/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_0910b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:26:35,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:26:35,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:26:35,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:26:35,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:26:35,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:26:35,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:26:35,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:26:35,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:26:35,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:26:35,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:26:35,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:26:35,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:26:35,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:26:35,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:26:35,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:26:35,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:26:35,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:26:35,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:26:35,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:26:35,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:26:35,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:26:35,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:26:35,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:26:35,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:26:35,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:26:35,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:26:35,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:26:35,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:26:35,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:26:35,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:26:35,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:26:35,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:26:35,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:26:35,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:26:35,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:26:35,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:26:35,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:26:35,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:26:35,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:26:35,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:26:35,855 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 14:26:35,909 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:26:35,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:26:35,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:26:35,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:26:35,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:26:35,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:26:35,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:26:35,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:26:35,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:26:35,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:26:35,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:26:35,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:26:35,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:26:35,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:26:35,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:26:35,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:26:35,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:26:35,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:26:35,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:26:35,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:26:35,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:26:35,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:26:35,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:26:35,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:26:35,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:26:35,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:26:35,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:26:35,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:26:35,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:26:35,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:26:36,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:26:36,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:26:36,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:26:36,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:26:36,341 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:26:36,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0910b.c [2020-10-28 14:26:36,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6619d57a/c0c4ff27644b4fc9806ec3922e710cca/FLAGf85c5155e [2020-10-28 14:26:37,058 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:26:37,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0910b.c [2020-10-28 14:26:37,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6619d57a/c0c4ff27644b4fc9806ec3922e710cca/FLAGf85c5155e [2020-10-28 14:26:37,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6619d57a/c0c4ff27644b4fc9806ec3922e710cca [2020-10-28 14:26:37,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:26:37,381 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:26:37,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:37,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:26:37,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:26:37,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:37" (1/1) ... [2020-10-28 14:26:37,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13298b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:37, skipping insertion in model container [2020-10-28 14:26:37,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:37" (1/1) ... [2020-10-28 14:26:37,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:26:37,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:26:37,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:37,652 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:26:37,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:37,718 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:26:37,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:37 WrapperNode [2020-10-28 14:26:37,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:37,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:26:37,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:26:37,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:26:37,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:37" (1/1) ... [2020-10-28 14:26:37,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:37" (1/1) ... [2020-10-28 14:26:37,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:37" (1/1) ... [2020-10-28 14:26:37,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:37" (1/1) ... [2020-10-28 14:26:37,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:37" (1/1) ... [2020-10-28 14:26:37,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:37" (1/1) ... [2020-10-28 14:26:37,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:37" (1/1) ... [2020-10-28 14:26:37,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:26:37,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:26:37,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:26:37,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:26:37,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:37" (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 14:26:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:26:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:26:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:26:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-28 14:26:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log [2020-10-28 14:26:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:26:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:26:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:26:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:26:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:26:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:26:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-28 14:26:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:26:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:26:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:26:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log [2020-10-28 14:26:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:26:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:26:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:26:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:26:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:26:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:26:38,588 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:26:38,588 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-28 14:26:38,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:38 BoogieIcfgContainer [2020-10-28 14:26:38,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:26:38,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:26:38,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:26:38,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:26:38,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:26:37" (1/3) ... [2020-10-28 14:26:38,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a8f585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:38, skipping insertion in model container [2020-10-28 14:26:38,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:37" (2/3) ... [2020-10-28 14:26:38,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a8f585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:38, skipping insertion in model container [2020-10-28 14:26:38,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:38" (3/3) ... [2020-10-28 14:26:38,600 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910b.c [2020-10-28 14:26:38,613 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:26:38,619 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:26:38,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:26:38,665 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:26:38,665 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:26:38,665 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:26:38,666 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:26:38,666 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:26:38,666 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:26:38,666 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:26:38,666 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:26:38,687 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-28 14:26:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:26:38,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:38,695 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] [2020-10-28 14:26:38,696 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:38,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:38,703 INFO L82 PathProgramCache]: Analyzing trace with hash 382792620, now seen corresponding path program 1 times [2020-10-28 14:26:38,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:38,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892586808] [2020-10-28 14:26:38,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:38,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:38,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:39,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:39,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 14:26:39,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:26:39,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-28 14:26:39,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:39,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 14:26:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:39,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:26:39,537 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:26:39,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:39,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:39,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:39,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:39,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:26:39,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:39,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:39,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:39,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:39,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:26:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:39,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:39,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:26:39,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:26:39,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:26:39,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:39,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:26:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:39,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:39,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:26:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:39,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:39,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:26:39,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:39,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:26:39,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:39,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:26:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:39,668 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 14:26:39,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892586808] [2020-10-28 14:26:39,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:39,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:26:39,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530151586] [2020-10-28 14:26:39,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:26:39,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:39,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:26:39,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:26:39,706 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-10-28 14:26:39,956 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 14:26:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:40,208 INFO L93 Difference]: Finished difference Result 87 states and 127 transitions. [2020-10-28 14:26:40,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:26:40,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-28 14:26:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:40,220 INFO L225 Difference]: With dead ends: 87 [2020-10-28 14:26:40,220 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 14:26:40,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:26:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 14:26:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-28 14:26:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 14:26:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-10-28 14:26:40,273 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 25 [2020-10-28 14:26:40,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:40,274 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-10-28 14:26:40,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:26:40,274 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-10-28 14:26:40,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:26:40,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:40,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:26:40,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:26:40,276 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:40,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:40,278 INFO L82 PathProgramCache]: Analyzing trace with hash -495685516, now seen corresponding path program 1 times [2020-10-28 14:26:40,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:40,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508599198] [2020-10-28 14:26:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:26:40,350 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:26:40,350 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:26:40,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:26:40,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:26:40 BoogieIcfgContainer [2020-10-28 14:26:40,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:26:40,377 INFO L168 Benchmark]: Toolchain (without parser) took 3000.13 ms. Allocated memory is still 151.0 MB. Free memory was 133.6 MB in the beginning and 73.7 MB in the end (delta: 60.0 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:40,378 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 121.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:26:40,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.23 ms. Allocated memory is still 151.0 MB. Free memory was 133.0 MB in the beginning and 121.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:40,379 INFO L168 Benchmark]: Boogie Preprocessor took 64.21 ms. Allocated memory is still 151.0 MB. Free memory was 121.0 MB in the beginning and 133.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:40,380 INFO L168 Benchmark]: RCFGBuilder took 804.46 ms. Allocated memory is still 151.0 MB. Free memory was 133.4 MB in the beginning and 108.1 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:40,381 INFO L168 Benchmark]: TraceAbstraction took 1782.36 ms. Allocated memory is still 151.0 MB. Free memory was 107.7 MB in the beginning and 73.7 MB in the end (delta: 34.0 MB). Peak memory consumption was 33.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:40,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 121.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 334.23 ms. Allocated memory is still 151.0 MB. Free memory was 133.0 MB in the beginning and 121.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.21 ms. Allocated memory is still 151.0 MB. Free memory was 121.0 MB in the beginning and 133.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 804.46 ms. Allocated memory is still 151.0 MB. Free memory was 133.4 MB in the beginning and 108.1 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1782.36 ms. Allocated memory is still 151.0 MB. Free memory was 107.7 MB in the beginning and 73.7 MB in the end (delta: 34.0 MB). Peak memory consumption was 33.9 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 29, overapproximation of someUnaryDOUBLEoperation at line 134, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; [L134] double x = -0.0; [L135] CALL, EXPR __ieee754_log(x) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 [L60] COND TRUE hx < 0x00100000 [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; [L135] RET, EXPR __ieee754_log(x) [L135] double res = __ieee754_log(x); [L138] CALL, EXPR isinf_double(res) [L21] __int32_t hx, lx; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (hx) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lx) = ew_u.parts.lsw [L28] hx &= 0x7fffffff [L29] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L30] hx = 0x7ff00000 - hx [L31] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L138] RET, EXPR isinf_double(res) [L138] COND TRUE !isinf_double(res) [L139] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0910b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 8 SDslu, 45 SDs, 0 SdLazy, 52 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 0.7s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 2664 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...