/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_1072a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:10,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:10,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:10,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:10,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:10,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:10,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:10,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:10,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:10,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:10,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:10,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:46:10,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:10,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:10,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:10,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:10,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:10,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:10,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:10,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:10,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:10,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:10,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:10,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:10,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:10,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:10,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:10,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:10,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:10,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:10,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:10,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:10,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:10,442 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:10,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:10,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:10,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:10,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:10,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:10,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:10,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:10,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:10,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:10,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:10,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:10,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:10,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:10,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:10,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:10,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:10,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:10,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:10,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:10,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:10,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:10,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:10,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:10,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:10,872 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:10,873 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:10,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-12-22 03:46:10,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b55813431/cb4de06dc29e4b8d8a19b1a7ed697fe1/FLAG1cb73ad1a [2020-12-22 03:46:11,654 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:11,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-12-22 03:46:11,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b55813431/cb4de06dc29e4b8d8a19b1a7ed697fe1/FLAG1cb73ad1a [2020-12-22 03:46:12,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b55813431/cb4de06dc29e4b8d8a19b1a7ed697fe1 [2020-12-22 03:46:12,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:12,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:12,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:12,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:12,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:12,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:12" (1/1) ... [2020-12-22 03:46:12,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff59e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12, skipping insertion in model container [2020-12-22 03:46:12,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:12" (1/1) ... [2020-12-22 03:46:12,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:12,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:12,290 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_1072a.c[2254,2267] [2020-12-22 03:46:12,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:12,302 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:12,333 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_1072a.c[2254,2267] [2020-12-22 03:46:12,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:12,350 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:12,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12 WrapperNode [2020-12-22 03:46:12,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:12,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:12,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:12,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:12,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12" (1/1) ... [2020-12-22 03:46:12,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12" (1/1) ... [2020-12-22 03:46:12,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:12,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:12,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:12,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:12,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12" (1/1) ... [2020-12-22 03:46:12,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12" (1/1) ... [2020-12-22 03:46:12,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12" (1/1) ... [2020-12-22 03:46:12,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12" (1/1) ... [2020-12-22 03:46:12,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12" (1/1) ... [2020-12-22 03:46:12,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12" (1/1) ... [2020-12-22 03:46:12,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12" (1/1) ... [2020-12-22 03:46:12,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:12,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:12,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:12,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:12,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12" (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 03:46:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:12,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:12,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:12,942 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-22 03:46:12,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:12 BoogieIcfgContainer [2020-12-22 03:46:12,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:12,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:12,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:12,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:12,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:12" (1/3) ... [2020-12-22 03:46:12,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbdfb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:12, skipping insertion in model container [2020-12-22 03:46:12,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:12" (2/3) ... [2020-12-22 03:46:12,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbdfb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:12, skipping insertion in model container [2020-12-22 03:46:12,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:12" (3/3) ... [2020-12-22 03:46:12,956 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-12-22 03:46:12,964 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:12,970 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:12,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:13,039 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:13,039 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:13,039 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:13,039 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:13,039 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:13,040 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:13,040 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:13,040 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:13,059 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-12-22 03:46:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:46:13,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:13,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:13,066 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:13,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:13,074 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-12-22 03:46:13,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:13,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516554602] [2020-12-22 03:46:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:13,302 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 03:46:13,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516554602] [2020-12-22 03:46:13,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:13,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:13,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641942003] [2020-12-22 03:46:13,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:13,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:13,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:13,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:13,328 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-12-22 03:46:13,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:13,354 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2020-12-22 03:46:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:13,356 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 03:46:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:13,375 INFO L225 Difference]: With dead ends: 52 [2020-12-22 03:46:13,376 INFO L226 Difference]: Without dead ends: 24 [2020-12-22 03:46:13,379 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 03:46:13,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-22 03:46:13,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-22 03:46:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 03:46:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-22 03:46:13,422 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-12-22 03:46:13,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:13,422 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-22 03:46:13,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:13,423 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-22 03:46:13,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:46:13,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:13,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:13,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:13,426 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:13,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-12-22 03:46:13,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:13,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70368011] [2020-12-22 03:46:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:13,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:13,712 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:13,739 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:13,739 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:13,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:13,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:13 BoogieIcfgContainer [2020-12-22 03:46:13,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:13,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:13,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:13,772 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:13,773 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:12" (3/4) ... [2020-12-22 03:46:13,776 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:13,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:13,779 INFO L168 Benchmark]: Toolchain (without parser) took 1741.51 ms. Allocated memory is still 152.0 MB. Free memory was 125.8 MB in the beginning and 126.0 MB in the end (delta: -205.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:13,780 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 126.7 MB in the end (delta: 102.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:13,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.46 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 114.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:13,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.95 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 113.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:13,782 INFO L168 Benchmark]: Boogie Preprocessor took 44.99 ms. Allocated memory is still 152.0 MB. Free memory was 113.0 MB in the beginning and 111.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:13,783 INFO L168 Benchmark]: RCFGBuilder took 502.67 ms. Allocated memory is still 152.0 MB. Free memory was 111.4 MB in the beginning and 91.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:13,784 INFO L168 Benchmark]: TraceAbstraction took 823.99 ms. Allocated memory is still 152.0 MB. Free memory was 91.2 MB in the beginning and 126.5 MB in the end (delta: -35.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:13,784 INFO L168 Benchmark]: Witness Printer took 4.44 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 126.0 MB in the end (delta: 517.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:13,789 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 126.7 MB in the end (delta: 102.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 311.46 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 114.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.95 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 113.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.99 ms. Allocated memory is still 152.0 MB. Free memory was 113.0 MB in the beginning and 111.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 502.67 ms. Allocated memory is still 152.0 MB. Free memory was 111.4 MB in the beginning and 91.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 823.99 ms. Allocated memory is still 152.0 MB. Free memory was 91.2 MB in the beginning and 126.5 MB in the end (delta: -35.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. * Witness Printer took 4.44 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 126.0 MB in the end (delta: 517.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: 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 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 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=27occurred 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, 28 NumberOfCodeBlocks, 28 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...