/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_0730b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:20:23,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:20:23,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:20:24,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:20:24,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:20:24,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:20:24,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:20:24,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:20:24,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:20:24,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:20:24,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:20:24,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:20:24,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:20:24,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:20:24,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:20:24,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:20:24,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:20:24,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:20:24,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:20:24,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:20:24,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:20:24,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:20:24,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:20:24,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:20:24,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:20:24,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:20:24,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:20:24,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:20:24,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:20:24,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:20:24,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:20:24,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:20:24,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:20:24,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:20:24,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:20:24,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:20:24,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:20:24,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:20:24,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:20:24,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:20:24,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:20:24,091 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 [2020-09-21 12:20:24,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:20:24,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:20:24,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:20:24,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:20:24,150 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:20:24,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:20:24,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:20:24,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:20:24,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:20:24,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:20:24,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:20:24,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:20:24,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:20:24,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:20:24,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:20:24,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:20:24,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:20:24,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:20:24,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:20:24,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:20:24,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:20:24,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:20:24,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:20:24,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:20:24,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:20:24,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:20:24,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:20:24,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:20:24,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:20:24,157 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:20:24,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:20:24,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:20:24,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:20:24,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:20:24,666 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:20:24,667 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-09-21 12:20:24,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a28cdd5f/0c8ef6585a5b4a7d8e4a271e8ea18f5f/FLAGe0c0559e6 [2020-09-21 12:20:25,245 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:20:25,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-09-21 12:20:25,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a28cdd5f/0c8ef6585a5b4a7d8e4a271e8ea18f5f/FLAGe0c0559e6 [2020-09-21 12:20:25,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a28cdd5f/0c8ef6585a5b4a7d8e4a271e8ea18f5f [2020-09-21 12:20:25,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:20:25,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:20:25,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:25,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:20:25,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:20:25,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:25" (1/1) ... [2020-09-21 12:20:25,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629af9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:25, skipping insertion in model container [2020-09-21 12:20:25,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:25" (1/1) ... [2020-09-21 12:20:25,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:20:25,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:20:25,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:25,933 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:20:26,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:26,098 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:20:26,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:26 WrapperNode [2020-09-21 12:20:26,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:26,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:20:26,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:20:26,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:20:26,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:26" (1/1) ... [2020-09-21 12:20:26,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:26" (1/1) ... [2020-09-21 12:20:26,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:26" (1/1) ... [2020-09-21 12:20:26,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:26" (1/1) ... [2020-09-21 12:20:26,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:26" (1/1) ... [2020-09-21 12:20:26,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:26" (1/1) ... [2020-09-21 12:20:26,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:26" (1/1) ... [2020-09-21 12:20:26,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:20:26,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:20:26,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:20:26,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:20:26,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:26" (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 [2020-09-21 12:20:26,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:20:26,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:20:26,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-09-21 12:20:26,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-21 12:20:26,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:20:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:20:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 12:20:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-09-21 12:20:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:20:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:20:26,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:20:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:20:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:20:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:20:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-21 12:20:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:20:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:20:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:20:26,853 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:20:26,853 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-21 12:20:26,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:26 BoogieIcfgContainer [2020-09-21 12:20:26,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:20:26,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:20:26,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:20:26,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:20:26,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:20:25" (1/3) ... [2020-09-21 12:20:26,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e3dbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:26, skipping insertion in model container [2020-09-21 12:20:26,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:26" (2/3) ... [2020-09-21 12:20:26,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e3dbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:26, skipping insertion in model container [2020-09-21 12:20:26,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:26" (3/3) ... [2020-09-21 12:20:26,875 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-09-21 12:20:26,884 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:20:26,894 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:20:26,916 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:20:26,944 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:20:26,944 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:20:26,944 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:20:26,945 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:20:26,945 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:20:26,945 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:20:26,945 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:20:26,945 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:20:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-09-21 12:20:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 12:20:26,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:26,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:20:26,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:26,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:26,983 INFO L82 PathProgramCache]: Analyzing trace with hash 85253742, now seen corresponding path program 1 times [2020-09-21 12:20:26,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:26,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419725030] [2020-09-21 12:20:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:27,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:27,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:20:27,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:27,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 12:20:27,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:20:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:20:27,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:27,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:27,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:27,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:27,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:27,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:20:27,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:20:27,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:27,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:27,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:20:27,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:20:27,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:20:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:20:27,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419725030] [2020-09-21 12:20:27,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:27,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:20:27,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841664644] [2020-09-21 12:20:27,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:20:27,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:27,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:20:27,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:20:27,421 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-09-21 12:20:27,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:27,838 INFO L93 Difference]: Finished difference Result 124 states and 187 transitions. [2020-09-21 12:20:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:20:27,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-09-21 12:20:27,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:27,853 INFO L225 Difference]: With dead ends: 124 [2020-09-21 12:20:27,854 INFO L226 Difference]: Without dead ends: 62 [2020-09-21 12:20:27,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:20:27,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-21 12:20:27,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-21 12:20:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-21 12:20:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2020-09-21 12:20:27,916 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 16 [2020-09-21 12:20:27,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:27,917 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2020-09-21 12:20:27,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:20:27,917 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2020-09-21 12:20:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 12:20:27,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:27,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:20:27,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:20:27,919 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:27,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1037787104, now seen corresponding path program 1 times [2020-09-21 12:20:27,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:27,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716240967] [2020-09-21 12:20:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:20:27,974 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:20:27,974 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:20:27,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:20:28,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:20:28 BoogieIcfgContainer [2020-09-21 12:20:28,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:20:28,006 INFO L168 Benchmark]: Toolchain (without parser) took 2415.54 ms. Allocated memory was 141.6 MB in the beginning and 234.9 MB in the end (delta: 93.3 MB). Free memory was 105.4 MB in the beginning and 194.7 MB in the end (delta: -89.3 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:28,008 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:20:28,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 504.39 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 104.8 MB in the beginning and 182.2 MB in the end (delta: -77.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:28,010 INFO L168 Benchmark]: Boogie Preprocessor took 93.13 ms. Allocated memory is still 205.0 MB. Free memory was 182.2 MB in the beginning and 180.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:28,011 INFO L168 Benchmark]: RCFGBuilder took 668.18 ms. Allocated memory is still 205.0 MB. Free memory was 179.6 MB in the beginning and 150.0 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:28,012 INFO L168 Benchmark]: TraceAbstraction took 1140.17 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 149.4 MB in the beginning and 194.7 MB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:20:28,015 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 504.39 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 104.8 MB in the beginning and 182.2 MB in the end (delta: -77.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.13 ms. Allocated memory is still 205.0 MB. Free memory was 182.2 MB in the beginning and 180.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 668.18 ms. Allocated memory is still 205.0 MB. Free memory was 179.6 MB in the beginning and 150.0 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1140.17 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 149.4 MB in the beginning and 194.7 MB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 154]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 149, overapproximation of someBinaryArithmeticDOUBLEoperation at line 33, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 153. Possible FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L149] double x = -0.0; [L150] CALL, EXPR __ieee754_sqrt(x) [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L33] return x * x + x; [L150] RET, EXPR __ieee754_sqrt(x) [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == -0.0 && __signbit_double(res) == 1 [L153] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L154] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 75 SDslu, 5 SDs, 0 SdLazy, 85 SolverSat, 11 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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, 0.2s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 630 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...