/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/float_req_bl_1052d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:20,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:20,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:20,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:25:20,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:20,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:20,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:20,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:20,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:20,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:20,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:20,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:20,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:20,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:20,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:20,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:20,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:20,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:20,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:20,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:20,856 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 20:25:20,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:20,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:20,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:20,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:20,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:20,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:20,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:20,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:20,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:20,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:20,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:20,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:20,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:20,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:20,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:20,888 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:20,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:20,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:20,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:20,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:20,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:20,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:20,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:21,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:21,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:21,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:21,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:21,359 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:21,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c [2020-10-23 20:25:21,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e1493db/2e7a9b20a72e46099015f1b3eabe5911/FLAG5b5a33179 [2020-10-23 20:25:22,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:22,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c [2020-10-23 20:25:22,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e1493db/2e7a9b20a72e46099015f1b3eabe5911/FLAG5b5a33179 [2020-10-23 20:25:22,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e1493db/2e7a9b20a72e46099015f1b3eabe5911 [2020-10-23 20:25:22,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:22,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:22,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:22,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:22,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:22,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a20cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22, skipping insertion in model container [2020-10-23 20:25:22,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:22,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:22,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:22,719 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:22,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:22,774 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:22,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22 WrapperNode [2020-10-23 20:25:22,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:22,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:22,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:22,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:22,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (1/1) ... [2020-10-23 20:25:22,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:22,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:22,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:22,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:22,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (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 20:25:22,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:22,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:22,973 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:22,973 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-10-23 20:25:22,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-23 20:25:22,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:22,974 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:22,975 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:22,975 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:22,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:22,975 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-10-23 20:25:22,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:25:22,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:22,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:22,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:22,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:25:22,977 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-23 20:25:22,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:22,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:22,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:22,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:23,616 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:23,616 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 20:25:23,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:23 BoogieIcfgContainer [2020-10-23 20:25:23,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:23,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:23,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:23,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:23,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:22" (1/3) ... [2020-10-23 20:25:23,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32df2714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:23, skipping insertion in model container [2020-10-23 20:25:23,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:22" (2/3) ... [2020-10-23 20:25:23,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32df2714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:23, skipping insertion in model container [2020-10-23 20:25:23,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:23" (3/3) ... [2020-10-23 20:25:23,628 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d.c [2020-10-23 20:25:23,643 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:23,650 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:23,667 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:23,697 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:23,697 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:23,697 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:23,697 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:23,698 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:23,698 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:23,698 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:23,698 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:23,719 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-10-23 20:25:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 20:25:23,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:23,733 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] [2020-10-23 20:25:23,733 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:23,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1610076482, now seen corresponding path program 1 times [2020-10-23 20:25:23,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:23,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004921270] [2020-10-23 20:25:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:23,841 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:24,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:24,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:25:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:24,176 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 20:25:24,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004921270] [2020-10-23 20:25:24,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:24,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:24,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964617527] [2020-10-23 20:25:24,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:24,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:24,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:24,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:24,207 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 4 states. [2020-10-23 20:25:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:24,771 INFO L93 Difference]: Finished difference Result 177 states and 211 transitions. [2020-10-23 20:25:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:24,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-23 20:25:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:24,784 INFO L225 Difference]: With dead ends: 177 [2020-10-23 20:25:24,785 INFO L226 Difference]: Without dead ends: 90 [2020-10-23 20:25:24,789 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 [2020-10-23 20:25:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-23 20:25:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-23 20:25:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-23 20:25:24,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2020-10-23 20:25:24,848 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 37 [2020-10-23 20:25:24,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:24,849 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2020-10-23 20:25:24,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:24,849 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2020-10-23 20:25:24,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-23 20:25:24,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:24,852 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] [2020-10-23 20:25:24,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:24,852 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:24,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:24,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1993668518, now seen corresponding path program 1 times [2020-10-23 20:25:24,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:24,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934688060] [2020-10-23 20:25:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:24,858 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:24,947 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:25,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:25,105 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:25,106 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:25,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:25,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:25 BoogieIcfgContainer [2020-10-23 20:25:25,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:25,129 INFO L168 Benchmark]: Toolchain (without parser) took 2695.35 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 108.1 MB in the beginning and 117.2 MB in the end (delta: -9.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:25,130 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:25,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.56 ms. Allocated memory is still 151.0 MB. Free memory was 107.6 MB in the beginning and 125.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:25,132 INFO L168 Benchmark]: Boogie Preprocessor took 106.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 133.3 MB in the end (delta: -7.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:25,133 INFO L168 Benchmark]: RCFGBuilder took 735.74 ms. Allocated memory is still 151.0 MB. Free memory was 133.3 MB in the beginning and 109.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:25,134 INFO L168 Benchmark]: TraceAbstraction took 1506.15 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 108.8 MB in the beginning and 117.2 MB in the end (delta: -8.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:25,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 335.56 ms. Allocated memory is still 151.0 MB. Free memory was 107.6 MB in the beginning and 125.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 106.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 133.3 MB in the end (delta: -7.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 735.74 ms. Allocated memory is still 151.0 MB. Free memory was 133.3 MB in the beginning and 109.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1506.15 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 108.8 MB in the beginning and 117.2 MB in the end (delta: -8.4 MB). Peak memory consumption was 23.0 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 someBinaryFLOATComparisonOperation at line 81, overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; [L77] float x = 0.0f; [L78] CALL, EXPR floor_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; [L78] RET, EXPR floor_float(x) [L78] float res = floor_float(x); [L81] EXPR res == 0.0f && __signbit_float(res) == 0 [L81] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L82] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1052d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 100 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 19 SDslu, 72 SDs, 0 SdLazy, 114 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred 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...