/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 0.1.25-177f698 [2020-08-22 03:48:05,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:48:05,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:48:05,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:48:05,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:48:05,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:48:05,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:48:05,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:48:05,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:48:05,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:48:05,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:48:05,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:48:05,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:48:05,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:48:05,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:48:05,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:48:05,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:48:05,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:48:05,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:48:05,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:48:05,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:48:05,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:48:05,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:48:05,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:48:05,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:48:05,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:48:05,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:48:05,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:48:05,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:48:05,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:48:05,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:48:05,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:48:05,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:48:05,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:48:05,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:48:05,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:48:05,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:48:05,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:48:05,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:48:05,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:48:05,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:48:05,114 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 [2020-08-22 03:48:05,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:48:05,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:48:05,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:48:05,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:48:05,162 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:48:05,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:48:05,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:48:05,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:48:05,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:48:05,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:48:05,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:48:05,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:48:05,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:48:05,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:48:05,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:48:05,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:48:05,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:48:05,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:48:05,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:48:05,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:48:05,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:48:05,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:48:05,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:48:05,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:48:05,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:48:05,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:48:05,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:48:05,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:48:05,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:48:05,169 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 -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:48:05,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:48:05,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:48:05,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:48:05,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:48:05,511 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:48:05,512 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-22 03:48:05,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e28cace6/a58c339280a8426d8c3df25f2c0dba3a/FLAG56d56ad57 [2020-08-22 03:48:06,096 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:48:06,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-22 03:48:06,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e28cace6/a58c339280a8426d8c3df25f2c0dba3a/FLAG56d56ad57 [2020-08-22 03:48:06,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e28cace6/a58c339280a8426d8c3df25f2c0dba3a [2020-08-22 03:48:06,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:48:06,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:48:06,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:48:06,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:48:06,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:48:06,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:48:06" (1/1) ... [2020-08-22 03:48:06,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc17a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:06, skipping insertion in model container [2020-08-22 03:48:06,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:48:06" (1/1) ... [2020-08-22 03:48:06,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:48:06,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:48:06,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:48:06,867 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:48:06,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:48:06,943 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:48:06,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:06 WrapperNode [2020-08-22 03:48:06,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:48:06,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:48:06,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:48:06,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:48:06,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:06" (1/1) ... [2020-08-22 03:48:06,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:06" (1/1) ... [2020-08-22 03:48:06,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:06" (1/1) ... [2020-08-22 03:48:06,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:06" (1/1) ... [2020-08-22 03:48:06,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:06" (1/1) ... [2020-08-22 03:48:07,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:06" (1/1) ... [2020-08-22 03:48:07,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:06" (1/1) ... [2020-08-22 03:48:07,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:48:07,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:48:07,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:48:07,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:48:07,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:06" (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 [2020-08-22 03:48:07,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:48:07,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:48:07,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 03:48:07,072 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 03:48:07,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 03:48:07,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:48:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:48:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 03:48:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 03:48:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 03:48:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:48:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 03:48:07,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:48:07,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:48:07,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 03:48:07,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:48:07,076 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 03:48:07,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:48:07,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:48:07,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 03:48:07,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:48:07,732 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:48:07,732 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 03:48:07,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:48:07 BoogieIcfgContainer [2020-08-22 03:48:07,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:48:07,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:48:07,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:48:07,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:48:07,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:48:06" (1/3) ... [2020-08-22 03:48:07,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c324d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:48:07, skipping insertion in model container [2020-08-22 03:48:07,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:06" (2/3) ... [2020-08-22 03:48:07,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c324d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:48:07, skipping insertion in model container [2020-08-22 03:48:07,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:48:07" (3/3) ... [2020-08-22 03:48:07,756 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-22 03:48:07,767 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:48:07,777 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:48:07,792 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:48:07,825 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:48:07,825 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:48:07,826 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:48:07,826 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:48:07,826 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:48:07,826 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:48:07,827 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:48:07,827 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:48:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-22 03:48:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 03:48:07,863 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:48:07,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:48:07,864 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:48:07,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:48:07,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-22 03:48:07,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:48:07,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043920679] [2020-08-22 03:48:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:48:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:08,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:48:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:08,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:48:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:48:08,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043920679] [2020-08-22 03:48:08,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:48:08,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:48:08,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644603378] [2020-08-22 03:48:08,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:48:08,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:48:08,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:48:08,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:48:08,149 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-22 03:48:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:48:08,498 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-22 03:48:08,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:48:08,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 03:48:08,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:48:08,511 INFO L225 Difference]: With dead ends: 142 [2020-08-22 03:48:08,512 INFO L226 Difference]: Without dead ends: 69 [2020-08-22 03:48:08,517 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 [2020-08-22 03:48:08,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-22 03:48:08,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-22 03:48:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 03:48:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-22 03:48:08,566 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-22 03:48:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:48:08,566 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-22 03:48:08,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:48:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-22 03:48:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 03:48:08,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:48:08,568 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] [2020-08-22 03:48:08,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:48:08,569 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:48:08,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:48:08,569 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-22 03:48:08,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:48:08,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269463041] [2020-08-22 03:48:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:48:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:48:08,642 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:48:08,642 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:48:08,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:48:08,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:48:08 BoogieIcfgContainer [2020-08-22 03:48:08,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:48:08,669 INFO L168 Benchmark]: Toolchain (without parser) took 2170.68 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 102.1 MB in the beginning and 194.0 MB in the end (delta: -91.9 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:08,670 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:48:08,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.73 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.7 MB in the beginning and 177.0 MB in the end (delta: -75.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:08,675 INFO L168 Benchmark]: Boogie Preprocessor took 63.52 ms. Allocated memory is still 202.4 MB. Free memory was 177.0 MB in the beginning and 174.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:08,676 INFO L168 Benchmark]: RCFGBuilder took 734.96 ms. Allocated memory is still 202.4 MB. Free memory was 174.4 MB in the beginning and 138.0 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:08,677 INFO L168 Benchmark]: TraceAbstraction took 919.80 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 137.4 MB in the beginning and 194.0 MB in the end (delta: -56.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:48:08,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 445.73 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.7 MB in the beginning and 177.0 MB in the end (delta: -75.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.52 ms. Allocated memory is still 202.4 MB. Free memory was 177.0 MB in the beginning and 174.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 734.96 ms. Allocated memory is still 202.4 MB. Free memory was 174.4 MB in the beginning and 138.0 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 919.80 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 137.4 MB in the beginning and 194.0 MB in the end (delta: -56.6 MB). There was no memory consumed. 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 39, 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 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=74occurred 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, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...