/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:18:00,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:18:00,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:18:00,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:18:00,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:18:00,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:18:00,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:18:00,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:18:00,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:18:00,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:18:00,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:18:00,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:18:00,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:18:00,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:18:00,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:18:00,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:18:00,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:18:00,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:18:00,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:18:00,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:18:00,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:18:00,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:18:00,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:18:00,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:18:00,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:18:00,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:18:00,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:18:00,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:18:00,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:18:00,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:18:00,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:18:00,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:18:00,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:18:00,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:18:00,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:18:00,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:18:00,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:18:00,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:18:00,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:18:00,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:18:00,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:18:00,928 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 [2020-10-14 23:18:00,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:18:00,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:18:00,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:18:00,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:18:00,952 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:18:00,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:18:00,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:18:00,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:18:00,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:18:00,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:18:00,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:18:00,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:18:00,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:18:00,953 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:18:00,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:18:00,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:18:00,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:18:00,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:18:00,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:18:00,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:18:00,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:18:00,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:18:00,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:18:00,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:18:00,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:18:00,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:18:00,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:18:00,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:18:00,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:18:00,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:18:01,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:18:01,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:18:01,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:18:01,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:18:01,286 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:18:01,287 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-10-14 23:18:01,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6f2e8d05/da00d7de14b845cab41cb4429510eaec/FLAGb1cc93c1d [2020-10-14 23:18:01,882 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:18:01,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-10-14 23:18:01,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6f2e8d05/da00d7de14b845cab41cb4429510eaec/FLAGb1cc93c1d [2020-10-14 23:18:02,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6f2e8d05/da00d7de14b845cab41cb4429510eaec [2020-10-14 23:18:02,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:18:02,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:18:02,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:02,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:18:02,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:18:02,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:02" (1/1) ... [2020-10-14 23:18:02,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce2121d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02, skipping insertion in model container [2020-10-14 23:18:02,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:02" (1/1) ... [2020-10-14 23:18:02,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:18:02,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:18:02,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:02,472 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:18:02,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:18:02,605 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:18:02,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02 WrapperNode [2020-10-14 23:18:02,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:18:02,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:18:02,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:18:02,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:18:02,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02" (1/1) ... [2020-10-14 23:18:02,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02" (1/1) ... [2020-10-14 23:18:02,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02" (1/1) ... [2020-10-14 23:18:02,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02" (1/1) ... [2020-10-14 23:18:02,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02" (1/1) ... [2020-10-14 23:18:02,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02" (1/1) ... [2020-10-14 23:18:02,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02" (1/1) ... [2020-10-14 23:18:02,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:18:02,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:18:02,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:18:02,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:18:02,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02" (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 [2020-10-14 23:18:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:18:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:18:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-14 23:18:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-10-14 23:18:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:18:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:18:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-14 23:18:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-10-14 23:18:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:18:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:18:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:18:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:18:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:18:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:18:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:18:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:18:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:18:03,080 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:18:03,081 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 23:18:03,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:03 BoogieIcfgContainer [2020-10-14 23:18:03,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:18:03,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:18:03,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:18:03,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:18:03,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:02" (1/3) ... [2020-10-14 23:18:03,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc87442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:03, skipping insertion in model container [2020-10-14 23:18:03,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:02" (2/3) ... [2020-10-14 23:18:03,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc87442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:03, skipping insertion in model container [2020-10-14 23:18:03,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:03" (3/3) ... [2020-10-14 23:18:03,095 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-10-14 23:18:03,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:18:03,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:18:03,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:18:03,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:18:03,173 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:18:03,173 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:18:03,173 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:18:03,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:18:03,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:18:03,174 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:18:03,174 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:18:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-14 23:18:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:18:03,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:03,201 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] [2020-10-14 23:18:03,201 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:03,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:03,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-10-14 23:18:03,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:03,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483774701] [2020-10-14 23:18:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:03,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:03,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:18:03,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:03,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 23:18:03,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:03,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:18:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:03,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:18:03,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:18:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:03,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:03,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:03,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:18:03,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:03,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:18:03,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:18:03,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:18:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:03,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:03,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:18:03,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:18:03,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:03,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:18:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:18:03,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 23:18:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:18:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:18:03,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:18:03,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:18:03,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:18:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:18:03,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:18:03,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:18:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:18:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:18:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:18:03,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:18:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:18:03,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483774701] [2020-10-14 23:18:03,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:18:03,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:18:03,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291396155] [2020-10-14 23:18:03,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:18:03,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:18:03,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:18:03,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:18:03,672 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-10-14 23:18:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:18:03,897 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-10-14 23:18:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:18:03,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-14 23:18:03,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:18:03,911 INFO L225 Difference]: With dead ends: 86 [2020-10-14 23:18:03,912 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 23:18:03,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:18:03,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 23:18:03,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-14 23:18:03,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 23:18:03,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-10-14 23:18:03,966 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-10-14 23:18:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:18:03,967 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-10-14 23:18:03,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:18:03,967 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-10-14 23:18:03,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:18:03,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:18:03,969 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] [2020-10-14 23:18:03,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:18:03,970 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:18:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:18:03,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-10-14 23:18:03,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:18:03,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465492464] [2020-10-14 23:18:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:18:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:18:04,018 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:18:04,019 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:18:04,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:18:04,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:18:04 BoogieIcfgContainer [2020-10-14 23:18:04,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:18:04,055 INFO L168 Benchmark]: Toolchain (without parser) took 1803.49 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 104.4 MB in the beginning and 96.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:04,056 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:18:04,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.14 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 103.9 MB in the beginning and 180.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:04,058 INFO L168 Benchmark]: Boogie Preprocessor took 56.68 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 178.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:04,059 INFO L168 Benchmark]: RCFGBuilder took 423.38 ms. Allocated memory is still 203.9 MB. Free memory was 178.7 MB in the beginning and 156.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:04,060 INFO L168 Benchmark]: TraceAbstraction took 964.24 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 96.6 MB in the end (delta: 59.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:18:04,064 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 353.14 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 103.9 MB in the beginning and 180.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.68 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 178.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.38 ms. Allocated memory is still 203.9 MB. Free memory was 178.7 MB in the beginning and 156.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 964.24 ms. Allocated memory is still 203.9 MB. Free memory was 156.4 MB in the beginning and 96.6 MB in the end (delta: 59.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 0.3s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...