/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:07:26,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:07:26,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:07:26,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:07:26,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:07:26,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:07:26,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:07:26,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:07:26,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:07:26,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:07:26,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:07:26,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:07:26,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:07:26,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:07:26,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:07:26,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:07:26,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:07:26,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:07:26,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:07:26,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:07:26,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:07:26,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:07:26,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:07:26,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:07:26,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:07:26,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:07:26,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:07:26,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:07:26,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:07:26,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:07:26,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:07:26,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:07:26,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:07:26,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:07:26,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:07:26,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:07:26,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:07:26,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:07:26,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:07:26,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:07:26,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:07:26,475 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 [2020-10-29 09:07:26,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:07:26,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:07:26,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:07:26,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:07:26,506 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:07:26,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:07:26,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:07:26,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:07:26,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:07:26,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:07:26,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:07:26,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:07:26,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:07:26,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:07:26,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:07:26,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:07:26,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:07:26,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:07:26,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:07:26,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:07:26,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:07:26,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:07:26,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:07:26,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:07:26,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:07:26,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:07:26,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:07:26,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:07:26,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:07:26,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:07:27,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:07:27,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:07:27,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:07:27,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:07:27,094 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:07:27,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-10-29 09:07:27,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe25e1c77/aa8e19ee856743fc877054ca1bc922b1/FLAG74a5a1669 [2020-10-29 09:07:27,825 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:07:27,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-10-29 09:07:27,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe25e1c77/aa8e19ee856743fc877054ca1bc922b1/FLAG74a5a1669 [2020-10-29 09:07:27,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe25e1c77/aa8e19ee856743fc877054ca1bc922b1 [2020-10-29 09:07:27,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:07:27,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:07:27,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:27,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:07:27,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:07:27,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:27" (1/1) ... [2020-10-29 09:07:27,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5910915d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:27, skipping insertion in model container [2020-10-29 09:07:27,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:27" (1/1) ... [2020-10-29 09:07:27,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:07:27,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:07:28,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:28,220 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:07:28,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:28,351 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:07:28,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:28 WrapperNode [2020-10-29 09:07:28,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:28,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:07:28,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:07:28,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:07:28,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:28" (1/1) ... [2020-10-29 09:07:28,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:28" (1/1) ... [2020-10-29 09:07:28,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:28" (1/1) ... [2020-10-29 09:07:28,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:28" (1/1) ... [2020-10-29 09:07:28,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:28" (1/1) ... [2020-10-29 09:07:28,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:28" (1/1) ... [2020-10-29 09:07:28,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:28" (1/1) ... [2020-10-29 09:07:28,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:07:28,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:07:28,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:07:28,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:07:28,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:28" (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 [2020-10-29 09:07:28,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:07:28,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:07:28,532 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:07:28,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-29 09:07:28,534 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-10-29 09:07:28,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-29 09:07:28,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:07:28,535 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:07:28,535 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:07:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:07:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:07:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-29 09:07:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-29 09:07:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-10-29 09:07:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:07:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:07:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:07:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:07:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:07:28,539 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-29 09:07:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:07:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:07:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:07:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:07:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:07:29,470 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:07:29,471 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-29 09:07:29,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:29 BoogieIcfgContainer [2020-10-29 09:07:29,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:07:29,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:07:29,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:07:29,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:07:29,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:07:27" (1/3) ... [2020-10-29 09:07:29,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d515a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:29, skipping insertion in model container [2020-10-29 09:07:29,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:28" (2/3) ... [2020-10-29 09:07:29,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d515a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:29, skipping insertion in model container [2020-10-29 09:07:29,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:29" (3/3) ... [2020-10-29 09:07:29,483 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-10-29 09:07:29,497 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:07:29,503 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:07:29,518 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:07:29,549 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:07:29,549 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:07:29,550 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:07:29,550 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:07:29,550 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:07:29,550 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:07:29,551 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:07:29,551 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:07:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-10-29 09:07:29,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 09:07:29,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:29,581 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] [2020-10-29 09:07:29,581 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:29,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1874786986, now seen corresponding path program 1 times [2020-10-29 09:07:29,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:29,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37565686] [2020-10-29 09:07:29,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:30,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:30,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 09:07:30,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:07:30,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 09:07:30,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:30,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 09:07:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 09:07:30,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:30,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:30,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:30,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:30,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:07:30,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:30,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:30,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:07:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:30,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:30,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:30,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:07:30,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:07:30,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 09:07:30,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:30,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 09:07:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:30,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:30,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37565686] [2020-10-29 09:07:30,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:30,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:07:30,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574636507] [2020-10-29 09:07:30,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:07:30,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:30,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:07:30,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:07:30,357 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 4 states. [2020-10-29 09:07:30,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:30,752 INFO L93 Difference]: Finished difference Result 147 states and 238 transitions. [2020-10-29 09:07:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:07:30,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 09:07:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:30,765 INFO L225 Difference]: With dead ends: 147 [2020-10-29 09:07:30,766 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 09:07:30,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:07:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 09:07:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-29 09:07:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 09:07:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 97 transitions. [2020-10-29 09:07:30,822 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 97 transitions. Word has length 20 [2020-10-29 09:07:30,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:30,822 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 97 transitions. [2020-10-29 09:07:30,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:07:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 97 transitions. [2020-10-29 09:07:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:07:30,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:30,824 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] [2020-10-29 09:07:30,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:07:30,825 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:30,826 INFO L82 PathProgramCache]: Analyzing trace with hash -83505235, now seen corresponding path program 1 times [2020-10-29 09:07:30,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:30,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471176241] [2020-10-29 09:07:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:07:30,876 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:07:30,876 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:07:30,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:07:30,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:07:30 BoogieIcfgContainer [2020-10-29 09:07:30,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:07:30,914 INFO L168 Benchmark]: Toolchain (without parser) took 3052.93 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 100.5 MB in the beginning and 80.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 52.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:30,920 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:07:30,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.74 ms. Allocated memory is still 125.8 MB. Free memory was 99.8 MB in the beginning and 86.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:30,922 INFO L168 Benchmark]: Boogie Preprocessor took 71.01 ms. Allocated memory is still 125.8 MB. Free memory was 86.5 MB in the beginning and 84.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:30,922 INFO L168 Benchmark]: RCFGBuilder took 1048.30 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 83.9 MB in the beginning and 114.7 MB in the end (delta: -30.9 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:30,924 INFO L168 Benchmark]: TraceAbstraction took 1433.51 ms. Allocated memory is still 156.2 MB. Free memory was 114.2 MB in the beginning and 80.0 MB in the end (delta: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:30,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 487.74 ms. Allocated memory is still 125.8 MB. Free memory was 99.8 MB in the beginning and 86.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.01 ms. Allocated memory is still 125.8 MB. Free memory was 86.5 MB in the beginning and 84.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1048.30 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 83.9 MB in the beginning and 114.7 MB in the end (delta: -30.9 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1433.51 ms. Allocated memory is still 156.2 MB. Free memory was 114.2 MB in the beginning and 80.0 MB in the end (delta: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L189] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L189] RET, EXPR fmod_double(x, y) [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 16 SDslu, 84 SDs, 0 SdLazy, 103 SolverSat, 8 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred 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, 0.5s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1330 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...