/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=BIGGEST --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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:17:33,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:17:33,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:17:33,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:17:33,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:17:33,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:17:33,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:17:33,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:17:33,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:17:33,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:17:33,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:17:33,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:17:33,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:17:33,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:17:33,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:17:33,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:17:33,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:17:33,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:17:33,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:17:33,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:17:33,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:17:33,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:17:33,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:17:33,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:17:33,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:17:33,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:17:33,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:17:33,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:17:33,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:17:33,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:17:33,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:17:33,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:17:33,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:17:33,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:17:33,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:17:33,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:17:33,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:17:33,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:17:33,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:17:33,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:17:33,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:17:33,133 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 [2020-08-21 17:17:33,167 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:17:33,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:17:33,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:17:33,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:17:33,169 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:17:33,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:17:33,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:17:33,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:17:33,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:17:33,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:17:33,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:17:33,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:17:33,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:17:33,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:17:33,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:17:33,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:17:33,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:17:33,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:17:33,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:17:33,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:17:33,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:17:33,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:17:33,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:17:33,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:17:33,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:17:33,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:17:33,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:17:33,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:17:33,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:17:33,173 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=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:17:33,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:17:33,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:17:33,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:17:33,496 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:17:33,497 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:17:33,497 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-21 17:17:33,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e28e2a9/34db4c8f23b04b97bdcfaade40613f40/FLAGbe3e3daf0 [2020-08-21 17:17:34,055 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:17:34,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-21 17:17:34,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e28e2a9/34db4c8f23b04b97bdcfaade40613f40/FLAGbe3e3daf0 [2020-08-21 17:17:34,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68e28e2a9/34db4c8f23b04b97bdcfaade40613f40 [2020-08-21 17:17:34,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:17:34,419 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:17:34,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:34,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:17:34,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:17:34,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:34" (1/1) ... [2020-08-21 17:17:34,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:34, skipping insertion in model container [2020-08-21 17:17:34,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:17:34" (1/1) ... [2020-08-21 17:17:34,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:17:34,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:17:34,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:34,766 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:17:34,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:17:34,842 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:17:34,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:34 WrapperNode [2020-08-21 17:17:34,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:17:34,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:17:34,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:17:34,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:17:34,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:34" (1/1) ... [2020-08-21 17:17:34,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:34" (1/1) ... [2020-08-21 17:17:34,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:34" (1/1) ... [2020-08-21 17:17:34,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:34" (1/1) ... [2020-08-21 17:17:34,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:34" (1/1) ... [2020-08-21 17:17:34,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:34" (1/1) ... [2020-08-21 17:17:34,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:34" (1/1) ... [2020-08-21 17:17:34,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:17:34,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:17:34,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:17:34,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:17:34,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:34" (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 [2020-08-21 17:17:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:17:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:17:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 17:17:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 17:17:34,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-21 17:17:34,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:17:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:17:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 17:17:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 17:17:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 17:17:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:17:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 17:17:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:17:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:17:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 17:17:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:17:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-21 17:17:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:17:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:17:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 17:17:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:17:35,614 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:17:35,614 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 17:17:35,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:35 BoogieIcfgContainer [2020-08-21 17:17:35,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:17:35,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:17:35,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:17:35,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:17:35,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:17:34" (1/3) ... [2020-08-21 17:17:35,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9c2602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:35, skipping insertion in model container [2020-08-21 17:17:35,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:17:34" (2/3) ... [2020-08-21 17:17:35,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9c2602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:17:35, skipping insertion in model container [2020-08-21 17:17:35,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:17:35" (3/3) ... [2020-08-21 17:17:35,632 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-21 17:17:35,643 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:17:35,651 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:17:35,665 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:17:35,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:17:35,689 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:17:35,689 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:17:35,689 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:17:35,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:17:35,689 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:17:35,690 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:17:35,690 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:17:35,709 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-21 17:17:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 17:17:35,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:35,718 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] [2020-08-21 17:17:35,718 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:35,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:35,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-21 17:17:35,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:35,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949374621] [2020-08-21 17:17:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:35,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:17:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:35,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:17:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:35,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 17:17:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:17:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:17:35,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949374621] [2020-08-21 17:17:35,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:17:35,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:17:35,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896779700] [2020-08-21 17:17:35,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:17:35,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:17:35,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:17:35,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:17:35,989 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-21 17:17:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:17:36,307 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-21 17:17:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:17:36,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 17:17:36,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:17:36,323 INFO L225 Difference]: With dead ends: 138 [2020-08-21 17:17:36,323 INFO L226 Difference]: Without dead ends: 68 [2020-08-21 17:17:36,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:17:36,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-21 17:17:36,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-21 17:17:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-21 17:17:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-21 17:17:36,377 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-21 17:17:36,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:17:36,378 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-21 17:17:36,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:17:36,378 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-21 17:17:36,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 17:17:36,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:17:36,380 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] [2020-08-21 17:17:36,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:17:36,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:17:36,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:17:36,381 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-21 17:17:36,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:17:36,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818342274] [2020-08-21 17:17:36,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:17:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:17:36,573 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:17:36,573 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:17:36,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:17:36,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:17:36 BoogieIcfgContainer [2020-08-21 17:17:36,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:17:36,634 INFO L168 Benchmark]: Toolchain (without parser) took 2213.18 ms. Allocated memory was 142.1 MB in the beginning and 233.8 MB in the end (delta: 91.8 MB). Free memory was 104.3 MB in the beginning and 185.6 MB in the end (delta: -81.3 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:36,635 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:17:36,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.85 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 104.1 MB in the beginning and 179.9 MB in the end (delta: -75.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:36,640 INFO L168 Benchmark]: Boogie Preprocessor took 62.86 ms. Allocated memory is still 205.0 MB. Free memory was 179.9 MB in the beginning and 176.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:36,642 INFO L168 Benchmark]: RCFGBuilder took 713.39 ms. Allocated memory is still 205.0 MB. Free memory was 176.8 MB in the beginning and 140.5 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:17:36,644 INFO L168 Benchmark]: TraceAbstraction took 1009.47 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 140.5 MB in the beginning and 185.6 MB in the end (delta: -45.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 17:17:36,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 421.85 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 104.1 MB in the beginning and 179.9 MB in the end (delta: -75.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.86 ms. Allocated memory is still 205.0 MB. Free memory was 179.9 MB in the beginning and 176.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 713.39 ms. Allocated memory is still 205.0 MB. Free memory was 176.8 MB in the beginning and 140.5 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1009.47 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 140.5 MB in the beginning and 185.6 MB in the end (delta: -45.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: 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 someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] 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); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 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: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...