/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_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:42:37,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:42:37,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:42:37,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:42:37,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:42:37,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:42:37,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:42:37,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:42:37,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:42:37,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:42:37,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:42:37,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:42:37,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:42:37,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:42:37,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:42:37,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:42:37,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:42:37,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:42:37,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:42:37,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:42:37,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:42:37,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:42:37,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:42:37,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:42:37,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:42:37,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:42:37,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:42:37,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:42:37,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:42:37,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:42:37,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:42:37,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:42:37,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:42:37,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:42:37,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:42:37,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:42:37,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:42:37,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:42:37,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:42:37,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:42:37,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:42:37,911 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 07:42:37,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:42:37,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:42:37,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:42:37,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:42:37,968 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:42:37,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:42:37,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:42:37,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:42:37,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:42:37,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:42:37,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:42:37,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:42:37,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:42:37,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:42:37,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:42:37,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:42:37,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:42:37,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:42:37,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:42:37,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:42:37,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:42:37,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:42:37,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:42:37,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:42:37,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:42:37,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:42:37,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:42:37,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:42:37,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:42:37,975 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 07:42:38,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:42:38,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:42:38,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:42:38,568 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:42:38,569 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:42:38,570 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c [2020-09-25 07:42:38,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89c08dace/053ef8c24cca4996815d10e1490304e6/FLAGbaf296594 [2020-09-25 07:42:39,234 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:42:39,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c [2020-09-25 07:42:39,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89c08dace/053ef8c24cca4996815d10e1490304e6/FLAGbaf296594 [2020-09-25 07:42:39,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89c08dace/053ef8c24cca4996815d10e1490304e6 [2020-09-25 07:42:39,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:42:39,616 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:42:39,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:42:39,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:42:39,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:42:39,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:42:39" (1/1) ... [2020-09-25 07:42:39,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678b2c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:39, skipping insertion in model container [2020-09-25 07:42:39,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:42:39" (1/1) ... [2020-09-25 07:42:39,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:42:39,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:42:39,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:42:39,995 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:42:40,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:42:40,068 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:42:40,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:40 WrapperNode [2020-09-25 07:42:40,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:42:40,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:42:40,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:42:40,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:42:40,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:40" (1/1) ... [2020-09-25 07:42:40,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:40" (1/1) ... [2020-09-25 07:42:40,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:40" (1/1) ... [2020-09-25 07:42:40,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:40" (1/1) ... [2020-09-25 07:42:40,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:40" (1/1) ... [2020-09-25 07:42:40,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:40" (1/1) ... [2020-09-25 07:42:40,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:40" (1/1) ... [2020-09-25 07:42:40,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:42:40,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:42:40,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:42:40,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:42:40,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:40" (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 07:42:40,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:42:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:42:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-09-25 07:42:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-25 07:42:40,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:42:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:42:40,287 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-09-25 07:42:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:42:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 07:42:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:42:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:42:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:42:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 07:42:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-25 07:42:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:42:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:42:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:42:40,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:42:40,613 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 07:42:40,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:42:40 BoogieIcfgContainer [2020-09-25 07:42:40,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:42:40,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:42:40,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:42:40,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:42:40,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:42:39" (1/3) ... [2020-09-25 07:42:40,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d448be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:42:40, skipping insertion in model container [2020-09-25 07:42:40,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:40" (2/3) ... [2020-09-25 07:42:40,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d448be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:42:40, skipping insertion in model container [2020-09-25 07:42:40,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:42:40" (3/3) ... [2020-09-25 07:42:40,630 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012b.c [2020-09-25 07:42:40,643 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:42:40,655 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:42:40,681 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:42:40,721 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:42:40,721 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:42:40,722 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:42:40,722 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:42:40,722 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:42:40,722 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:42:40,722 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:42:40,723 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:42:40,750 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-25 07:42:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 07:42:40,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:40,761 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] [2020-09-25 07:42:40,761 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:40,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:40,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1851120069, now seen corresponding path program 1 times [2020-09-25 07:42:40,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:40,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063121645] [2020-09-25 07:42:40,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:40,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:41,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:41,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 07:42:41,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:42:41,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 07:42:41,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:41,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:41,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:41,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 07:42:41,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:41,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:42:41,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:42:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:41,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:41,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:42:41,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:41,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:42:41,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:41,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:41,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:41,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:41,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:41,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:41,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:42:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:41,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:41,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:41,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:42:41,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:42:41,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:42:41,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:41,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:41,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 07:42:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:41,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:41,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:41,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:42:41,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:41,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:42:41,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:41,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 07:42:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:41,332 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 07:42:41,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063121645] [2020-09-25 07:42:41,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:42:41,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:42:41,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067429395] [2020-09-25 07:42:41,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:42:41,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:42:41,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:42:41,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:42:41,373 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-09-25 07:42:41,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:42:41,609 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2020-09-25 07:42:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:42:41,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-09-25 07:42:41,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:42:41,624 INFO L225 Difference]: With dead ends: 118 [2020-09-25 07:42:41,624 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 07:42:41,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:42:41,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 07:42:41,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 07:42:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 07:42:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 57 transitions. [2020-09-25 07:42:41,688 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 57 transitions. Word has length 30 [2020-09-25 07:42:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:42:41,688 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 57 transitions. [2020-09-25 07:42:41,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:42:41,689 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 57 transitions. [2020-09-25 07:42:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 07:42:41,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:41,691 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] [2020-09-25 07:42:41,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:42:41,692 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:41,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1434482942, now seen corresponding path program 1 times [2020-09-25 07:42:41,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:41,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085316037] [2020-09-25 07:42:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:42:41,774 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:42:41,774 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:42:41,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:42:41,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:42:41 BoogieIcfgContainer [2020-09-25 07:42:41,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:42:41,809 INFO L168 Benchmark]: Toolchain (without parser) took 2196.27 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 100.8 MB in the beginning and 95.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:41,810 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:42:41,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.18 ms. Allocated memory is still 137.9 MB. Free memory was 100.2 MB in the beginning and 89.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:41,812 INFO L168 Benchmark]: Boogie Preprocessor took 139.72 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 89.6 MB in the beginning and 177.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:41,813 INFO L168 Benchmark]: RCFGBuilder took 409.38 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 157.4 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:41,814 INFO L168 Benchmark]: TraceAbstraction took 1184.16 ms. Allocated memory is still 199.8 MB. Free memory was 156.7 MB in the beginning and 95.5 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:41,822 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 453.18 ms. Allocated memory is still 137.9 MB. Free memory was 100.2 MB in the beginning and 89.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.72 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 89.6 MB in the beginning and 177.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.38 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 157.4 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1184.16 ms. Allocated memory is still 199.8 MB. Free memory was 156.7 MB in the beginning and 95.5 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 51]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L46] float x = -1.0f / 0.0f; [L47] CALL, EXPR fabs_float(x) [L12] __uint32_t ix; [L14] ieee_float_shape_type gf_u; [L15] gf_u.value = (x) [L16] EXPR gf_u.word [L16] (ix) = gf_u.word [L19] ieee_float_shape_type sf_u; [L20] sf_u.word = (ix & 0x7fffffff) [L21] EXPR sf_u.value [L21] (x) = sf_u.value [L23] return x; [L47] RET, EXPR fabs_float(x) [L47] float res = fabs_float(x); [L50] CALL, EXPR isinf_float(res) [L28] __int32_t ix; [L30] ieee_float_shape_type gf_u; [L31] gf_u.value = (x) [L32] EXPR gf_u.word [L32] (ix) = gf_u.word [L34] ix &= 0x7fffffff [L35] return ((ix) == 0x7f800000L); [L50] RET, EXPR isinf_float(res) [L50] COND TRUE !isinf_float(res) [L51] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 11 SDslu, 40 SDs, 0 SdLazy, 70 SolverSat, 5 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 0.3s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1798 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...