/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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:13,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:13,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:13,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:13,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:13,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:13,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:13,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:13,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:13,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:13,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:13,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:46:13,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:13,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:13,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:13,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:13,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:13,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:13,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:13,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:13,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:13,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:13,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:13,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:13,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:13,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:13,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:13,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:13,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:13,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:13,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:13,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:13,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:13,550 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:13,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:13,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:13,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:13,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:13,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:13,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:13,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:13,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:13,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:13,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:13,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:13,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:13,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:13,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:13,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:13,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:13,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:13,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:13,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:13,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:13,556 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:13,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:13,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:13,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:13,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:13,967 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:13,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1092a.c [2020-12-22 03:46:14,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c9e18f3/83a1b288eeca4799ad7399822ed038be/FLAGf90a94745 [2020-12-22 03:46:14,727 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:14,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1092a.c [2020-12-22 03:46:14,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c9e18f3/83a1b288eeca4799ad7399822ed038be/FLAGf90a94745 [2020-12-22 03:46:15,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c9e18f3/83a1b288eeca4799ad7399822ed038be [2020-12-22 03:46:15,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:15,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:15,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:15,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:15,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:15,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:15" (1/1) ... [2020-12-22 03:46:15,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb8492b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15, skipping insertion in model container [2020-12-22 03:46:15,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:15" (1/1) ... [2020-12-22 03:46:15,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:15,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:15,297 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_1092a.c[2110,2123] [2020-12-22 03:46:15,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:15,318 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:15,382 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_1092a.c[2110,2123] [2020-12-22 03:46:15,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:15,412 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:15,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15 WrapperNode [2020-12-22 03:46:15,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:15,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:15,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:15,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:15,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15" (1/1) ... [2020-12-22 03:46:15,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15" (1/1) ... [2020-12-22 03:46:15,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:15,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:15,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:15,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:15,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15" (1/1) ... [2020-12-22 03:46:15,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15" (1/1) ... [2020-12-22 03:46:15,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15" (1/1) ... [2020-12-22 03:46:15,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15" (1/1) ... [2020-12-22 03:46:15,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15" (1/1) ... [2020-12-22 03:46:15,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15" (1/1) ... [2020-12-22 03:46:15,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15" (1/1) ... [2020-12-22 03:46:15,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:15,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:15,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:15,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:15,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15" (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 03:46:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:16,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:16,114 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-22 03:46:16,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:16 BoogieIcfgContainer [2020-12-22 03:46:16,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:16,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:16,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:16,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:16,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:15" (1/3) ... [2020-12-22 03:46:16,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea36b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:16, skipping insertion in model container [2020-12-22 03:46:16,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:15" (2/3) ... [2020-12-22 03:46:16,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea36b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:16, skipping insertion in model container [2020-12-22 03:46:16,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:16" (3/3) ... [2020-12-22 03:46:16,126 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-12-22 03:46:16,133 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:16,138 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:16,162 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:16,195 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:16,195 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:16,196 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:16,196 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:16,196 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:16,196 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:16,196 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:16,197 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-22 03:46:16,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:46:16,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:16,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:16,219 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:16,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:16,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1046119076, now seen corresponding path program 1 times [2020-12-22 03:46:16,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:16,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027649069] [2020-12-22 03:46:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:16,395 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 03:46:16,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027649069] [2020-12-22 03:46:16,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:16,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:16,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684288213] [2020-12-22 03:46:16,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:16,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:16,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:16,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:16,420 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-22 03:46:16,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:16,442 INFO L93 Difference]: Finished difference Result 64 states and 102 transitions. [2020-12-22 03:46:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:16,443 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 03:46:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:16,454 INFO L225 Difference]: With dead ends: 64 [2020-12-22 03:46:16,454 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 03:46:16,458 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 03:46:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 03:46:16,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-22 03:46:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-22 03:46:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-12-22 03:46:16,497 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 10 [2020-12-22 03:46:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:16,497 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-12-22 03:46:16,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-12-22 03:46:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:46:16,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:16,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:16,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:16,499 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:16,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:16,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1289188121, now seen corresponding path program 1 times [2020-12-22 03:46:16,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:16,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280916170] [2020-12-22 03:46:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:16,552 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:16,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:16,651 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:16,652 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:16,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:16,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:16 BoogieIcfgContainer [2020-12-22 03:46:16,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:16,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:16,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:16,699 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:16,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:16" (3/4) ... [2020-12-22 03:46:16,703 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:16,703 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:16,707 INFO L168 Benchmark]: Toolchain (without parser) took 1637.09 ms. Allocated memory is still 174.1 MB. Free memory was 148.3 MB in the beginning and 92.1 MB in the end (delta: 56.2 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:16,709 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 174.1 MB. Free memory is still 146.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:16,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.70 ms. Allocated memory is still 174.1 MB. Free memory was 148.3 MB in the beginning and 137.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:16,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.69 ms. Allocated memory is still 174.1 MB. Free memory was 137.8 MB in the beginning and 136.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:16,713 INFO L168 Benchmark]: Boogie Preprocessor took 78.01 ms. Allocated memory is still 174.1 MB. Free memory was 135.7 MB in the beginning and 134.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:16,714 INFO L168 Benchmark]: RCFGBuilder took 535.06 ms. Allocated memory is still 174.1 MB. Free memory was 134.6 MB in the beginning and 115.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:16,715 INFO L168 Benchmark]: TraceAbstraction took 580.11 ms. Allocated memory is still 174.1 MB. Free memory was 114.7 MB in the beginning and 92.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:16,717 INFO L168 Benchmark]: Witness Printer took 4.91 ms. Allocated memory is still 174.1 MB. Free memory was 92.2 MB in the beginning and 92.1 MB in the end (delta: 123.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:16,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 174.1 MB. Free memory is still 146.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 341.70 ms. Allocated memory is still 174.1 MB. Free memory was 148.3 MB in the beginning and 137.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 86.69 ms. Allocated memory is still 174.1 MB. Free memory was 137.8 MB in the beginning and 136.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.01 ms. Allocated memory is still 174.1 MB. Free memory was 135.7 MB in the beginning and 134.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 535.06 ms. Allocated memory is still 174.1 MB. Free memory was 134.6 MB in the beginning and 115.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 580.11 ms. Allocated memory is still 174.1 MB. Free memory was 114.7 MB in the beginning and 92.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Witness Printer took 4.91 ms. Allocated memory is still 174.1 MB. Free memory was 92.2 MB in the beginning and 92.1 MB in the end (delta: 123.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 98]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 43, overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 93, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryDOUBLEComparisonOperation at line 97. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L93] double x = -0.0; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] COND TRUE j0 < 20 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L32] COND FALSE !(j0 < 0) [L43] i = (0x000fffff) >> j0 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L44] COND TRUE ((i0 & i) | i1) == 0 [L45] return x; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L94] double res = ceil_double(x); [L97] COND TRUE res != x VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] reach_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 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=33occurred 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, 21 NumberOfCodeBlocks, 21 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...