/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:05:11,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:05:11,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:05:11,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:05:11,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:05:11,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:05:11,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:05:11,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:05:11,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:05:11,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:05:11,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:05:11,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:05:11,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:05:11,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:05:11,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:05:11,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:05:11,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:05:11,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:05:11,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:05:11,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:05:11,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:05:11,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:05:11,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:05:11,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:05:11,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:05:11,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:05:11,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:05:11,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:05:11,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:05:11,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:05:11,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:05:11,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:05:11,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:05:11,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:05:11,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:05:11,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:05:11,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:05:11,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:05:11,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:05:11,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:05:11,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:05:11,797 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 [2020-09-25 11:05:11,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:05:11,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:05:11,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:05:11,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:05:11,842 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:05:11,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:05:11,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:05:11,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:05:11,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:05:11,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:05:11,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:05:11,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:05:11,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:05:11,846 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:05:11,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:05:11,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:05:11,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:05:11,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:05:11,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:05:11,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:05:11,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:05:11,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:05:11,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:05:11,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:05:11,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:05:11,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:05:11,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:05:11,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:05:11,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:05:11,849 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 -> SingleStatement 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; 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; 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; 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; 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; 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; [2020-09-25 11:05:12,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:05:12,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:05:12,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:05:12,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:05:12,333 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:05:12,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 11:05:12,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/870c7b78c/b9d1792f8e024eb89c4fcba94d0ddb1f/FLAGbe1c95baa [2020-09-25 11:05:12,982 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:05:12,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 11:05:12,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/870c7b78c/b9d1792f8e024eb89c4fcba94d0ddb1f/FLAGbe1c95baa [2020-09-25 11:05:13,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/870c7b78c/b9d1792f8e024eb89c4fcba94d0ddb1f [2020-09-25 11:05:13,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:05:13,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:05:13,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:05:13,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:05:13,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:05:13,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:13" (1/1) ... [2020-09-25 11:05:13,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16066104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:13, skipping insertion in model container [2020-09-25 11:05:13,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:13" (1/1) ... [2020-09-25 11:05:13,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:05:13,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:05:13,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:05:13,757 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:05:13,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:05:13,950 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:05:13,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:13 WrapperNode [2020-09-25 11:05:13,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:05:13,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:05:13,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:05:13,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:05:13,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:13" (1/1) ... [2020-09-25 11:05:13,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:13" (1/1) ... [2020-09-25 11:05:13,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:13" (1/1) ... [2020-09-25 11:05:13,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:13" (1/1) ... [2020-09-25 11:05:14,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:13" (1/1) ... [2020-09-25 11:05:14,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:13" (1/1) ... [2020-09-25 11:05:14,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:13" (1/1) ... [2020-09-25 11:05:14,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:05:14,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:05:14,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:05:14,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:05:14,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:13" (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 [2020-09-25 11:05:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:05:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:05:14,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 11:05:14,117 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-25 11:05:14,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 11:05:14,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:05:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:05:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 11:05:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 11:05:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-25 11:05:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 11:05:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 11:05:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:05:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:05:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 11:05:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:05:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 11:05:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:05:14,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:05:14,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-25 11:05:14,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:05:14,882 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:05:14,882 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-25 11:05:14,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:14 BoogieIcfgContainer [2020-09-25 11:05:14,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:05:14,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:05:14,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:05:14,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:05:14,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:05:13" (1/3) ... [2020-09-25 11:05:14,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15208c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:14, skipping insertion in model container [2020-09-25 11:05:14,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:13" (2/3) ... [2020-09-25 11:05:14,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15208c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:14, skipping insertion in model container [2020-09-25 11:05:14,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:14" (3/3) ... [2020-09-25 11:05:14,901 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-09-25 11:05:14,914 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:05:14,926 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:05:14,949 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:05:14,983 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:05:14,984 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:05:14,984 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:05:14,984 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:05:14,984 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:05:14,985 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:05:14,985 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:05:14,985 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:05:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-09-25 11:05:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 11:05:15,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:15,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:05:15,029 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:15,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:15,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1608489446, now seen corresponding path program 1 times [2020-09-25 11:05:15,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:15,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413954725] [2020-09-25 11:05:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:15,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:05:15,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:05:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-25 11:05:15,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:15,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 11:05:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:05:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:15,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:15,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:15,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:05:15,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:15,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:15,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:15,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:15,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 11:05:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:15,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:15,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 11:05:15,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:05:15,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:05:15,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:15,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:05:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:15,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:05:15,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413954725] [2020-09-25 11:05:15,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:05:15,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:05:15,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299801501] [2020-09-25 11:05:15,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:05:15,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:15,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:05:15,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:05:15,715 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 4 states. [2020-09-25 11:05:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:16,319 INFO L93 Difference]: Finished difference Result 415 states and 505 transitions. [2020-09-25 11:05:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 11:05:16,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 11:05:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:16,344 INFO L225 Difference]: With dead ends: 415 [2020-09-25 11:05:16,344 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 11:05:16,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:05:16,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 11:05:16,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-09-25 11:05:16,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-25 11:05:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2020-09-25 11:05:16,460 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 46 [2020-09-25 11:05:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:16,463 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2020-09-25 11:05:16,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:05:16,464 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2020-09-25 11:05:16,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 11:05:16,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:16,480 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:05:16,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:05:16,481 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:16,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:16,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1262573606, now seen corresponding path program 1 times [2020-09-25 11:05:16,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:16,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791392657] [2020-09-25 11:05:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:05:16,617 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:05:16,617 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:05:16,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:05:16,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:05:16 BoogieIcfgContainer [2020-09-25 11:05:16,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:05:16,681 INFO L168 Benchmark]: Toolchain (without parser) took 3329.17 ms. Allocated memory was 148.4 MB in the beginning and 232.3 MB in the end (delta: 83.9 MB). Free memory was 104.8 MB in the beginning and 123.7 MB in the end (delta: -18.9 MB). Peak memory consumption was 65.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:16,686 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 11:05:16,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.62 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 104.1 MB in the beginning and 180.1 MB in the end (delta: -76.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:16,689 INFO L168 Benchmark]: Boogie Preprocessor took 89.59 ms. Allocated memory is still 205.0 MB. Free memory was 180.1 MB in the beginning and 177.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:16,690 INFO L168 Benchmark]: RCFGBuilder took 847.93 ms. Allocated memory is still 205.0 MB. Free memory was 177.5 MB in the beginning and 129.5 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:16,699 INFO L168 Benchmark]: TraceAbstraction took 1785.69 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 128.9 MB in the beginning and 123.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:16,708 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 591.62 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 104.1 MB in the beginning and 180.1 MB in the end (delta: -76.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.59 ms. Allocated memory is still 205.0 MB. Free memory was 180.1 MB in the beginning and 177.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 847.93 ms. Allocated memory is still 205.0 MB. Free memory was 177.5 MB in the beginning and 129.5 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1785.69 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 128.9 MB in the beginning and 123.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 245 SDtfs, 45 SDslu, 184 SDs, 0 SdLazy, 266 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred 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, 0.4s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 3510 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...