/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_0730b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:45:38,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:45:38,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:45:38,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:45:38,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:45:38,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:45:38,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:45:38,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:45:38,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:45:38,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:45:38,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:45:38,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:45:38,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:45:38,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:45:38,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:45:38,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:45:38,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:45:38,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:45:38,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:45:38,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:45:38,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:45:38,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:45:38,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:45:38,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:45:38,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:45:38,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:45:38,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:45:38,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:45:38,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:45:38,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:45:38,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:45:38,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:45:38,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:45:38,535 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:45:38,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:45:38,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:45:38,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:45:38,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:45:38,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:45:38,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:45:38,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:45:38,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:45:38,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:45:38,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:45:38,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:45:38,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:45:38,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:45:38,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:45:38,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:45:38,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:45:38,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:45:38,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:45:38,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:45:38,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:45:38,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:45:38,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:45:39,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:45:39,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:45:39,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:45:39,017 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:45:39,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-12-22 03:45:39,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90cf973d7/75fa8dd328fc4fbcb62e240a7412b127/FLAG12152e9ad [2020-12-22 03:45:39,702 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:45:39,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-12-22 03:45:39,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90cf973d7/75fa8dd328fc4fbcb62e240a7412b127/FLAG12152e9ad [2020-12-22 03:45:40,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90cf973d7/75fa8dd328fc4fbcb62e240a7412b127 [2020-12-22 03:45:40,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:45:40,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:45:40,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:45:40,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:45:40,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:45:40,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:45:40" (1/1) ... [2020-12-22 03:45:40,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72142306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40, skipping insertion in model container [2020-12-22 03:45:40,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:45:40" (1/1) ... [2020-12-22 03:45:40,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:45:40,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:45:40,290 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_0730b.c[3225,3238] [2020-12-22 03:45:40,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:45:40,304 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:45:40,352 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_0730b.c[3225,3238] [2020-12-22 03:45:40,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:45:40,371 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:45:40,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40 WrapperNode [2020-12-22 03:45:40,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:45:40,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:45:40,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:45:40,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:45:40,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40" (1/1) ... [2020-12-22 03:45:40,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40" (1/1) ... [2020-12-22 03:45:40,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:45:40,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:45:40,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:45:40,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:45:40,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40" (1/1) ... [2020-12-22 03:45:40,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40" (1/1) ... [2020-12-22 03:45:40,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40" (1/1) ... [2020-12-22 03:45:40,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40" (1/1) ... [2020-12-22 03:45:40,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40" (1/1) ... [2020-12-22 03:45:40,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40" (1/1) ... [2020-12-22 03:45:40,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40" (1/1) ... [2020-12-22 03:45:40,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:45:40,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:45:40,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:45:40,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:45:40,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40" (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 03:45:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:45:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:45:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:45:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:45:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:45:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:45:40,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:45:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:45:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:45:41,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:45:41,511 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-22 03:45:41,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:45:41 BoogieIcfgContainer [2020-12-22 03:45:41,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:45:41,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:45:41,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:45:41,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:45:41,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:45:40" (1/3) ... [2020-12-22 03:45:41,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2f2152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:45:41, skipping insertion in model container [2020-12-22 03:45:41,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:40" (2/3) ... [2020-12-22 03:45:41,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2f2152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:45:41, skipping insertion in model container [2020-12-22 03:45:41,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:45:41" (3/3) ... [2020-12-22 03:45:41,523 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-12-22 03:45:41,530 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:45:41,536 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:45:41,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:45:41,582 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:45:41,583 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:45:41,583 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:45:41,583 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:45:41,583 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:45:41,583 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:45:41,583 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:45:41,584 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:45:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-22 03:45:41,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 03:45:41,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:45:41,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:45:41,608 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:45:41,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:45:41,615 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-12-22 03:45:41,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:45:41,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887020627] [2020-12-22 03:45:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:45:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:45:41,822 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 03:45:41,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887020627] [2020-12-22 03:45:41,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:45:41,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:45:41,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616464318] [2020-12-22 03:45:41,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:45:41,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:45:41,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:45:41,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:45:41,857 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-22 03:45:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:45:41,903 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2020-12-22 03:45:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:45:41,904 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 03:45:41,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:45:41,916 INFO L225 Difference]: With dead ends: 104 [2020-12-22 03:45:41,916 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 03:45:41,920 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 03:45:41,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 03:45:41,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-22 03:45:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 03:45:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-12-22 03:45:41,961 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-12-22 03:45:41,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:45:41,962 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-12-22 03:45:41,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:45:41,962 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-12-22 03:45:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 03:45:41,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:45:41,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:45:41,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:45:41,964 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:45:41,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:45:41,965 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-12-22 03:45:41,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:45:41,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077540399] [2020-12-22 03:45:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:45:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:45:42,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:45:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:45:42,086 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:45:42,131 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:45:42,131 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:45:42,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:45:42,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:45:42 BoogieIcfgContainer [2020-12-22 03:45:42,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:45:42,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:45:42,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:45:42,181 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:45:42,181 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:45:41" (3/4) ... [2020-12-22 03:45:42,185 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:45:42,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:45:42,187 INFO L168 Benchmark]: Toolchain (without parser) took 2160.55 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 95.8 MB in the end (delta: 31.8 MB). Peak memory consumption was 32.3 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:42,188 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:45:42,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.62 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 115.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:42,190 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.19 ms. Allocated memory is still 153.1 MB. Free memory was 115.0 MB in the beginning and 112.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:42,191 INFO L168 Benchmark]: Boogie Preprocessor took 56.80 ms. Allocated memory is still 153.1 MB. Free memory was 112.9 MB in the beginning and 111.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:42,192 INFO L168 Benchmark]: RCFGBuilder took 1022.93 ms. Allocated memory is still 153.1 MB. Free memory was 111.0 MB in the beginning and 119.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:42,193 INFO L168 Benchmark]: TraceAbstraction took 664.96 ms. Allocated memory is still 153.1 MB. Free memory was 118.8 MB in the beginning and 96.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:42,193 INFO L168 Benchmark]: Witness Printer took 4.25 ms. Allocated memory is still 153.1 MB. Free memory was 96.3 MB in the beginning and 95.8 MB in the end (delta: 526.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:45:42,198 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 153.1 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 337.62 ms. Allocated memory is still 153.1 MB. Free memory was 127.4 MB in the beginning and 115.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.19 ms. Allocated memory is still 153.1 MB. Free memory was 115.0 MB in the beginning and 112.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.80 ms. Allocated memory is still 153.1 MB. Free memory was 112.9 MB in the beginning and 111.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1022.93 ms. Allocated memory is still 153.1 MB. Free memory was 111.0 MB in the beginning and 119.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 664.96 ms. Allocated memory is still 153.1 MB. Free memory was 118.8 MB in the beginning and 96.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Witness Printer took 4.25 ms. Allocated memory is still 153.1 MB. Free memory was 96.3 MB in the beginning and 95.8 MB in the end (delta: 526.4 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: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 151, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L156] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 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: 73 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=53occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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...