/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_0740.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:26:23,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:26:23,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:26:23,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:26:23,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:26:23,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:26:23,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:26:23,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:26:23,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:26:23,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:26:23,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:26:23,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:26:23,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:26:23,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:26:23,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:26:23,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:26:23,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:26:23,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:26:23,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:26:23,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:26:23,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:26:23,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:26:23,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:26:23,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:26:23,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:26:23,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:26:23,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:26:23,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:26:23,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:26:23,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:26:23,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:26:23,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:26:23,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:26:23,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:26:23,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:26:23,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:26:23,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:26:23,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:26:23,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:26:23,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:26:23,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:26:23,844 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 [2020-10-28 14:26:23,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:26:23,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:26:23,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:26:23,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:26:23,874 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:26:23,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:26:23,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:26:23,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:26:23,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:26:23,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:26:23,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:26:23,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:26:23,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:26:23,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:26:23,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:26:23,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:26:23,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:26:23,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:26:23,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:26:23,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:26:23,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:26:23,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:26:23,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:26:23,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:26:23,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:26:23,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:26:23,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:26:23,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:26:23,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:26:23,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:26:24,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:26:24,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:26:24,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:26:24,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:26:24,289 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:26:24,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0740.c [2020-10-28 14:26:24,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23eaa287c/e2c2a926bbf5478f9cce011ae639c332/FLAGbc67b5eaf [2020-10-28 14:26:25,145 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:26:25,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0740.c [2020-10-28 14:26:25,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23eaa287c/e2c2a926bbf5478f9cce011ae639c332/FLAGbc67b5eaf [2020-10-28 14:26:25,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23eaa287c/e2c2a926bbf5478f9cce011ae639c332 [2020-10-28 14:26:25,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:26:25,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:26:25,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:25,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:26:25,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:26:25,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:25" (1/1) ... [2020-10-28 14:26:25,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c206df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:25, skipping insertion in model container [2020-10-28 14:26:25,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:25" (1/1) ... [2020-10-28 14:26:25,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:26:25,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:26:25,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:25,744 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:26:25,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:25,851 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:26:25,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:25 WrapperNode [2020-10-28 14:26:25,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:25,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:26:25,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:26:25,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:26:25,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:25" (1/1) ... [2020-10-28 14:26:25,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:25" (1/1) ... [2020-10-28 14:26:25,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:25" (1/1) ... [2020-10-28 14:26:25,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:25" (1/1) ... [2020-10-28 14:26:25,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:25" (1/1) ... [2020-10-28 14:26:25,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:25" (1/1) ... [2020-10-28 14:26:25,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:25" (1/1) ... [2020-10-28 14:26:25,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:26:25,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:26:25,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:26:25,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:26:25,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:25" (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 [2020-10-28 14:26:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:26:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:26:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:26:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-10-28 14:26:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-28 14:26:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:26:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:26:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:26:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:26:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:26:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:26:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-10-28 14:26:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:26:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:26:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:26:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:26:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:26:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-28 14:26:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:26:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:26:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:26:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:26:26,841 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:26:26,841 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-28 14:26:26,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:26 BoogieIcfgContainer [2020-10-28 14:26:26,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:26:26,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:26:26,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:26:26,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:26:26,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:26:25" (1/3) ... [2020-10-28 14:26:26,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e8e6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:26, skipping insertion in model container [2020-10-28 14:26:26,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:25" (2/3) ... [2020-10-28 14:26:26,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e8e6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:26, skipping insertion in model container [2020-10-28 14:26:26,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:26" (3/3) ... [2020-10-28 14:26:26,860 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0740.c [2020-10-28 14:26:26,875 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:26:26,881 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:26:26,896 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:26:26,942 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:26:26,942 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:26:26,942 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:26:26,942 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:26:26,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:26:26,943 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:26:26,943 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:26:26,943 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:26:26,974 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-28 14:26:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:26:26,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:26,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:26:26,983 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:26,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:26,991 INFO L82 PathProgramCache]: Analyzing trace with hash 219385172, now seen corresponding path program 1 times [2020-10-28 14:26:27,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:27,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909914852] [2020-10-28 14:26:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:27,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:27,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 14:26:27,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 14:26:27,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:27,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:27,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:26:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:26:27,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:27,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:27,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:27,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:27,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:26:27,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:27,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:27,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:27,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:27,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:27,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:26:27,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:26:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:27,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:27,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:27,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:26:27,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:26:27,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:27,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:26:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:27,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:26:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:27,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:27,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:27,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:27,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:27,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:26:27,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:27,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:26:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:27,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:26:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:26:27,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909914852] [2020-10-28 14:26:27,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:27,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:26:27,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659438829] [2020-10-28 14:26:27,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:26:27,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:27,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:26:27,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:26:27,655 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-10-28 14:26:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:27,932 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2020-10-28 14:26:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:26:27,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-28 14:26:27,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:27,946 INFO L225 Difference]: With dead ends: 121 [2020-10-28 14:26:27,946 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 14:26:27,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:26:27,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 14:26:27,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-28 14:26:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 14:26:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2020-10-28 14:26:28,002 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 21 [2020-10-28 14:26:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:28,003 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2020-10-28 14:26:28,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:26:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2020-10-28 14:26:28,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:26:28,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:28,005 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] [2020-10-28 14:26:28,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:26:28,006 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:28,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:28,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1674382266, now seen corresponding path program 1 times [2020-10-28 14:26:28,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:28,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006776851] [2020-10-28 14:26:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:26:28,043 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:26:28,044 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:26:28,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:26:28,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:26:28 BoogieIcfgContainer [2020-10-28 14:26:28,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:26:28,070 INFO L168 Benchmark]: Toolchain (without parser) took 2607.17 ms. Allocated memory is still 158.3 MB. Free memory was 133.9 MB in the beginning and 66.2 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:28,071 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory was 131.3 MB in the beginning and 131.2 MB in the end (delta: 88.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:26:28,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.41 ms. Allocated memory is still 158.3 MB. Free memory was 133.3 MB in the beginning and 121.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:28,073 INFO L168 Benchmark]: Boogie Preprocessor took 56.40 ms. Allocated memory is still 158.3 MB. Free memory was 121.2 MB in the beginning and 119.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:28,074 INFO L168 Benchmark]: RCFGBuilder took 935.43 ms. Allocated memory is still 158.3 MB. Free memory was 119.0 MB in the beginning and 136.5 MB in the end (delta: -17.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:28,074 INFO L168 Benchmark]: TraceAbstraction took 1217.00 ms. Allocated memory is still 158.3 MB. Free memory was 136.0 MB in the beginning and 66.2 MB in the end (delta: 69.7 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:28,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory was 131.3 MB in the beginning and 131.2 MB in the end (delta: 88.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 383.41 ms. Allocated memory is still 158.3 MB. Free memory was 133.3 MB in the beginning and 121.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.40 ms. Allocated memory is still 158.3 MB. Free memory was 121.2 MB in the beginning and 119.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 935.43 ms. Allocated memory is still 158.3 MB. Free memory was 119.0 MB in the beginning and 136.5 MB in the end (delta: -17.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1217.00 ms. Allocated memory is still 158.3 MB. Free memory was 136.0 MB in the beginning and 66.2 MB in the end (delta: 69.7 MB). Peak memory consumption was 70.3 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 someBinaryDOUBLEComparisonOperation at line 132, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L141] double x = -1.0 / 0.0; [L142] CALL, EXPR __ieee754_sqrt(x) [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; [L142] RET, EXPR __ieee754_sqrt(x) [L142] double res = __ieee754_sqrt(x); [L145] CALL, EXPR isnan_double(res) [L132] return x != x; [L145] RET, EXPR isnan_double(res) [L145] COND TRUE !isnan_double(res) [L146] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0740.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 66 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: 80 SDtfs, 10 SDslu, 70 SDs, 0 SdLazy, 76 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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, 0.4s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1360 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...