/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:42:32,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:42:32,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:42:32,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:42:32,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:42:32,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:42:32,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:42:32,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:42:32,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:42:32,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:42:32,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:42:32,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:42:32,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:42:32,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:42:32,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:42:32,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:42:32,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:42:32,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:42:32,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:42:32,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:42:32,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:42:32,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:42:32,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:42:32,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:42:32,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:42:32,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:42:32,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:42:32,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:42:32,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:42:32,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:42:32,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:42:32,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:42:32,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:42:32,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:42:32,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:42:32,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:42:32,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:42:32,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:42:32,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:42:32,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:42:32,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:42:32,468 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 [2020-09-25 07:42:32,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:42:32,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:42:32,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:42:32,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:42:32,498 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:42:32,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:42:32,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:42:32,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:42:32,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:42:32,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:42:32,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:42:32,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:42:32,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:42:32,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:42:32,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:42:32,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:42:32,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:42:32,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:42:32,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:42:32,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:42:32,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:42:32,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:42:32,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:42:32,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:42:32,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:42:32,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:42:32,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:42:32,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:42:32,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:42:32,504 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:42:32,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:42:33,003 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:42:33,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:42:33,011 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:42:33,013 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:42:33,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-09-25 07:42:33,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2edd12673/0178c7c09b284fc0b8e0a649e48141ef/FLAG25159372a [2020-09-25 07:42:33,700 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:42:33,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-09-25 07:42:33,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2edd12673/0178c7c09b284fc0b8e0a649e48141ef/FLAG25159372a [2020-09-25 07:42:34,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2edd12673/0178c7c09b284fc0b8e0a649e48141ef [2020-09-25 07:42:34,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:42:34,041 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:42:34,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:42:34,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:42:34,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:42:34,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:42:34" (1/1) ... [2020-09-25 07:42:34,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef7a733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:34, skipping insertion in model container [2020-09-25 07:42:34,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:42:34" (1/1) ... [2020-09-25 07:42:34,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:42:34,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:42:34,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:42:34,401 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:42:34,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:42:34,469 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:42:34,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:34 WrapperNode [2020-09-25 07:42:34,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:42:34,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:42:34,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:42:34,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:42:34,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:34" (1/1) ... [2020-09-25 07:42:34,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:34" (1/1) ... [2020-09-25 07:42:34,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:34" (1/1) ... [2020-09-25 07:42:34,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:34" (1/1) ... [2020-09-25 07:42:34,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:34" (1/1) ... [2020-09-25 07:42:34,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:34" (1/1) ... [2020-09-25 07:42:34,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:34" (1/1) ... [2020-09-25 07:42:34,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:42:34,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:42:34,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:42:34,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:42:34,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:34" (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 [2020-09-25 07:42:34,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:42:34,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:42:34,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-09-25 07:42:34,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-25 07:42:34,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:42:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:42:34,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-25 07:42:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-09-25 07:42:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:42:34,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 07:42:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:42:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:42:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:42:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 07:42:34,717 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-25 07:42:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:42:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:42:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:42:35,212 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:42:35,216 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 07:42:35,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:42:35 BoogieIcfgContainer [2020-09-25 07:42:35,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:42:35,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:42:35,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:42:35,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:42:35,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:42:34" (1/3) ... [2020-09-25 07:42:35,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d1cdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:42:35, skipping insertion in model container [2020-09-25 07:42:35,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:34" (2/3) ... [2020-09-25 07:42:35,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d1cdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:42:35, skipping insertion in model container [2020-09-25 07:42:35,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:42:35" (3/3) ... [2020-09-25 07:42:35,240 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2020-09-25 07:42:35,252 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:42:35,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:42:35,286 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:42:35,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:42:35,332 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:42:35,332 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:42:35,332 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:42:35,332 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:42:35,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:42:35,332 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:42:35,333 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:42:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2020-09-25 07:42:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 07:42:35,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:35,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:42:35,382 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:35,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:35,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1347664399, now seen corresponding path program 1 times [2020-09-25 07:42:35,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:35,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746388881] [2020-09-25 07:42:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:35,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:35,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:35,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:35,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 07:42:35,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:42:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 07:42:35,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:35,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 07:42:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:42:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:42:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:35,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:35,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:42:35,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:35,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:42:35,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:35,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:35,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:42:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:35,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:35,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:35,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:42:35,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:42:35,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 07:42:35,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:35,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:35,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:35,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:35,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:35,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 07:42:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:35,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:35,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:42:35,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:35,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:42:35,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:35,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:35,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 07:42:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:35,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:42:36,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746388881] [2020-09-25 07:42:36,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:42:36,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:42:36,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740075462] [2020-09-25 07:42:36,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:42:36,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:42:36,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:42:36,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:42:36,049 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states. [2020-09-25 07:42:36,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:42:36,477 INFO L93 Difference]: Finished difference Result 212 states and 251 transitions. [2020-09-25 07:42:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:42:36,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-25 07:42:36,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:42:36,494 INFO L225 Difference]: With dead ends: 212 [2020-09-25 07:42:36,495 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 07:42:36,500 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 [2020-09-25 07:42:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 07:42:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-25 07:42:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 07:42:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2020-09-25 07:42:36,556 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 41 [2020-09-25 07:42:36,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:42:36,556 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2020-09-25 07:42:36,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:42:36,557 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2020-09-25 07:42:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 07:42:36,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:36,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:42:36,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:42:36,560 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:36,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:36,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1528682335, now seen corresponding path program 1 times [2020-09-25 07:42:36,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:36,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45502265] [2020-09-25 07:42:36,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:42:36,619 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:42:36,619 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:42:36,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:42:36,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:42:36 BoogieIcfgContainer [2020-09-25 07:42:36,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:42:36,664 INFO L168 Benchmark]: Toolchain (without parser) took 2625.93 ms. Allocated memory was 137.4 MB in the beginning and 229.1 MB in the end (delta: 91.8 MB). Free memory was 100.4 MB in the beginning and 187.1 MB in the end (delta: -86.7 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:36,665 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:42:36,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.28 ms. Allocated memory is still 137.4 MB. Free memory was 99.8 MB in the beginning and 88.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:36,667 INFO L168 Benchmark]: Boogie Preprocessor took 151.87 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 88.0 MB in the beginning and 176.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:36,667 INFO L168 Benchmark]: RCFGBuilder took 603.22 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 148.7 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:36,668 INFO L168 Benchmark]: TraceAbstraction took 1430.81 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 148.0 MB in the beginning and 187.1 MB in the end (delta: -39.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:42:36,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 428.28 ms. Allocated memory is still 137.4 MB. Free memory was 99.8 MB in the beginning and 88.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.87 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 88.0 MB in the beginning and 176.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 603.22 ms. Allocated memory is still 199.8 MB. Free memory was 176.7 MB in the beginning and 148.7 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1430.81 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 148.0 MB in the beginning and 187.1 MB in the end (delta: -39.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 107]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 27, overapproximation of bitwiseAnd at line 89. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L101] float x = 1.0f / 0.0f; [L103] CALL, EXPR __ieee754_sqrtf(x) [L15] float z; [L16] __uint32_t r, hx; [L17] __int32_t ix, s, q, m, t, i; [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (ix) = gf_u.word [L24] hx = ix & 0x7fffffff [L26] COND TRUE !((hx) < 0x7f800000L) [L27] return x * x + x; [L103] RET, EXPR __ieee754_sqrtf(x) [L103] float res = __ieee754_sqrtf(x); [L106] CALL, EXPR isinf_float(res) [L83] __int32_t ix; [L85] ieee_float_shape_type gf_u; [L86] gf_u.value = (x) [L87] EXPR gf_u.word [L87] (ix) = gf_u.word [L89] ix &= 0x7fffffff [L90] return ((ix) == 0x7f800000L); [L106] RET, EXPR isinf_float(res) [L106] COND TRUE !isinf_float(res) [L107] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 117 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 27 SDslu, 93 SDs, 0 SdLazy, 127 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=117occurred 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, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3160 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...