/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_0620b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:47:44,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:47:44,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:47:44,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:47:44,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:47:44,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:47:44,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:47:44,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:47:44,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:47:44,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:47:44,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:47:44,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:47:44,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:47:44,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:47:44,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:47:44,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:47:44,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:47:44,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:47:44,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:47:44,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:47:44,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:47:44,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:47:44,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:47:44,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:47:44,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:47:44,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:47:44,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:47:44,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:47:44,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:47:44,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:47:44,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:47:44,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:47:44,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:47:44,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:47:44,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:47:44,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:47:44,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:47:44,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:47:44,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:47:44,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:47:44,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:47:44,861 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 04:47:44,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:47:44,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:47:44,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:47:44,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:47:44,899 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:47:44,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:47:44,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:47:44,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:47:44,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:47:44,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:47:44,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:47:44,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:47:44,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:47:44,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:47:44,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:47:44,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:47:44,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:47:44,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:47:44,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:47:44,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:47:44,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:47:44,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:47:44,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:47:44,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:47:44,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:47:44,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:47:44,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:47:44,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:47:44,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:47:44,905 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:47:45,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:47:45,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:47:45,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:47:45,243 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:47:45,244 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:47:45,244 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-14 04:47:45,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c92d01f1d/e5a26d310a4d469ab559786a52f89118/FLAGd7a146a57 [2020-10-14 04:47:45,787 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:47:45,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0620b.c [2020-10-14 04:47:45,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c92d01f1d/e5a26d310a4d469ab559786a52f89118/FLAGd7a146a57 [2020-10-14 04:47:46,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c92d01f1d/e5a26d310a4d469ab559786a52f89118 [2020-10-14 04:47:46,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:47:46,128 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:47:46,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:46,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:47:46,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:47:46,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:46" (1/1) ... [2020-10-14 04:47:46,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3e4b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:46, skipping insertion in model container [2020-10-14 04:47:46,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:46" (1/1) ... [2020-10-14 04:47:46,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:47:46,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:47:46,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:46,497 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:47:46,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:46,684 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:47:46,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:46 WrapperNode [2020-10-14 04:47:46,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:46,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:47:46,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:47:46,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:47:46,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:46" (1/1) ... [2020-10-14 04:47:46,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:46" (1/1) ... [2020-10-14 04:47:46,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:46" (1/1) ... [2020-10-14 04:47:46,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:46" (1/1) ... [2020-10-14 04:47:46,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:46" (1/1) ... [2020-10-14 04:47:46,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:46" (1/1) ... [2020-10-14 04:47:46,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:46" (1/1) ... [2020-10-14 04:47:46,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:47:46,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:47:46,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:47:46,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:47:46,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:46" (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 04:47:46,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:47:46,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:47:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-14 04:47:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-14 04:47:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-14 04:47:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:47:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:47:46,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 04:47:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-14 04:47:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:47:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:47:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:47:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:47:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:47:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:47:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-14 04:47:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-14 04:47:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:47:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:47:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:47:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:47:47,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:47:47,233 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-14 04:47:47,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:47 BoogieIcfgContainer [2020-10-14 04:47:47,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:47:47,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:47:47,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:47:47,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:47:47,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:47:46" (1/3) ... [2020-10-14 04:47:47,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66faab94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:47, skipping insertion in model container [2020-10-14 04:47:47,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:46" (2/3) ... [2020-10-14 04:47:47,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66faab94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:47, skipping insertion in model container [2020-10-14 04:47:47,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:47" (3/3) ... [2020-10-14 04:47:47,247 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-10-14 04:47:47,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:47:47,266 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:47:47,281 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:47:47,304 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:47:47,305 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:47:47,305 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:47:47,305 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:47:47,305 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:47:47,306 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:47:47,306 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:47:47,306 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:47:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-14 04:47:47,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 04:47:47,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:47,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:47:47,333 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:47,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:47,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1825925930, now seen corresponding path program 1 times [2020-10-14 04:47:47,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:47,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562457229] [2020-10-14 04:47:47,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:47,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:47,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:47:47,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:47,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 04:47:47,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:47,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 04:47:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:47,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:47:47,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:47,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:47,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:47,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:47,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:47,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:47:47,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:47,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:47,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:47,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:47,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:47,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:47:47,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:47,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:47:47,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:47,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:47:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:47,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:47,945 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 04:47:47,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562457229] [2020-10-14 04:47:47,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:47,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:47:47,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505953671] [2020-10-14 04:47:47,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:47:47,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:47,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:47:47,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:47:47,974 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-14 04:47:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:47:48,338 INFO L93 Difference]: Finished difference Result 100 states and 142 transitions. [2020-10-14 04:47:48,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:47:48,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-14 04:47:48,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:47:48,354 INFO L225 Difference]: With dead ends: 100 [2020-10-14 04:47:48,355 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 04:47:48,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 04:47:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 04:47:48,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-14 04:47:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 04:47:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2020-10-14 04:47:48,411 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 18 [2020-10-14 04:47:48,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:47:48,411 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2020-10-14 04:47:48,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:47:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-10-14 04:47:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 04:47:48,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:48,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:47:48,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:47:48,414 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:48,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:48,414 INFO L82 PathProgramCache]: Analyzing trace with hash -939815554, now seen corresponding path program 1 times [2020-10-14 04:47:48,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:48,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931836562] [2020-10-14 04:47:48,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:47:48,463 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:47:48,463 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:47:48,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:47:48,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:47:48 BoogieIcfgContainer [2020-10-14 04:47:48,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:47:48,491 INFO L168 Benchmark]: Toolchain (without parser) took 2362.32 ms. Allocated memory was 146.3 MB in the beginning and 235.4 MB in the end (delta: 89.1 MB). Free memory was 102.7 MB in the beginning and 183.8 MB in the end (delta: -81.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:48,492 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 04:47:48,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.90 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.3 MB in the beginning and 178.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:48,494 INFO L168 Benchmark]: Boogie Preprocessor took 56.18 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 175.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:48,495 INFO L168 Benchmark]: RCFGBuilder took 496.12 ms. Allocated memory is still 202.4 MB. Free memory was 175.6 MB in the beginning and 149.5 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:48,496 INFO L168 Benchmark]: TraceAbstraction took 1248.45 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 148.6 MB in the beginning and 183.8 MB in the end (delta: -35.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 04:47:48,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 555.90 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.3 MB in the beginning and 178.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.18 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 175.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 496.12 ms. Allocated memory is still 202.4 MB. Free memory was 175.6 MB in the beginning and 149.5 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1248.45 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 148.6 MB in the beginning and 183.8 MB in the end (delta: -35.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 142]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 141, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 62, overapproximation of someUnaryFLOAToperation at line 137, overapproximation of someBinaryArithmeticFLOAToperation at line 65. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L137] float x = -0.0f; [L138] CALL, EXPR atan_float(x) [L54] float w, s1, s2, z; [L55] __int32_t ix, hx, id; [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (hx) = gf_u.word [L62] ix = hx & 0x7fffffff [L63] COND TRUE ix >= 0x50800000 [L64] COND TRUE ((ix) > 0x7f800000L) [L65] return x + x; [L138] RET, EXPR atan_float(x) [L138] float res = atan_float(x); [L141] EXPR res == -0.0f && __signbit_float(res) == 1 [L141] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L142] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 8 SDslu, 55 SDs, 0 SdLazy, 61 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 0.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1309 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...