/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=DEEPEST --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_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:43:04,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:43:04,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:43:05,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:43:05,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:43:05,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:43:05,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:43:05,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:43:05,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:43:05,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:43:05,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:43:05,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:43:05,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:43:05,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:43:05,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:43:05,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:43:05,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:43:05,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:43:05,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:43:05,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:43:05,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:43:05,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:43:05,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:43:05,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:43:05,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:43:05,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:43:05,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:43:05,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:43:05,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:43:05,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:43:05,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:43:05,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:43:05,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:43:05,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:43:05,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:43:05,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:43:05,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:43:05,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:43:05,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:43:05,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:43:05,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:43:05,073 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 [2020-10-27 19:43:05,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:43:05,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:43:05,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:43:05,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:43:05,112 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:43:05,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:43:05,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:43:05,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:43:05,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:43:05,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:43:05,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:43:05,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:43:05,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:43:05,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:43:05,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:43:05,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:43:05,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:43:05,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:43:05,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:43:05,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:43:05,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:43:05,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:43:05,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:43:05,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:43:05,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:43:05,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:43:05,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:43:05,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:43:05,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:43:05,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:43:05,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:43:05,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:43:05,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:43:05,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:43:05,523 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:43:05,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-10-27 19:43:05,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45145a333/620800e54ed74c9e8043f8da798251eb/FLAGddf0051eb [2020-10-27 19:43:06,293 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:43:06,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-10-27 19:43:06,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45145a333/620800e54ed74c9e8043f8da798251eb/FLAGddf0051eb [2020-10-27 19:43:06,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45145a333/620800e54ed74c9e8043f8da798251eb [2020-10-27 19:43:06,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:43:06,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:43:06,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:43:06,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:43:06,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:43:06,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:06" (1/1) ... [2020-10-27 19:43:06,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f78def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:06, skipping insertion in model container [2020-10-27 19:43:06,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:06" (1/1) ... [2020-10-27 19:43:06,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:43:06,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:43:06,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:43:06,936 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:43:06,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:43:06,985 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:43:06,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:06 WrapperNode [2020-10-27 19:43:06,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:43:06,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:43:06,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:43:06,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:43:07,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:06" (1/1) ... [2020-10-27 19:43:07,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:06" (1/1) ... [2020-10-27 19:43:07,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:06" (1/1) ... [2020-10-27 19:43:07,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:06" (1/1) ... [2020-10-27 19:43:07,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:06" (1/1) ... [2020-10-27 19:43:07,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:06" (1/1) ... [2020-10-27 19:43:07,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:06" (1/1) ... [2020-10-27 19:43:07,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:43:07,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:43:07,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:43:07,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:43:07,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:06" (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 [2020-10-27 19:43:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:43:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:43:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:43:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-27 19:43:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-10-27 19:43:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:43:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:43:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:43:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:43:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:43:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-27 19:43:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-10-27 19:43:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:43:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:43:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:43:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:43:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:43:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:43:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:43:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:43:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:43:07,632 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:43:07,633 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 19:43:07,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:07 BoogieIcfgContainer [2020-10-27 19:43:07,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:43:07,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:43:07,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:43:07,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:43:07,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:43:06" (1/3) ... [2020-10-27 19:43:07,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c51d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:07, skipping insertion in model container [2020-10-27 19:43:07,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:06" (2/3) ... [2020-10-27 19:43:07,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c51d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:07, skipping insertion in model container [2020-10-27 19:43:07,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:07" (3/3) ... [2020-10-27 19:43:07,645 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-10-27 19:43:07,659 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:43:07,664 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:43:07,680 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:43:07,710 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:43:07,710 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:43:07,710 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:43:07,711 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:43:07,711 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:43:07,711 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:43:07,711 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:43:07,711 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:43:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-27 19:43:07,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 19:43:07,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:43:07,739 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] [2020-10-27 19:43:07,740 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:43:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:43:07,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1518435197, now seen corresponding path program 1 times [2020-10-27 19:43:07,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:43:07,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228940553] [2020-10-27 19:43:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:43:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:07,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:08,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:08,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 19:43:08,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 19:43:08,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 19:43:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:08,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 19:43:08,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:43:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:08,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:08,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:43:08,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:08,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 19:43:08,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:08,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:08,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:43:08,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:08,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:43:08,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:43:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:08,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:08,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:43:08,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:08,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 19:43:08,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:43:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:43:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 19:43:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:08,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:08,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:08,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:43:08,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:08,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:43:08,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:43:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:43:08,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228940553] [2020-10-27 19:43:08,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:43:08,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:43:08,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910880712] [2020-10-27 19:43:08,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:43:08,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:43:08,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:43:08,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:43:08,466 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-10-27 19:43:08,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:43:08,759 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2020-10-27 19:43:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:43:08,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 19:43:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:43:08,774 INFO L225 Difference]: With dead ends: 75 [2020-10-27 19:43:08,774 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 19:43:08,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:43:08,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 19:43:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-27 19:43:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 19:43:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-27 19:43:08,830 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24 [2020-10-27 19:43:08,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:43:08,831 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-27 19:43:08,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:43:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-27 19:43:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 19:43:08,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:43:08,833 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] [2020-10-27 19:43:08,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:43:08,833 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:43:08,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:43:08,834 INFO L82 PathProgramCache]: Analyzing trace with hash -313897119, now seen corresponding path program 1 times [2020-10-27 19:43:08,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:43:08,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384939889] [2020-10-27 19:43:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:43:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:43:08,879 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:43:08,880 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:43:08,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:43:08,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:43:08 BoogieIcfgContainer [2020-10-27 19:43:08,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:43:08,936 INFO L168 Benchmark]: Toolchain (without parser) took 2302.18 ms. Allocated memory is still 151.0 MB. Free memory was 127.8 MB in the beginning and 115.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:08,937 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 125.8 MB. Free memory is still 100.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:43:08,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.04 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 116.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:08,941 INFO L168 Benchmark]: Boogie Preprocessor took 60.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:08,942 INFO L168 Benchmark]: RCFGBuilder took 586.55 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 129.1 MB in the end (delta: -14.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:08,944 INFO L168 Benchmark]: TraceAbstraction took 1291.86 ms. Allocated memory is still 151.0 MB. Free memory was 128.6 MB in the beginning and 115.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:08,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 125.8 MB. Free memory is still 100.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 352.04 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 116.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 586.55 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 129.1 MB in the end (delta: -14.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1291.86 ms. Allocated memory is still 151.0 MB. Free memory was 128.6 MB in the beginning and 115.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.0 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 shiftRight at line 36, overapproximation of someBinaryArithmeticDOUBLEoperation at line 76, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 17. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L77] CALL, EXPR round_double(x) [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND TRUE exponent_less_1023 < 20 [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; [L77] RET, EXPR round_double(x) [L77] double res = round_double(x); [L80] CALL, EXPR isnan_double(res) [L17] return x != x; [L80] RET, EXPR isnan_double(res) [L80] COND TRUE !isnan_double(res) [L81] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1031.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 10 SDslu, 35 SDs, 0 SdLazy, 41 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 0.5s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1495 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...