24:12,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:24:12,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:24:12,901 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 4 states. [2020-11-07 00:24:13,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:24:13,580 INFO L93 Difference]: Finished difference Result 222 states and 268 transitions. [2020-11-07 00:24:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:24:13,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-11-07 00:24:13,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:24:13,595 INFO L225 Difference]: With dead ends: 222 [2020-11-07 00:24:13,595 INFO L226 Difference]: Without dead ends: 113 [2020-11-07 00:24:13,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:24:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-07 00:24:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-11-07 00:24:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-07 00:24:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2020-11-07 00:24:13,666 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 38 [2020-11-07 00:24:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:24:13,666 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2020-11-07 00:24:13,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:24:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2020-11-07 00:24:13,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 00:24:13,671 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:13,671 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] [2020-11-07 00:24:13,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:24:13,672 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:13,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:13,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2002351519, now seen corresponding path program 1 times [2020-11-07 00:24:13,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:13,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409797260] [2020-11-07 00:24:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:13,680 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:13,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:13,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:13,966 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:24:13,966 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:24:13,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:24:13,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:24:13 BoogieIcfgContainer [2020-11-07 00:24:13,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:24:14,005 INFO L168 Benchmark]: Toolchain (without parser) took 3069.45 ms. Allocated memory is still 162.5 MB. Free memory was 138.4 MB in the beginning and 99.2 MB in the end (delta: 39.2 MB). Peak memory consumption was 40.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:14,007 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 97.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:24:14,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.14 ms. Allocated memory is still 162.5 MB. Free memory was 137.7 MB in the beginning and 126.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:14,012 INFO L168 Benchmark]: Boogie Preprocessor took 59.39 ms. Allocated memory is still 162.5 MB. Free memory was 126.5 MB in the beginning and 124.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:14,012 INFO L168 Benchmark]: RCFGBuilder took 915.59 ms. Allocated memory is still 162.5 MB. Free memory was 124.6 MB in the beginning and 129.0 MB in the end (delta: -4.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:14,014 INFO L168 Benchmark]: TraceAbstraction took 1733.00 ms. Allocated memory is still 162.5 MB. Free memory was 128.6 MB in the beginning and 99.2 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:14,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 97.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 344.14 ms. Allocated memory is still 162.5 MB. Free memory was 137.7 MB in the beginning and 126.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.39 ms. Allocated memory is still 162.5 MB. Free memory was 126.5 MB in the beginning and 124.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 915.59 ms. Allocated memory is still 162.5 MB. Free memory was 124.6 MB in the beginning and 129.0 MB in the end (delta: -4.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1733.00 ms. Allocated memory is still 162.5 MB. Free memory was 128.6 MB in the beginning and 99.2 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.7 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 104, overapproximation of someUnaryDOUBLEoperation at line 100, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; [L100] double x = -0.0; [L101] CALL, EXPR floor_double(x) [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L28] COND FALSE !(j0 < 20) [L49] COND TRUE j0 > 51 [L50] COND FALSE !(j0 == 0x400) [L53] return x; [L101] RET, EXPR floor_double(x) [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L105] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1052c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 123 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 21 SDslu, 96 SDs, 0 SdLazy, 146 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred 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...