/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=NARROWEST --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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:59:39,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:59:39,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:59:39,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:59:39,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:59:39,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:59:39,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:59:39,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:59:39,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:59:39,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:59:39,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:59:39,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:59:39,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:59:39,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:59:39,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:59:39,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:59:39,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:59:39,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:59:39,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:59:39,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:59:39,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:59:39,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:59:39,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:59:39,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:59:39,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:59:39,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:59:39,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:59:39,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:59:39,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:59:39,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:59:39,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:59:39,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:59:39,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:59:39,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:59:39,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:59:39,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:59:39,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:59:39,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:59:39,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:59:39,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:59:39,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:59:39,854 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 01:59:39,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:59:39,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:59:39,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:59:39,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:59:39,906 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:59:39,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:59:39,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:59:39,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:59:39,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:59:39,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:59:39,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:59:39,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:59:39,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:59:39,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:59:39,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:59:39,910 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:59:39,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:59:39,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:59:39,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:59:39,911 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:59:39,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:59:39,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:59:39,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:59:39,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:59:39,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:59:39,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:59:39,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:59:39,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:59:39,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:59:39,913 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 01:59:40,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:59:40,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:59:40,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:59:40,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:59:40,445 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:59:40,446 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 01:59:40,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5286e35ee/6fe2072e9fb647deb3fd23ef4cf3f92e/FLAGcac5e7b39 [2020-09-25 01:59:41,112 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:59:41,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 01:59:41,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5286e35ee/6fe2072e9fb647deb3fd23ef4cf3f92e/FLAGcac5e7b39 [2020-09-25 01:59:41,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5286e35ee/6fe2072e9fb647deb3fd23ef4cf3f92e [2020-09-25 01:59:41,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:59:41,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:59:41,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:41,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:59:41,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:59:41,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:41" (1/1) ... [2020-09-25 01:59:41,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c43987d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:41, skipping insertion in model container [2020-09-25 01:59:41,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:41" (1/1) ... [2020-09-25 01:59:41,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:59:41,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:59:41,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:41,917 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:59:42,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:42,096 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:59:42,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:42 WrapperNode [2020-09-25 01:59:42,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:42,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:59:42,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:59:42,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:59:42,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:42" (1/1) ... [2020-09-25 01:59:42,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:42" (1/1) ... [2020-09-25 01:59:42,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:42" (1/1) ... [2020-09-25 01:59:42,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:42" (1/1) ... [2020-09-25 01:59:42,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:42" (1/1) ... [2020-09-25 01:59:42,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:42" (1/1) ... [2020-09-25 01:59:42,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:42" (1/1) ... [2020-09-25 01:59:42,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:59:42,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:59:42,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:59:42,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:59:42,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:42" (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 01:59:42,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:59:42,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:59:42,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 01:59:42,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-25 01:59:42,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 01:59:42,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:59:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:59:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 01:59:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 01:59:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-25 01:59:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:59:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 01:59:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:59:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:59:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 01:59:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:59:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 01:59:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:59:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:59:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-25 01:59:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:59:42,956 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:59:42,957 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-25 01:59:42,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:42 BoogieIcfgContainer [2020-09-25 01:59:42,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:59:42,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:59:42,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:59:42,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:59:42,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:59:41" (1/3) ... [2020-09-25 01:59:42,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450c1cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:42, skipping insertion in model container [2020-09-25 01:59:42,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:42" (2/3) ... [2020-09-25 01:59:42,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450c1cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:42, skipping insertion in model container [2020-09-25 01:59:42,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:42" (3/3) ... [2020-09-25 01:59:42,975 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-09-25 01:59:42,988 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:59:43,000 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:59:43,023 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:59:43,059 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:59:43,059 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:59:43,059 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:59:43,059 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:59:43,060 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:59:43,060 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:59:43,060 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:59:43,060 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:59:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-09-25 01:59:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 01:59:43,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:43,105 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 01:59:43,105 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:43,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:43,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1608489446, now seen corresponding path program 1 times [2020-09-25 01:59:43,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:43,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536931974] [2020-09-25 01:59:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:43,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:43,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:43,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:43,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 01:59:43,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:43,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 01:59:43,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 01:59:43,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:43,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:59:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:43,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:43,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 01:59:43,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:43,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 01:59:43,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:43,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:43,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:43,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:43,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 01:59:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:43,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:43,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 01:59:43,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:43,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:59:43,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 01:59:43,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:43,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:43,739 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 01:59:43,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536931974] [2020-09-25 01:59:43,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:43,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:59:43,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233716408] [2020-09-25 01:59:43,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:59:43,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:43,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:59:43,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:59:43,794 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 4 states. [2020-09-25 01:59:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:44,406 INFO L93 Difference]: Finished difference Result 415 states and 505 transitions. [2020-09-25 01:59:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:59:44,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 01:59:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:44,426 INFO L225 Difference]: With dead ends: 415 [2020-09-25 01:59:44,426 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 01:59:44,433 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 [2020-09-25 01:59:44,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 01:59:44,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-09-25 01:59:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-25 01:59:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2020-09-25 01:59:44,509 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 46 [2020-09-25 01:59:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:44,509 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2020-09-25 01:59:44,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:59:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2020-09-25 01:59:44,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 01:59:44,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:44,514 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, 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 01:59:44,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:59:44,515 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:44,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:44,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1262573606, now seen corresponding path program 1 times [2020-09-25 01:59:44,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:44,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119112117] [2020-09-25 01:59:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:59:44,596 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:59:44,596 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:59:44,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:59:44,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:59:44 BoogieIcfgContainer [2020-09-25 01:59:44,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:59:44,648 INFO L168 Benchmark]: Toolchain (without parser) took 3195.62 ms. Allocated memory was 144.2 MB in the beginning and 233.3 MB in the end (delta: 89.1 MB). Free memory was 100.5 MB in the beginning and 131.0 MB in the end (delta: -30.5 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:44,652 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 01:59:44,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.19 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 99.9 MB in the beginning and 176.2 MB in the end (delta: -76.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:44,654 INFO L168 Benchmark]: Boogie Preprocessor took 68.71 ms. Allocated memory is still 201.3 MB. Free memory was 176.2 MB in the beginning and 173.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:44,655 INFO L168 Benchmark]: RCFGBuilder took 798.55 ms. Allocated memory is still 201.3 MB. Free memory was 173.5 MB in the beginning and 125.6 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:44,657 INFO L168 Benchmark]: TraceAbstraction took 1677.41 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 125.6 MB in the beginning and 131.0 MB in the end (delta: -5.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:44,669 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 641.19 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 99.9 MB in the beginning and 176.2 MB in the end (delta: -76.3 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.71 ms. Allocated memory is still 201.3 MB. Free memory was 176.2 MB in the beginning and 173.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 798.55 ms. Allocated memory is still 201.3 MB. Free memory was 173.5 MB in the beginning and 125.6 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1677.41 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 125.6 MB in the beginning and 131.0 MB in the end (delta: -5.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 245 SDtfs, 45 SDslu, 184 SDs, 0 SdLazy, 266 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=221occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 3510 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...