/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0740.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:16:16,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:16:16,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:16:16,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:16:16,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:16:16,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:16:16,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:16:16,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:16:16,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:16:16,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:16:16,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:16:16,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:16:16,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:16:16,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:16:16,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:16:16,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:16:16,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:16:16,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:16:16,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:16:16,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:16:16,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:16:16,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:16:16,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:16:16,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:16:16,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:16:16,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:16:16,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:16:16,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:16:16,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:16:16,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:16:16,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:16:16,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:16:16,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:16:16,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:16:16,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:16:16,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:16:16,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:16:16,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:16:16,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:16:16,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:16:16,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:16:16,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:16:16,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:16:16,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:16:16,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:16:16,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:16:16,498 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:16:16,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:16:16,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:16:16,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:16:16,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:16:16,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:16:16,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:16:16,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:16:16,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:16:16,501 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:16:16,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:16:16,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:16:16,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:16:16,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:16:16,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:16:16,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:16:16,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:16:16,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:16:16,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:16:16,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:16:16,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:16:16,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:16:16,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:16:16,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:16:16,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:16:16,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:16:16,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:16:16,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:16:16,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:16:16,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:16:16,825 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:16:16,825 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0740.c [2020-08-21 13:16:16,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/193597f99/8f9da76a66e047bf9359496b3ee57cfd/FLAG3450eb95e [2020-08-21 13:16:17,326 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:16:17,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0740.c [2020-08-21 13:16:17,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/193597f99/8f9da76a66e047bf9359496b3ee57cfd/FLAG3450eb95e [2020-08-21 13:16:17,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/193597f99/8f9da76a66e047bf9359496b3ee57cfd [2020-08-21 13:16:17,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:16:17,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:16:17,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:17,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:16:17,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:16:17,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:17" (1/1) ... [2020-08-21 13:16:17,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348d845f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:17, skipping insertion in model container [2020-08-21 13:16:17,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:16:17" (1/1) ... [2020-08-21 13:16:17,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:16:17,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:16:17,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:17,989 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:16:18,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:16:18,136 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:16:18,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:18 WrapperNode [2020-08-21 13:16:18,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:16:18,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:16:18,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:16:18,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:16:18,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:18" (1/1) ... [2020-08-21 13:16:18,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:18" (1/1) ... [2020-08-21 13:16:18,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:18" (1/1) ... [2020-08-21 13:16:18,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:18" (1/1) ... [2020-08-21 13:16:18,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:18" (1/1) ... [2020-08-21 13:16:18,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:18" (1/1) ... [2020-08-21 13:16:18,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:18" (1/1) ... [2020-08-21 13:16:18,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:16:18,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:16:18,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:16:18,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:16:18,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 13:16:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:16:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:16:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-08-21 13:16:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-08-21 13:16:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:16:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:16:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-21 13:16:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-08-21 13:16:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-08-21 13:16:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:16:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 13:16:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:16:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:16:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:16:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 13:16:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:16:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:16:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:16:18,693 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:16:18,693 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 13:16:18,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:18 BoogieIcfgContainer [2020-08-21 13:16:18,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:16:18,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:16:18,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:16:18,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:16:18,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:16:17" (1/3) ... [2020-08-21 13:16:18,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4934ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:18, skipping insertion in model container [2020-08-21 13:16:18,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:16:18" (2/3) ... [2020-08-21 13:16:18,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4934ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:16:18, skipping insertion in model container [2020-08-21 13:16:18,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:16:18" (3/3) ... [2020-08-21 13:16:18,714 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0740.c [2020-08-21 13:16:18,724 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:16:18,735 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:16:18,750 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:16:18,771 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:16:18,771 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:16:18,772 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:16:18,772 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:16:18,772 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:16:18,772 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:16:18,772 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:16:18,772 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:16:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-08-21 13:16:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 13:16:18,797 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:18,798 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] [2020-08-21 13:16:18,799 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:18,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:18,804 INFO L82 PathProgramCache]: Analyzing trace with hash 159633202, now seen corresponding path program 1 times [2020-08-21 13:16:18,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:18,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043763469] [2020-08-21 13:16:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:18,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:16:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:19,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:16:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:19,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:16:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:16:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:16:19,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043763469] [2020-08-21 13:16:19,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:16:19,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:16:19,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823238197] [2020-08-21 13:16:19,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:16:19,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:16:19,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:16:19,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:16:19,075 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-08-21 13:16:19,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:16:19,302 INFO L93 Difference]: Finished difference Result 84 states and 118 transitions. [2020-08-21 13:16:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:16:19,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-08-21 13:16:19,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:16:19,315 INFO L225 Difference]: With dead ends: 84 [2020-08-21 13:16:19,316 INFO L226 Difference]: Without dead ends: 42 [2020-08-21 13:16:19,319 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 [2020-08-21 13:16:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-21 13:16:19,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-21 13:16:19,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 13:16:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-08-21 13:16:19,366 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 21 [2020-08-21 13:16:19,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:16:19,367 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-08-21 13:16:19,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:16:19,367 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-08-21 13:16:19,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 13:16:19,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:16:19,369 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] [2020-08-21 13:16:19,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:16:19,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:16:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:16:19,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1643831456, now seen corresponding path program 1 times [2020-08-21 13:16:19,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:16:19,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853122932] [2020-08-21 13:16:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:16:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:16:19,425 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:16:19,425 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:16:19,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:16:19,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:16:19 BoogieIcfgContainer [2020-08-21 13:16:19,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:16:19,451 INFO L168 Benchmark]: Toolchain (without parser) took 1686.80 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 111.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:19,452 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-21 13:16:19,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.98 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 182.5 MB in the end (delta: -80.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:19,454 INFO L168 Benchmark]: Boogie Preprocessor took 57.02 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 180.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:19,455 INFO L168 Benchmark]: RCFGBuilder took 504.10 ms. Allocated memory is still 203.9 MB. Free memory was 179.1 MB in the beginning and 158.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:19,456 INFO L168 Benchmark]: TraceAbstraction took 744.91 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 111.4 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:16:19,460 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.98 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 182.5 MB in the end (delta: -80.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.02 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 180.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 504.10 ms. Allocated memory is still 203.9 MB. Free memory was 179.1 MB in the beginning and 158.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 744.91 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 111.4 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 97]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someBinaryArithmeticFLOAToperation at line 30, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L91] float x = -1.0f / 0.0f; [L93] CALL, EXPR __ieee754_sqrtf(x) [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; [L93] RET, EXPR __ieee754_sqrtf(x) [L93] float res = __ieee754_sqrtf(x); [L96] CALL, EXPR isnan_float(res) [L13] return x != x; [L96] RET, EXPR isnan_float(res) [L96] COND TRUE !isnan_float(res) [L97] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 53 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=46occurred 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, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 940 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...