/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_1121a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:16,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:16,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:16,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:16,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:16,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:16,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:16,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:16,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:16,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:16,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:16,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:46:16,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:16,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:16,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:16,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:16,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:16,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:16,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:16,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:16,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:16,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:16,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:16,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:16,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:16,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:16,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:16,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:16,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:16,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:16,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:16,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:16,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:16,492 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:16,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:16,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:16,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:16,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:16,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:16,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:16,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:16,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:16,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:16,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:16,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:16,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:16,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:16,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:16,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:16,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:16,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:16,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:16,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:16,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:16,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:16,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:16,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:16,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:16,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:16,892 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:16,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-12-22 03:46:16,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de289bac/1a94700c84184ee8aa92ea61f00b8f80/FLAGb09fe4852 [2020-12-22 03:46:17,608 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:17,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-12-22 03:46:17,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de289bac/1a94700c84184ee8aa92ea61f00b8f80/FLAGb09fe4852 [2020-12-22 03:46:17,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de289bac/1a94700c84184ee8aa92ea61f00b8f80 [2020-12-22 03:46:17,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:17,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:17,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:17,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:17,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:17,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:17" (1/1) ... [2020-12-22 03:46:17,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2d18b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:17, skipping insertion in model container [2020-12-22 03:46:17,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:17" (1/1) ... [2020-12-22 03:46:17,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:18,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:18,245 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_1121a.c[3883,3896] [2020-12-22 03:46:18,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:18,267 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:18,350 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_1121a.c[3883,3896] [2020-12-22 03:46:18,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:18,389 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:18,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18 WrapperNode [2020-12-22 03:46:18,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:18,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:18,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:18,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:18,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:18,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:18,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:18,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:18,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (1/1) ... [2020-12-22 03:46:18,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:18,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:18,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:18,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:18,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (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 03:46:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:18,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:18,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:18,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:18,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:18,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:18,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-22 03:46:18,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:19,265 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:19,265 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 03:46:19,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:19 BoogieIcfgContainer [2020-12-22 03:46:19,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:19,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:19,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:19,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:19,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:17" (1/3) ... [2020-12-22 03:46:19,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a3572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:19, skipping insertion in model container [2020-12-22 03:46:19,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:18" (2/3) ... [2020-12-22 03:46:19,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a3572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:19, skipping insertion in model container [2020-12-22 03:46:19,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:19" (3/3) ... [2020-12-22 03:46:19,281 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-12-22 03:46:19,288 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:19,295 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:19,318 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:19,359 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:19,360 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:19,360 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:19,360 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:19,360 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:19,361 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:19,361 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:19,361 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-12-22 03:46:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:46:19,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:19,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:19,390 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:19,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:19,399 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-12-22 03:46:19,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:19,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837981596] [2020-12-22 03:46:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:19,617 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 03:46:19,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837981596] [2020-12-22 03:46:19,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:19,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:19,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94541789] [2020-12-22 03:46:19,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:19,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:19,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:19,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:19,644 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-12-22 03:46:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:19,689 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2020-12-22 03:46:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:19,691 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 03:46:19,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:19,705 INFO L225 Difference]: With dead ends: 108 [2020-12-22 03:46:19,706 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 03:46:19,709 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 03:46:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 03:46:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-22 03:46:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 03:46:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-12-22 03:46:19,773 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-12-22 03:46:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:19,774 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-12-22 03:46:19,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-12-22 03:46:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:46:19,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:19,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:19,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:19,776 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:19,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:19,777 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-12-22 03:46:19,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:19,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439412753] [2020-12-22 03:46:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:19,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:19,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:19,953 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:19,953 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:19,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:19,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:19 BoogieIcfgContainer [2020-12-22 03:46:19,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:19,994 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:19,994 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:19,995 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:19,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:19" (3/4) ... [2020-12-22 03:46:19,999 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:19,999 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:20,004 INFO L168 Benchmark]: Toolchain (without parser) took 2040.64 ms. Allocated memory was 156.2 MB in the beginning and 190.8 MB in the end (delta: 34.6 MB). Free memory was 136.3 MB in the beginning and 160.3 MB in the end (delta: -24.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:20,005 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:20,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.37 ms. Allocated memory is still 156.2 MB. Free memory was 136.2 MB in the beginning and 139.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:20,008 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.79 ms. Allocated memory is still 156.2 MB. Free memory was 139.4 MB in the beginning and 137.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:20,009 INFO L168 Benchmark]: Boogie Preprocessor took 65.74 ms. Allocated memory is still 156.2 MB. Free memory was 137.0 MB in the beginning and 134.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:20,011 INFO L168 Benchmark]: RCFGBuilder took 734.14 ms. Allocated memory is still 156.2 MB. Free memory was 134.9 MB in the beginning and 104.8 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:20,012 INFO L168 Benchmark]: TraceAbstraction took 722.21 ms. Allocated memory was 156.2 MB in the beginning and 190.8 MB in the end (delta: 34.6 MB). Free memory was 104.4 MB in the beginning and 160.7 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:20,013 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 190.8 MB. Free memory is still 160.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:20,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 431.37 ms. Allocated memory is still 156.2 MB. Free memory was 136.2 MB in the beginning and 139.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 73.79 ms. Allocated memory is still 156.2 MB. Free memory was 139.4 MB in the beginning and 137.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.74 ms. Allocated memory is still 156.2 MB. Free memory was 137.0 MB in the beginning and 134.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 734.14 ms. Allocated memory is still 156.2 MB. Free memory was 134.9 MB in the beginning and 104.8 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 722.21 ms. Allocated memory was 156.2 MB in the beginning and 190.8 MB in the end (delta: 34.6 MB). Free memory was 104.4 MB in the beginning and 160.7 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.01 ms. Allocated memory is still 190.8 MB. Free memory is still 160.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 177]: 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 bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, 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}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [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}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L176] COND TRUE !isnan_double(res) [L177] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 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=55occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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...