/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 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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0910b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:19:11,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:19:11,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:19:11,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:19:11,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:19:11,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:19:11,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:19:11,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:19:11,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:19:11,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:19:11,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:19:11,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:19:11,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:19:11,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:19:11,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:19:11,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:19:11,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:19:11,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:19:11,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:19:11,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:19:11,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:19:11,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:19:11,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:19:11,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:19:11,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:19:11,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:19:11,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:19:11,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:19:11,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:19:11,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:19:11,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:19:11,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:19:11,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:19:11,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:19:11,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:19:11,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:19:11,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:19:11,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:19:11,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:19:11,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:19:11,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:19:11,906 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 [2020-10-14 23:19:11,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:19:11,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:19:11,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:19:11,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:19:11,947 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:19:11,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:19:11,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:19:11,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:19:11,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:19:11,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:19:11,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:19:11,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:19:11,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:19:11,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:19:11,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:19:11,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:19:11,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:19:11,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:19:11,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:19:11,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:19:11,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:19:11,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:19:11,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:19:11,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:19:11,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:19:11,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:19:11,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:19:11,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:19:11,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:19:11,954 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 -> 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:19:12,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:19:12,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:19:12,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:19:12,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:19:12,297 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:19:12,298 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0910b.c [2020-10-14 23:19:12,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ba58dde5/0d6879bb0018404a88617a14ec5ca555/FLAGa6eff5df3 [2020-10-14 23:19:12,811 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:19:12,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0910b.c [2020-10-14 23:19:12,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ba58dde5/0d6879bb0018404a88617a14ec5ca555/FLAGa6eff5df3 [2020-10-14 23:19:13,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ba58dde5/0d6879bb0018404a88617a14ec5ca555 [2020-10-14 23:19:13,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:19:13,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:19:13,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:19:13,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:19:13,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:19:13,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:13" (1/1) ... [2020-10-14 23:19:13,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5badac6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:13, skipping insertion in model container [2020-10-14 23:19:13,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:13" (1/1) ... [2020-10-14 23:19:13,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:19:13,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:19:13,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:19:13,511 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:19:13,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:19:13,682 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:19:13,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:13 WrapperNode [2020-10-14 23:19:13,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:19:13,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:19:13,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:19:13,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:19:13,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:13" (1/1) ... [2020-10-14 23:19:13,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:13" (1/1) ... [2020-10-14 23:19:13,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:13" (1/1) ... [2020-10-14 23:19:13,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:13" (1/1) ... [2020-10-14 23:19:13,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:13" (1/1) ... [2020-10-14 23:19:13,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:13" (1/1) ... [2020-10-14 23:19:13,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:13" (1/1) ... [2020-10-14 23:19:13,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:19:13,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:19:13,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:19:13,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:19:13,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:13" (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 [2020-10-14 23:19:13,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:19:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:19:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-14 23:19:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2020-10-14 23:19:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:19:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:19:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 23:19:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-14 23:19:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:19:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:19:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:19:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:19:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2020-10-14 23:19:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:19:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:19:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:19:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:19:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:19:14,156 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:19:14,156 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-14 23:19:14,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:19:14 BoogieIcfgContainer [2020-10-14 23:19:14,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:19:14,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:19:14,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:19:14,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:19:14,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:19:13" (1/3) ... [2020-10-14 23:19:14,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1208395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:19:14, skipping insertion in model container [2020-10-14 23:19:14,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:13" (2/3) ... [2020-10-14 23:19:14,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1208395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:19:14, skipping insertion in model container [2020-10-14 23:19:14,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:19:14" (3/3) ... [2020-10-14 23:19:14,171 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0910b.c [2020-10-14 23:19:14,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:19:14,197 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:19:14,215 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:19:14,236 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:19:14,236 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:19:14,236 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:19:14,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:19:14,236 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:19:14,236 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:19:14,237 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:19:14,237 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:19:14,254 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-14 23:19:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:19:14,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:14,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:14,262 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:14,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:14,267 INFO L82 PathProgramCache]: Analyzing trace with hash -336962092, now seen corresponding path program 1 times [2020-10-14 23:19:14,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:14,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248959651] [2020-10-14 23:19:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:14,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:14,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:19:14,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:19:14,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 23:19:14,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:14,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:14,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:14,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:19:14,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:14,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 23:19:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:14,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:14,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:14,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:14,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:14,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:19:14,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:14,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:14,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:14,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:14,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:14,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:14,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:19:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:14,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:14,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:14,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 23:19:14,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:14,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:19:14,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:14,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:19:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 23:19:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:14,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:14,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:14,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:14,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:19:14,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:19:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:19:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:14,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:19:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:19:14,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248959651] [2020-10-14 23:19:14,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:19:14,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:19:14,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701958639] [2020-10-14 23:19:14,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:19:14,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:14,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:19:14,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:19:14,951 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-10-14 23:19:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:15,230 INFO L93 Difference]: Finished difference Result 84 states and 123 transitions. [2020-10-14 23:19:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:19:15,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-14 23:19:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:15,243 INFO L225 Difference]: With dead ends: 84 [2020-10-14 23:19:15,244 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:19:15,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:19:15,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:19:15,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-14 23:19:15,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 23:19:15,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-10-14 23:19:15,294 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 23 [2020-10-14 23:19:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:15,295 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-10-14 23:19:15,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:19:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-10-14 23:19:15,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:19:15,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:15,297 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] [2020-10-14 23:19:15,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:19:15,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:15,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:15,298 INFO L82 PathProgramCache]: Analyzing trace with hash -150926865, now seen corresponding path program 1 times [2020-10-14 23:19:15,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:15,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168879992] [2020-10-14 23:19:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:19:15,337 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:19:15,337 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:19:15,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:19:15,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:19:15 BoogieIcfgContainer [2020-10-14 23:19:15,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:19:15,364 INFO L168 Benchmark]: Toolchain (without parser) took 2146.14 ms. Allocated memory was 147.3 MB in the beginning and 233.8 MB in the end (delta: 86.5 MB). Free memory was 103.6 MB in the beginning and 180.0 MB in the end (delta: -76.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:15,365 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 23:19:15,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.46 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 103.6 MB in the beginning and 180.3 MB in the end (delta: -76.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:15,367 INFO L168 Benchmark]: Boogie Preprocessor took 47.55 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 MB in the beginning and 178.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:15,368 INFO L168 Benchmark]: RCFGBuilder took 429.71 ms. Allocated memory is still 203.9 MB. Free memory was 178.4 MB in the beginning and 154.7 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:15,369 INFO L168 Benchmark]: TraceAbstraction took 1197.35 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 154.7 MB in the beginning and 180.0 MB in the end (delta: -25.3 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:15,373 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 463.46 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 103.6 MB in the beginning and 180.3 MB in the end (delta: -76.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.55 ms. Allocated memory is still 203.9 MB. Free memory was 180.3 MB in the beginning and 178.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 429.71 ms. Allocated memory is still 203.9 MB. Free memory was 178.4 MB in the beginning and 154.7 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1197.35 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 154.7 MB in the beginning and 180.0 MB in the end (delta: -25.3 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 121]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryFLOAToperation at line 116, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 20. Possible FailurePath: [L24-L28] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L30] static const float zero_log = 0.0; [L116] float x = -0.0f; [L117] CALL, EXPR __ieee754_logf(x) [L33] float hfsq, f, s, z, R, w, t1, t2, dk; [L34] __int32_t k, ix, i, j; [L37] ieee_float_shape_type gf_u; [L38] gf_u.value = (x) [L39] EXPR gf_u.word [L39] (ix) = gf_u.word [L42] k = 0 [L43] COND TRUE ((ix & 0x7fffffff) == 0) [L44] return -two25_log / zero_log; [L117] RET, EXPR __ieee754_logf(x) [L117] float res = __ieee754_logf(x); [L120] CALL, EXPR isinf_float(res) [L14] __int32_t ix; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (ix) = gf_u.word [L20] ix &= 0x7fffffff [L21] return ((ix) == 0x7f800000L); [L120] RET, EXPR isinf_float(res) [L120] COND TRUE !isinf_float(res) [L121] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 44 SDslu, 5 SDs, 0 SdLazy, 57 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1936 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...