/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:24:40,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:24:40,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:24:40,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:24:40,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:24:40,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:24:40,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:24:40,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:24:40,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:24:40,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:24:40,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:24:40,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:24:40,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:24:40,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:24:40,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:24:40,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:24:40,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:24:40,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:24:40,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:24:40,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:24:40,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:24:40,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:24:40,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:24:40,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:24:40,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:24:40,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:24:40,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:24:40,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:24:40,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:24:40,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:24:40,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:24:40,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:24:40,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:24:40,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:24:40,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:24:40,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:24:40,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:24:40,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:24:40,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:24:40,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:24:40,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:24:40,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:24:40,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:24:40,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:24:40,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:24:40,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:24:40,220 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:24:40,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:24:40,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:24:40,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:24:40,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:24:40,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:24:40,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:24:40,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:24:40,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:24:40,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:24:40,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:24:40,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:24:40,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:24:40,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:24:40,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:24:40,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:24:40,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:24:40,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:24:40,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:24:40,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:24:40,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:24:40,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:24:40,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:24:40,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:24:40,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:24:40,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:24:40,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:24:40,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:24:40,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:24:40,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:24:40,744 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:24:40,746 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-09-25 05:24:40,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e633a3c36/e4e5d565a4794a1f9c38c71e589bc9e1/FLAGce3a16260 [2020-09-25 05:24:41,379 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:24:41,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-09-25 05:24:41,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e633a3c36/e4e5d565a4794a1f9c38c71e589bc9e1/FLAGce3a16260 [2020-09-25 05:24:41,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e633a3c36/e4e5d565a4794a1f9c38c71e589bc9e1 [2020-09-25 05:24:41,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:24:41,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:24:41,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:24:41,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:24:41,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:24:41,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:24:41" (1/1) ... [2020-09-25 05:24:41,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a03fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:41, skipping insertion in model container [2020-09-25 05:24:41,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:24:41" (1/1) ... [2020-09-25 05:24:41,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:24:41,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:24:42,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:24:42,009 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:24:42,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:24:42,065 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:24:42,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:42 WrapperNode [2020-09-25 05:24:42,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:24:42,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:24:42,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:24:42,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:24:42,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:42" (1/1) ... [2020-09-25 05:24:42,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:42" (1/1) ... [2020-09-25 05:24:42,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:42" (1/1) ... [2020-09-25 05:24:42,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:42" (1/1) ... [2020-09-25 05:24:42,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:42" (1/1) ... [2020-09-25 05:24:42,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:42" (1/1) ... [2020-09-25 05:24:42,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:42" (1/1) ... [2020-09-25 05:24:42,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:24:42,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:24:42,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:24:42,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:24:42,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:24:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:24:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:24:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 05:24:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-09-25 05:24:42,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:24:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:24:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 05:24:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-09-25 05:24:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:24:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 05:24:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:24:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:24:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:24:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 05:24:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:24:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:24:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:24:42,649 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:24:42,649 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 05:24:42,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:24:42 BoogieIcfgContainer [2020-09-25 05:24:42,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:24:42,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:24:42,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:24:42,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:24:42,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:24:41" (1/3) ... [2020-09-25 05:24:42,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e7828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:24:42, skipping insertion in model container [2020-09-25 05:24:42,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:42" (2/3) ... [2020-09-25 05:24:42,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e7828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:24:42, skipping insertion in model container [2020-09-25 05:24:42,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:24:42" (3/3) ... [2020-09-25 05:24:42,666 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-09-25 05:24:42,682 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:24:42,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:24:42,739 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:24:42,770 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:24:42,770 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:24:42,770 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:24:42,770 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:24:42,770 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:24:42,770 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:24:42,771 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:24:42,771 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:24:42,794 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-25 05:24:42,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 05:24:42,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:24:42,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:24:42,803 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:24:42,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:24:42,811 INFO L82 PathProgramCache]: Analyzing trace with hash 69005663, now seen corresponding path program 1 times [2020-09-25 05:24:42,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:24:42,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995754357] [2020-09-25 05:24:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:24:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:43,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:43,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:24:43,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:24:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 05:24:43,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:43,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 05:24:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:43,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:24:43,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:24:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:43,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:43,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:43,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:24:43,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:24:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:24:43,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:43,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:43,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:43,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:24:43,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:43,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 05:24:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:43,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:43,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:43,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:24:43,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:24:43,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:24:43,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:43,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:43,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:43,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:24:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:43,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:43,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:24:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:43,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:43,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:24:43,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:24:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:24:43,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:43,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:24:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:43,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:24:43,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995754357] [2020-09-25 05:24:43,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:24:43,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:24:43,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155390146] [2020-09-25 05:24:43,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:24:43,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:24:43,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:24:43,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:24:43,296 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-09-25 05:24:43,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:24:43,562 INFO L93 Difference]: Finished difference Result 162 states and 186 transitions. [2020-09-25 05:24:43,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:24:43,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 05:24:43,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:24:43,580 INFO L225 Difference]: With dead ends: 162 [2020-09-25 05:24:43,581 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 05:24:43,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:24:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 05:24:43,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-25 05:24:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 05:24:43,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-09-25 05:24:43,644 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 32 [2020-09-25 05:24:43,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:24:43,645 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-09-25 05:24:43,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:24:43,646 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-09-25 05:24:43,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 05:24:43,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:24:43,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:24:43,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:24:43,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:24:43,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:24:43,650 INFO L82 PathProgramCache]: Analyzing trace with hash -480977931, now seen corresponding path program 1 times [2020-09-25 05:24:43,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:24:43,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354850056] [2020-09-25 05:24:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:24:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:24:43,702 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:24:43,703 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:24:43,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:24:43,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:24:43 BoogieIcfgContainer [2020-09-25 05:24:43,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:24:43,736 INFO L168 Benchmark]: Toolchain (without parser) took 2046.81 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 102.6 MB in the beginning and 89.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:43,737 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:24:43,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.52 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 90.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:43,739 INFO L168 Benchmark]: Boogie Preprocessor took 132.42 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 90.7 MB in the beginning and 177.0 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:43,739 INFO L168 Benchmark]: RCFGBuilder took 456.39 ms. Allocated memory is still 199.8 MB. Free memory was 177.0 MB in the beginning and 152.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:43,740 INFO L168 Benchmark]: TraceAbstraction took 1074.49 ms. Allocated memory is still 199.8 MB. Free memory was 152.7 MB in the beginning and 89.6 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:43,744 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 373.52 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 90.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.42 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 90.7 MB in the beginning and 177.0 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.39 ms. Allocated memory is still 199.8 MB. Free memory was 177.0 MB in the beginning and 152.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1074.49 ms. Allocated memory is still 199.8 MB. Free memory was 152.7 MB in the beginning and 89.6 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 43, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L74] double x = 0.0 / 0.0; [L75] CALL, EXPR round_double(x) [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L27] COND FALSE !(exponent_less_1023 < 20) [L41] COND TRUE exponent_less_1023 > 51 [L42] COND TRUE exponent_less_1023 == 1024 [L43] return x + x; [L75] RET, EXPR round_double(x) [L75] double res = round_double(x); [L78] CALL, EXPR isnan_double(res) [L15] return x != x; [L78] RET, EXPR isnan_double(res) [L78] COND TRUE !isnan_double(res) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 17 SDslu, 67 SDs, 0 SdLazy, 98 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred 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, 0.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1612 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...