/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:45:04,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:45:04,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:45:04,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:45:04,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:45:04,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:45:04,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:45:04,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:45:04,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:45:04,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:45:04,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:45:04,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:45:04,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:45:04,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:45:04,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:45:04,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:45:04,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:45:04,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:45:04,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:45:04,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:45:04,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:45:04,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:45:04,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:45:04,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:45:04,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:45:04,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:45:04,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:45:04,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:45:04,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:45:04,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:45:04,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:45:04,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:45:04,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:45:04,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:45:04,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:45:04,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:45:04,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:45:04,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:45:04,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:45:04,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:45:04,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:45:04,821 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 [2020-10-27 19:45:04,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:45:04,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:45:04,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:45:04,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:45:04,881 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:45:04,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:45:04,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:45:04,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:45:04,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:45:04,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:45:04,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:45:04,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:45:04,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:45:04,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:45:04,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:45:04,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:45:04,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:45:04,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:45:04,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:45:04,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:45:04,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:45:04,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:45:04,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:45:04,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:45:04,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:45:04,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:45:04,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:45:04,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:45:04,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:45:04,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:45:05,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:45:05,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:45:05,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:45:05,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:45:05,338 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:45:05,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270a.c [2020-10-27 19:45:05,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c19a2cdde/46baeae674334a9ab7a7723d1cab67ea/FLAG7896ba440 [2020-10-27 19:45:06,186 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:45:06,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1270a.c [2020-10-27 19:45:06,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c19a2cdde/46baeae674334a9ab7a7723d1cab67ea/FLAG7896ba440 [2020-10-27 19:45:06,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c19a2cdde/46baeae674334a9ab7a7723d1cab67ea [2020-10-27 19:45:06,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:45:06,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:45:06,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:45:06,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:45:06,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:45:06,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1caaf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06, skipping insertion in model container [2020-10-27 19:45:06,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:45:06,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:45:06,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:45:06,837 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:45:06,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:45:06,934 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:45:06,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06 WrapperNode [2020-10-27 19:45:06,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:45:06,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:45:06,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:45:06,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:45:06,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:07,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:07,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:07,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:45:07,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:45:07,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:45:07,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:45:07,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (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 [2020-10-27 19:45:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:45:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:45:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:45:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-27 19:45:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2020-10-27 19:45:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-27 19:45:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:45:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:45:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:45:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:45:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:45:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:45:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-27 19:45:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:45:07,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:45:07,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:45:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:45:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:45:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2020-10-27 19:45:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-27 19:45:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:45:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:45:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:45:07,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:45:08,065 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:45:08,065 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-10-27 19:45:08,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:08 BoogieIcfgContainer [2020-10-27 19:45:08,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:45:08,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:45:08,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:45:08,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:45:08,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:45:06" (1/3) ... [2020-10-27 19:45:08,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c967cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:08, skipping insertion in model container [2020-10-27 19:45:08,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (2/3) ... [2020-10-27 19:45:08,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c967cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:08, skipping insertion in model container [2020-10-27 19:45:08,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:08" (3/3) ... [2020-10-27 19:45:08,076 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270a.c [2020-10-27 19:45:08,091 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:45:08,098 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:45:08,113 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:45:08,143 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:45:08,143 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:45:08,143 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:45:08,143 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:45:08,144 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:45:08,144 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:45:08,144 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:45:08,144 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:45:08,164 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-10-27 19:45:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 19:45:08,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:08,174 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] [2020-10-27 19:45:08,174 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:08,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:08,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1055086694, now seen corresponding path program 1 times [2020-10-27 19:45:08,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:08,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275122014] [2020-10-27 19:45:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 19:45:08,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:45:08,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-27 19:45:08,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:08,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 19:45:08,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:08,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:45:08,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:08,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 19:45:08,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:08,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:08,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:09,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 19:45:09,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:45:09,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 19:45:09,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:09,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 19:45:09,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:09,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 19:45:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:09,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:09,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:45:09,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:09,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 19:45:09,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:45:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:09,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:45:09,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275122014] [2020-10-27 19:45:09,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:09,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:45:09,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221661087] [2020-10-27 19:45:09,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:45:09,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:09,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:45:09,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:45:09,197 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 4 states. [2020-10-27 19:45:09,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:09,653 INFO L93 Difference]: Finished difference Result 201 states and 319 transitions. [2020-10-27 19:45:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:45:09,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-27 19:45:09,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:09,666 INFO L225 Difference]: With dead ends: 201 [2020-10-27 19:45:09,666 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 19:45:09,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:45:09,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 19:45:09,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-27 19:45:09,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-27 19:45:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2020-10-27 19:45:09,738 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 29 [2020-10-27 19:45:09,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:09,739 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2020-10-27 19:45:09,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:45:09,739 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2020-10-27 19:45:09,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 19:45:09,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:09,744 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] [2020-10-27 19:45:09,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:45:09,744 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:09,748 INFO L82 PathProgramCache]: Analyzing trace with hash 489362538, now seen corresponding path program 1 times [2020-10-27 19:45:09,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:09,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574424097] [2020-10-27 19:45:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:45:09,848 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:45:09,848 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:45:09,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:45:09,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:45:09 BoogieIcfgContainer [2020-10-27 19:45:09,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:45:09,886 INFO L168 Benchmark]: Toolchain (without parser) took 3407.11 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 80.7 MB in the end (delta: 45.0 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:09,886 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:45:09,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 111.3 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:09,888 INFO L168 Benchmark]: Boogie Preprocessor took 79.13 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 108.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:09,889 INFO L168 Benchmark]: RCFGBuilder took 1051.64 ms. Allocated memory is still 151.0 MB. Free memory was 108.5 MB in the beginning and 99.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:09,890 INFO L168 Benchmark]: TraceAbstraction took 1813.98 ms. Allocated memory is still 151.0 MB. Free memory was 99.3 MB in the beginning and 80.7 MB in the end (delta: 18.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:09,894 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 446.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 111.3 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.13 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 108.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1051.64 ms. Allocated memory is still 151.0 MB. Free memory was 108.5 MB in the beginning and 99.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1813.98 ms. Allocated memory is still 151.0 MB. Free memory was 99.3 MB in the beginning and 80.7 MB in the end (delta: 18.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 220. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L231] float x = 1.0f / 0.0f; [L232] float y = __VERIFIER_nondet_float(); [L233] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL [L99] COND TRUE hb > ha [L100] a = y [L101] b = x [L102] j = ha [L103] ha = hb [L104] hb = j [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; [L233] RET, EXPR __ieee754_hypotf(x, y) [L233] float res = __ieee754_hypotf(x, y); [L235] CALL, EXPR isinf_float(res) [L214] __int32_t ix; [L216] ieee_float_shape_type gf_u; [L217] gf_u.value = (x) [L218] EXPR gf_u.word [L218] (ix) = gf_u.word [L220] ix &= 0x7fffffff [L221] return ((ix) == 0x7f800000L); [L235] RET, EXPR isinf_float(res) [L235] COND TRUE !isinf_float(res) [L236] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1270a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 106 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 10 SDslu, 101 SDs, 0 SdLazy, 129 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 2464 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...