/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=BIGGEST --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/double_req_bl_0270b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:30:20,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:30:20,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:30:20,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:30:20,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:30:20,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:30:20,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:30:20,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:30:20,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:30:20,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:30:20,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:30:20,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:30:20,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:30:20,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:30:20,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:30:20,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:30:20,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:30:20,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:30:20,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:30:20,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:30:20,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:30:20,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:30:20,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:30:20,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:30:20,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:30:20,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:30:20,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:30:20,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:30:20,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:30:20,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:30:20,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:30:20,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:30:20,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:30:20,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:30:20,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:30:20,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:30:20,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:30:20,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:30:20,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:30:20,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:30:20,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:30:20,834 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 [2020-10-12 15:30:20,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:30:20,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:30:20,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:30:20,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:30:20,880 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:30:20,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:30:20,880 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:30:20,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:30:20,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:30:20,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:30:20,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:30:20,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:30:20,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:30:20,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:30:20,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:30:20,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:30:20,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:30:20,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:30:20,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:30:20,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:30:20,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:30:20,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:30:20,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:30:20,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:30:20,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:30:20,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:30:20,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:30:20,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:30:20,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:30:20,886 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:30:21,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:30:21,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:30:21,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:30:21,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:30:21,235 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:30:21,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0270b.c [2020-10-12 15:30:21,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cb9c35a6/5caf98daedbb4e9485f66343c0504a89/FLAG79f398ef9 [2020-10-12 15:30:21,782 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:30:21,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0270b.c [2020-10-12 15:30:21,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cb9c35a6/5caf98daedbb4e9485f66343c0504a89/FLAG79f398ef9 [2020-10-12 15:30:22,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cb9c35a6/5caf98daedbb4e9485f66343c0504a89 [2020-10-12 15:30:22,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:30:22,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:30:22,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:22,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:30:22,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:30:22,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:22" (1/1) ... [2020-10-12 15:30:22,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bccad30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:22, skipping insertion in model container [2020-10-12 15:30:22,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:22" (1/1) ... [2020-10-12 15:30:22,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:30:22,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:30:22,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:22,479 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:30:22,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:22,676 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:30:22,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:22 WrapperNode [2020-10-12 15:30:22,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:22,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:30:22,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:30:22,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:30:22,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:22" (1/1) ... [2020-10-12 15:30:22,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:22" (1/1) ... [2020-10-12 15:30:22,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:22" (1/1) ... [2020-10-12 15:30:22,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:22" (1/1) ... [2020-10-12 15:30:22,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:22" (1/1) ... [2020-10-12 15:30:22,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:22" (1/1) ... [2020-10-12 15:30:22,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:22" (1/1) ... [2020-10-12 15:30:22,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:30:22,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:30:22,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:30:22,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:30:22,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:22" (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 [2020-10-12 15:30:22,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:30:22,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:30:22,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-10-12 15:30:22,810 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-12 15:30:22,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asin [2020-10-12 15:30:22,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:30:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:30:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-10-12 15:30:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:30:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:30:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:30:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:30:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:30:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:30:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-12 15:30:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asin [2020-10-12 15:30:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:30:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:30:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:30:23,460 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:30:23,461 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-12 15:30:23,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:30:23 BoogieIcfgContainer [2020-10-12 15:30:23,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:30:23,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:30:23,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:30:23,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:30:23,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:30:22" (1/3) ... [2020-10-12 15:30:23,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe117f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:30:23, skipping insertion in model container [2020-10-12 15:30:23,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:22" (2/3) ... [2020-10-12 15:30:23,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe117f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:30:23, skipping insertion in model container [2020-10-12 15:30:23,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:30:23" (3/3) ... [2020-10-12 15:30:23,481 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0270b.c [2020-10-12 15:30:23,492 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:30:23,499 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:30:23,512 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:30:23,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:30:23,534 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:30:23,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:30:23,535 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:30:23,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:30:23,535 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:30:23,535 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:30:23,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:30:23,555 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-10-12 15:30:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 15:30:23,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:30:23,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:30:23,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:30:23,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:30:23,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1665511405, now seen corresponding path program 1 times [2020-10-12 15:30:23,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:30:23,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725625327] [2020-10-12 15:30:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:30:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:23,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:23,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:23,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:23,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:30:23,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:30:23,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 15:30:23,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:30:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:23,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:30:23,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:30:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:23,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:24,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:30:24,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:30:24,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 15:30:24,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:24,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:30:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:24,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 15:30:24,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:30:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:24,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:24,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:30:24,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:30:24,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:30:24,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 15:30:24,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:30:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:30:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:30:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:30:24,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:30:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:30:24,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725625327] [2020-10-12 15:30:24,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:30:24,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:30:24,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851100951] [2020-10-12 15:30:24,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:30:24,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:30:24,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:30:24,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:30:24,191 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 4 states. [2020-10-12 15:30:24,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:30:24,660 INFO L93 Difference]: Finished difference Result 166 states and 258 transitions. [2020-10-12 15:30:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:30:24,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-12 15:30:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:30:24,675 INFO L225 Difference]: With dead ends: 166 [2020-10-12 15:30:24,675 INFO L226 Difference]: Without dead ends: 83 [2020-10-12 15:30:24,679 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 [2020-10-12 15:30:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-12 15:30:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-12 15:30:24,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 15:30:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2020-10-12 15:30:24,737 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 18 [2020-10-12 15:30:24,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:30:24,738 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2020-10-12 15:30:24,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:30:24,738 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2020-10-12 15:30:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:30:24,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:30:24,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:30:24,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:30:24,740 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:30:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:30:24,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1458196420, now seen corresponding path program 1 times [2020-10-12 15:30:24,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:30:24,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107790542] [2020-10-12 15:30:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:30:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:30:24,777 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:30:24,777 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:30:24,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:30:24,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:30:24 BoogieIcfgContainer [2020-10-12 15:30:24,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:30:24,803 INFO L168 Benchmark]: Toolchain (without parser) took 2640.74 ms. Allocated memory was 148.4 MB in the beginning and 233.8 MB in the end (delta: 85.5 MB). Free memory was 103.9 MB in the beginning and 128.3 MB in the end (delta: -24.3 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:24,804 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:30:24,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.34 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 103.7 MB in the beginning and 180.0 MB in the end (delta: -76.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:24,806 INFO L168 Benchmark]: Boogie Preprocessor took 69.84 ms. Allocated memory is still 205.5 MB. Free memory was 180.0 MB in the beginning and 177.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:24,807 INFO L168 Benchmark]: RCFGBuilder took 719.75 ms. Allocated memory is still 205.5 MB. Free memory was 177.4 MB in the beginning and 137.6 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:24,808 INFO L168 Benchmark]: TraceAbstraction took 1331.51 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 136.9 MB in the beginning and 128.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:30:24,812 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 514.34 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 103.7 MB in the beginning and 180.0 MB in the end (delta: -76.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.84 ms. Allocated memory is still 205.5 MB. Free memory was 180.0 MB in the beginning and 177.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 719.75 ms. Allocated memory is still 205.5 MB. Free memory was 177.4 MB in the beginning and 137.6 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1331.51 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 136.9 MB in the beginning and 128.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 240]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 235, overapproximation of bitwiseAnd at line 166, overapproximation of someBinaryArithmeticDOUBLEoperation at line 183, overapproximation of someBinaryDOUBLEComparisonOperation at line 239. Possible FailurePath: [L16] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L142-L156] static const double one_asin = 1.00000000000000000000e+00, huge_asin = 1.000e+300, pio2_hi_asin = 1.57079632679489655800e+00, pio2_lo_asin = 6.12323399573676603587e-17, pio4_hi_asin = 7.85398163397448278999e-01, pS0_asin = 1.66666666666666657415e-01, pS1_asin = -3.25565818622400915405e-01, pS2_asin = 2.01212532134862925881e-01, pS3_asin = -4.00555345006794114027e-02, pS4_asin = 7.91534994289814532176e-04, pS5_asin = 3.47933107596021167570e-05, qS1_asin = -2.40339491173441421878e+00, qS2_asin = 2.02094576023350569471e+00, qS3_asin = -6.88283971605453293030e-01, qS4_asin = 7.70381505559019352791e-02; [L235] double x = -0.0; [L236] CALL, EXPR __ieee754_asin(x) [L159] double t, w, p, q, c, r, s; [L160] __int32_t hx, ix; [L162] ieee_double_shape_type gh_u; [L163] gh_u.value = (x) [L164] EXPR gh_u.parts.msw [L164] (hx) = gh_u.parts.msw [L166] ix = hx & 0x7fffffff [L167] COND FALSE !(ix >= 0x3ff00000) [L178] COND TRUE ix < 0x3fe00000 [L179] COND FALSE !(ix < 0x3e400000) [L183] t = x * x [L184-L187] p = t * (pS0_asin + t * (pS1_asin + t * (pS2_asin + t * (pS3_asin + t * (pS4_asin + t * pS5_asin))))) [L188-L189] q = one_asin + t * (qS1_asin + t * (qS2_asin + t * (qS3_asin + t * qS4_asin))) [L190] w = p / q [L191] return x + x * w; [L236] RET, EXPR __ieee754_asin(x) [L236] double res = __ieee754_asin(x); [L239] COND TRUE res != x [L240] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 97 SDslu, 5 SDs, 0 SdLazy, 115 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=87occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1513 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...