/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1010.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 11:43:33,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 11:43:33,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 11:43:33,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 11:43:33,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 11:43:33,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 11:43:33,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 11:43:33,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 11:43:33,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 11:43:33,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 11:43:33,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 11:43:33,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 11:43:33,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 11:43:33,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 11:43:33,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 11:43:33,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 11:43:33,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 11:43:33,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 11:43:33,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 11:43:33,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 11:43:33,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 11:43:33,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 11:43:33,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 11:43:33,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 11:43:33,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 11:43:33,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 11:43:33,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 11:43:33,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 11:43:33,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 11:43:33,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 11:43:33,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 11:43:33,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 11:43:33,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 11:43:33,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 11:43:33,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 11:43:33,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 11:43:33,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 11:43:33,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 11:43:33,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 11:43:33,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 11:43:33,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 11:43:33,316 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 11:43:33,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 11:43:33,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 11:43:33,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 11:43:33,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 11:43:33,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 11:43:33,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 11:43:33,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 11:43:33,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 11:43:33,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 11:43:33,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 11:43:33,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 11:43:33,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 11:43:33,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 11:43:33,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 11:43:33,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 11:43:33,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 11:43:33,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 11:43:33,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 11:43:33,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 11:43:33,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 11:43:33,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 11:43:33,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 11:43:33,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 11:43:33,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 11:43:33,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 11:43:33,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 11:43:33,642 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 11:43:33,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 11:43:33,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 11:43:33,646 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 11:43:33,647 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1010.c [2020-07-17 11:43:33,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aff6aa47b/ab32a126d2db483e88123ecdf25560ae/FLAG02344a9d1 [2020-07-17 11:43:34,197 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 11:43:34,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1010.c [2020-07-17 11:43:34,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aff6aa47b/ab32a126d2db483e88123ecdf25560ae/FLAG02344a9d1 [2020-07-17 11:43:34,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aff6aa47b/ab32a126d2db483e88123ecdf25560ae [2020-07-17 11:43:34,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 11:43:34,556 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 11:43:34,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 11:43:34,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 11:43:34,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 11:43:34,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:43:34" (1/1) ... [2020-07-17 11:43:34,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1962bef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:34, skipping insertion in model container [2020-07-17 11:43:34,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:43:34" (1/1) ... [2020-07-17 11:43:34,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 11:43:34,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 11:43:34,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:43:34,813 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 11:43:34,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:43:34,852 INFO L208 MainTranslator]: Completed translation [2020-07-17 11:43:34,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:34 WrapperNode [2020-07-17 11:43:34,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 11:43:34,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 11:43:34,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 11:43:34,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 11:43:34,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:34" (1/1) ... [2020-07-17 11:43:34,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:34" (1/1) ... [2020-07-17 11:43:34,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:34" (1/1) ... [2020-07-17 11:43:34,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:34" (1/1) ... [2020-07-17 11:43:34,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:34" (1/1) ... [2020-07-17 11:43:34,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:34" (1/1) ... [2020-07-17 11:43:34,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:34" (1/1) ... [2020-07-17 11:43:34,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 11:43:34,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 11:43:34,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 11:43:34,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 11:43:34,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:34" (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 [2020-07-17 11:43:35,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 11:43:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 11:43:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-17 11:43:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-07-17 11:43:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 11:43:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 11:43:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-17 11:43:35,041 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-17 11:43:35,041 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-07-17 11:43:35,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 11:43:35,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 11:43:35,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 11:43:35,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 11:43:35,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 11:43:35,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 11:43:35,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 11:43:35,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 11:43:35,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 11:43:35,305 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 11:43:35,305 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-17 11:43:35,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:43:35 BoogieIcfgContainer [2020-07-17 11:43:35,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 11:43:35,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 11:43:35,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 11:43:35,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 11:43:35,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 11:43:34" (1/3) ... [2020-07-17 11:43:35,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44251d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:43:35, skipping insertion in model container [2020-07-17 11:43:35,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:34" (2/3) ... [2020-07-17 11:43:35,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44251d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:43:35, skipping insertion in model container [2020-07-17 11:43:35,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:43:35" (3/3) ... [2020-07-17 11:43:35,316 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-07-17 11:43:35,327 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 11:43:35,334 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 11:43:35,350 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 11:43:35,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 11:43:35,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 11:43:35,374 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 11:43:35,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 11:43:35,374 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 11:43:35,374 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 11:43:35,374 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 11:43:35,374 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 11:43:35,395 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-17 11:43:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-17 11:43:35,400 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:43:35,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:43:35,401 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:43:35,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:43:35,406 INFO L82 PathProgramCache]: Analyzing trace with hash -156268844, now seen corresponding path program 1 times [2020-07-17 11:43:35,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:43:35,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224293195] [2020-07-17 11:43:35,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:43:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:43:35,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224293195] [2020-07-17 11:43:35,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:43:35,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 11:43:35,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313807239] [2020-07-17 11:43:35,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 11:43:35,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:43:35,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 11:43:35,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 11:43:35,668 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-07-17 11:43:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:43:35,825 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-07-17 11:43:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 11:43:35,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-17 11:43:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:43:35,838 INFO L225 Difference]: With dead ends: 48 [2020-07-17 11:43:35,838 INFO L226 Difference]: Without dead ends: 24 [2020-07-17 11:43:35,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 11:43:35,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-17 11:43:35,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-17 11:43:35,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-17 11:43:35,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2020-07-17 11:43:35,880 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 21 [2020-07-17 11:43:35,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:43:35,881 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2020-07-17 11:43:35,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 11:43:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2020-07-17 11:43:35,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 11:43:35,883 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:43:35,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:43:35,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 11:43:35,883 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:43:35,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:43:35,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1988246281, now seen corresponding path program 1 times [2020-07-17 11:43:35,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:43:35,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620610489] [2020-07-17 11:43:35,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:43:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:43:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:43:36,014 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 11:43:36,015 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 11:43:36,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 11:43:36,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 11:43:36 BoogieIcfgContainer [2020-07-17 11:43:36,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 11:43:36,049 INFO L168 Benchmark]: Toolchain (without parser) took 1492.63 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 123.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:36,049 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 11:43:36,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.19 ms. Allocated memory is still 144.7 MB. Free memory was 102.7 MB in the beginning and 92.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:36,051 INFO L168 Benchmark]: Boogie Preprocessor took 118.95 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 92.4 MB in the beginning and 179.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:36,052 INFO L168 Benchmark]: RCFGBuilder took 336.05 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 163.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:36,053 INFO L168 Benchmark]: TraceAbstraction took 736.16 ms. Allocated memory is still 201.3 MB. Free memory was 162.4 MB in the beginning and 123.5 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:36,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.19 ms. Allocated memory is still 144.7 MB. Free memory was 102.7 MB in the beginning and 92.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.95 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 92.4 MB in the beginning and 179.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.05 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 163.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 736.16 ms. Allocated memory is still 201.3 MB. Free memory was 162.4 MB in the beginning and 123.5 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 40]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L35] float x = 0.0f / 0.0f; [L36] CALL, EXPR fabs_float(x) VAL [\old(x)=9] [L15] __uint32_t ix; VAL [\old(x)=9, x=9] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type sf_u; [L23] sf_u.word = (ix & 0x7fffffff) [L24] EXPR sf_u.value [L24] (x) = sf_u.value [L26] return x; VAL [\old(x)=9, \result=12, ix=13, x=12] [L36] RET, EXPR fabs_float(x) VAL [fabs_float(x)=12, x=9] [L36] float res = fabs_float(x); [L39] CALL, EXPR isnan_float(res) VAL [\old(x)=12] [L12] return x != x; VAL [\old(x)=12, \result=0, x=12] [L39] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=12, x=9] [L39] COND TRUE !isnan_float(res) [L40] __VERIFIER_error() VAL [res=12, x=9] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 5 SDs, 0 SdLazy, 24 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 820 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...