/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-b8ad66e [2020-10-23 20:25:01,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:01,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:01,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:25:01,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:01,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:01,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:01,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:01,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:01,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:01,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:01,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:01,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:01,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:01,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:01,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:01,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:01,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:01,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:01,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:01,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:25:01,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:01,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:01,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:01,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:01,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:01,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:01,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:01,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:01,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:01,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:01,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:01,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:01,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:01,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:01,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:01,259 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:01,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:01,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:01,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:01,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:01,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:01,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:01,260 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:01,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:01,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:01,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:01,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:01,729 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:01,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-10-23 20:25:01,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11f02c2bf/a2890e294cb74976ae26e4b309ff2fd9/FLAG2f777d9f6 [2020-10-23 20:25:02,559 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:02,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-10-23 20:25:02,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11f02c2bf/a2890e294cb74976ae26e4b309ff2fd9/FLAG2f777d9f6 [2020-10-23 20:25:02,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11f02c2bf/a2890e294cb74976ae26e4b309ff2fd9 [2020-10-23 20:25:02,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:02,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:02,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:02,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:02,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:02,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:02" (1/1) ... [2020-10-23 20:25:02,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae9f26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:02, skipping insertion in model container [2020-10-23 20:25:02,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:02" (1/1) ... [2020-10-23 20:25:02,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:02,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:03,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:03,139 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:03,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:03,205 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:03,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:03 WrapperNode [2020-10-23 20:25:03,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:03,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:03,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:03,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:03,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:03" (1/1) ... [2020-10-23 20:25:03,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:03" (1/1) ... [2020-10-23 20:25:03,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:03" (1/1) ... [2020-10-23 20:25:03,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:03" (1/1) ... [2020-10-23 20:25:03,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:03" (1/1) ... [2020-10-23 20:25:03,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:03" (1/1) ... [2020-10-23 20:25:03,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:03" (1/1) ... [2020-10-23 20:25:03,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:03,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:03,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:03,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:03,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:03,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 20:25:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-10-23 20:25:03,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 20:25:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-10-23 20:25:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:25:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:25:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:04,251 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:04,251 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-23 20:25:04,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:04 BoogieIcfgContainer [2020-10-23 20:25:04,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:04,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:04,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:04,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:04,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:02" (1/3) ... [2020-10-23 20:25:04,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d043ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:04, skipping insertion in model container [2020-10-23 20:25:04,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:03" (2/3) ... [2020-10-23 20:25:04,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d043ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:04, skipping insertion in model container [2020-10-23 20:25:04,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:04" (3/3) ... [2020-10-23 20:25:04,263 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-10-23 20:25:04,275 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:04,281 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:04,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:04,328 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:04,328 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:04,329 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:04,329 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:04,329 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:04,329 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:04,329 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:04,329 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:04,350 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2020-10-23 20:25:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-23 20:25:04,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:04,365 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] [2020-10-23 20:25:04,365 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:04,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:04,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1598378518, now seen corresponding path program 1 times [2020-10-23 20:25:04,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:04,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669769905] [2020-10-23 20:25:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:04,453 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:04,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:04,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:25:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:04,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 20:25:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:04,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669769905] [2020-10-23 20:25:04,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:04,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:04,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921977478] [2020-10-23 20:25:04,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:04,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:04,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:04,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:04,792 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 4 states. [2020-10-23 20:25:05,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:05,440 INFO L93 Difference]: Finished difference Result 361 states and 416 transitions. [2020-10-23 20:25:05,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:05,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-23 20:25:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:05,454 INFO L225 Difference]: With dead ends: 361 [2020-10-23 20:25:05,455 INFO L226 Difference]: Without dead ends: 178 [2020-10-23 20:25:05,460 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 [2020-10-23 20:25:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-23 20:25:05,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-23 20:25:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-23 20:25:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 184 transitions. [2020-10-23 20:25:05,528 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 184 transitions. Word has length 48 [2020-10-23 20:25:05,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:05,529 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 184 transitions. [2020-10-23 20:25:05,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 184 transitions. [2020-10-23 20:25:05,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-23 20:25:05,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:05,534 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] [2020-10-23 20:25:05,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:05,535 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:05,536 INFO L82 PathProgramCache]: Analyzing trace with hash 2058803451, now seen corresponding path program 1 times [2020-10-23 20:25:05,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:05,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645610280] [2020-10-23 20:25:05,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:05,541 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:05,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:05,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:25:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:05,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 20:25:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:05,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645610280] [2020-10-23 20:25:05,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:05,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:25:05,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337143335] [2020-10-23 20:25:05,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:25:05,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:05,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:25:05,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:25:05,811 INFO L87 Difference]: Start difference. First operand 178 states and 184 transitions. Second operand 5 states. [2020-10-23 20:25:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:06,338 INFO L93 Difference]: Finished difference Result 186 states and 191 transitions. [2020-10-23 20:25:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:25:06,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-23 20:25:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:06,343 INFO L225 Difference]: With dead ends: 186 [2020-10-23 20:25:06,343 INFO L226 Difference]: Without dead ends: 178 [2020-10-23 20:25:06,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:25:06,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-23 20:25:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-23 20:25:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-23 20:25:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 183 transitions. [2020-10-23 20:25:06,367 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 183 transitions. Word has length 70 [2020-10-23 20:25:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:06,370 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 183 transitions. [2020-10-23 20:25:06,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:25:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 183 transitions. [2020-10-23 20:25:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-23 20:25:06,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:06,374 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] [2020-10-23 20:25:06,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:06,374 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:06,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1833127254, now seen corresponding path program 1 times [2020-10-23 20:25:06,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:06,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52684341] [2020-10-23 20:25:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:06,379 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:06,452 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:06,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:06,622 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:06,622 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:06,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:25:06,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:06 BoogieIcfgContainer [2020-10-23 20:25:06,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:06,659 INFO L168 Benchmark]: Toolchain (without parser) took 3786.11 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 139.5 MB in the beginning and 105.6 MB in the end (delta: 33.9 MB). Peak memory consumption was 68.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:06,662 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 98.0 MB in the beginning and 98.0 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:06,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.59 ms. Allocated memory is still 163.6 MB. Free memory was 138.9 MB in the beginning and 127.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:06,665 INFO L168 Benchmark]: Boogie Preprocessor took 64.50 ms. Allocated memory is still 163.6 MB. Free memory was 127.3 MB in the beginning and 125.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:06,667 INFO L168 Benchmark]: RCFGBuilder took 980.76 ms. Allocated memory is still 163.6 MB. Free memory was 124.9 MB in the beginning and 109.9 MB in the end (delta: 15.0 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:06,669 INFO L168 Benchmark]: TraceAbstraction took 2398.15 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 109.3 MB in the beginning and 105.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 37.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:06,681 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 98.0 MB in the beginning and 98.0 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.59 ms. Allocated memory is still 163.6 MB. Free memory was 138.9 MB in the beginning and 127.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.50 ms. Allocated memory is still 163.6 MB. Free memory was 127.3 MB in the beginning and 125.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 980.76 ms. Allocated memory is still 163.6 MB. Free memory was 124.9 MB in the beginning and 109.9 MB in the end (delta: 15.0 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2398.15 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 109.3 MB in the beginning and 105.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 37.2 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: 2.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.2s, 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, 0.7s 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...