/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:18,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:18,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:18,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:18,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:18,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:18,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:18,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:18,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:18,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:18,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:18,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:46:18,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:18,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:18,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:18,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:18,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:18,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:18,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:18,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:18,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:18,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:18,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:18,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:18,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:18,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:18,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:18,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:18,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:19,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:19,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:19,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:19,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:19,013 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:19,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:19,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:19,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:19,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:19,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:19,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:19,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:19,015 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:19,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:19,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:19,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:19,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:19,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:19,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:19,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:19,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:19,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:19,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:19,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:19,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:19,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:19,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:19,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:19,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:19,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:19,449 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:19,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-12-22 03:46:19,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/590b14f1d/4c14e292fc87473fb0ab657f96c49147/FLAGc010c1e33 [2020-12-22 03:46:20,153 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:20,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-12-22 03:46:20,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/590b14f1d/4c14e292fc87473fb0ab657f96c49147/FLAGc010c1e33 [2020-12-22 03:46:20,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/590b14f1d/4c14e292fc87473fb0ab657f96c49147 [2020-12-22 03:46:20,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:20,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:20,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:20,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:20,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:20,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33df22fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20, skipping insertion in model container [2020-12-22 03:46:20,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:20,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:20,756 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c[4189,4202] [2020-12-22 03:46:20,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:20,769 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:20,845 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c[4189,4202] [2020-12-22 03:46:20,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:20,903 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:20,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20 WrapperNode [2020-12-22 03:46:20,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:20,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:20,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:20,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:20,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:20,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:21,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:21,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:21,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:21,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:21,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:21,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:21,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:21,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:21,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:21,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:21,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (1/1) ... [2020-12-22 03:46:21,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:21,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:21,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:21,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:21,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (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 [2020-12-22 03:46:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:21,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:21,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:21,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:21,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:21,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:21,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-22 03:46:21,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:22,110 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:22,111 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-22 03:46:22,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:22 BoogieIcfgContainer [2020-12-22 03:46:22,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:22,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:22,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:22,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:22,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:20" (1/3) ... [2020-12-22 03:46:22,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aaa06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:22, skipping insertion in model container [2020-12-22 03:46:22,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:20" (2/3) ... [2020-12-22 03:46:22,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aaa06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:22, skipping insertion in model container [2020-12-22 03:46:22,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:22" (3/3) ... [2020-12-22 03:46:22,123 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-12-22 03:46:22,132 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:22,138 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:22,160 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:22,194 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:22,194 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:22,195 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:22,195 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:22,195 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:22,195 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:22,196 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:22,196 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:22,215 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-12-22 03:46:22,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:46:22,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:22,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:22,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:22,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:22,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-12-22 03:46:22,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:22,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46369795] [2020-12-22 03:46:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:22,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46369795] [2020-12-22 03:46:22,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:22,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:22,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167214104] [2020-12-22 03:46:22,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:22,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:22,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:22,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:22,444 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-12-22 03:46:22,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:22,495 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2020-12-22 03:46:22,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:22,496 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 03:46:22,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:22,536 INFO L225 Difference]: With dead ends: 118 [2020-12-22 03:46:22,536 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 03:46:22,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:22,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 03:46:22,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-22 03:46:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 03:46:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-12-22 03:46:22,612 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-12-22 03:46:22,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:22,614 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-12-22 03:46:22,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-12-22 03:46:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 03:46:22,615 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:22,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:22,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:22,616 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:22,619 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-12-22 03:46:22,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:22,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987450245] [2020-12-22 03:46:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:22,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:22,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:22,996 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:22,997 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:22,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:23,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:23 BoogieIcfgContainer [2020-12-22 03:46:23,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:23,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:23,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:23,067 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:23,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:22" (3/4) ... [2020-12-22 03:46:23,072 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:23,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:23,078 INFO L168 Benchmark]: Toolchain (without parser) took 2585.51 ms. Allocated memory is still 168.8 MB. Free memory was 125.2 MB in the beginning and 83.8 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,080 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 168.8 MB. Free memory is still 142.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:23,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.22 ms. Allocated memory is still 168.8 MB. Free memory was 125.1 MB in the beginning and 151.5 MB in the end (delta: -26.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.90 ms. Allocated memory is still 168.8 MB. Free memory was 151.5 MB in the beginning and 148.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,084 INFO L168 Benchmark]: Boogie Preprocessor took 77.09 ms. Allocated memory is still 168.8 MB. Free memory was 148.9 MB in the beginning and 146.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,086 INFO L168 Benchmark]: RCFGBuilder took 1008.65 ms. Allocated memory is still 168.8 MB. Free memory was 146.8 MB in the beginning and 114.8 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,087 INFO L168 Benchmark]: TraceAbstraction took 951.14 ms. Allocated memory is still 168.8 MB. Free memory was 114.3 MB in the beginning and 84.4 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,090 INFO L168 Benchmark]: Witness Printer took 6.39 ms. Allocated memory is still 168.8 MB. Free memory was 84.4 MB in the beginning and 83.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 168.8 MB. Free memory is still 142.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 414.22 ms. Allocated memory is still 168.8 MB. Free memory was 125.1 MB in the beginning and 151.5 MB in the end (delta: -26.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 118.90 ms. Allocated memory is still 168.8 MB. Free memory was 151.5 MB in the beginning and 148.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.09 ms. Allocated memory is still 168.8 MB. Free memory was 148.9 MB in the beginning and 146.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1008.65 ms. Allocated memory is still 168.8 MB. Free memory was 146.8 MB in the beginning and 114.8 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 951.14 ms. Allocated memory is still 168.8 MB. Free memory was 114.3 MB in the beginning and 84.4 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * Witness Printer took 6.39 ms. Allocated memory is still 168.8 MB. Free memory was 84.4 MB in the beginning and 83.8 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L166] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L185] COND TRUE isfinite_double(x) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L191] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...