/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 05:24:49,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:24:49,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:24:49,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:24:49,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:24:49,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:24:49,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:24:49,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:24:49,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:24:49,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:24:49,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:24:49,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:24:49,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:24:49,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:24:49,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:24:49,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:24:49,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:24:49,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:24:49,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:24:49,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:24:49,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:24:49,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:24:49,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:24:49,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:24:49,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:24:49,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:24:49,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:24:49,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:24:49,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:24:49,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:24:49,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:24:49,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:24:49,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:24:49,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:24:49,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:24:49,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:24:49,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:24:49,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:24:49,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:24:49,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:24:49,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:24:49,988 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 05:24:50,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:24:50,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:24:50,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:24:50,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:24:50,018 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:24:50,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:24:50,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:24:50,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:24:50,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:24:50,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:24:50,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:24:50,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:24:50,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:24:50,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:24:50,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:24:50,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:24:50,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:24:50,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:24:50,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:24:50,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:24:50,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:24:50,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:24:50,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:24:50,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:24:50,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:24:50,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:24:50,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:24:50,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:24:50,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:24:50,023 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:24:50,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:24:50,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:24:50,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:24:50,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:24:50,556 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:24:50,557 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 05:24:50,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44e762cc9/e83f378ac6f3447286ddfa1c59e1c33c/FLAG192a3a8fe [2020-09-25 05:24:51,220 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:24:51,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 05:24:51,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44e762cc9/e83f378ac6f3447286ddfa1c59e1c33c/FLAG192a3a8fe [2020-09-25 05:24:51,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44e762cc9/e83f378ac6f3447286ddfa1c59e1c33c [2020-09-25 05:24:51,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:24:51,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:24:51,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:24:51,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:24:51,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:24:51,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:24:51" (1/1) ... [2020-09-25 05:24:51,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6f757b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:51, skipping insertion in model container [2020-09-25 05:24:51,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:24:51" (1/1) ... [2020-09-25 05:24:51,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:24:51,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:24:51,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:24:51,954 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:24:52,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:24:52,132 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:24:52,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:52 WrapperNode [2020-09-25 05:24:52,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:24:52,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:24:52,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:24:52,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:24:52,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:52" (1/1) ... [2020-09-25 05:24:52,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:52" (1/1) ... [2020-09-25 05:24:52,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:52" (1/1) ... [2020-09-25 05:24:52,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:52" (1/1) ... [2020-09-25 05:24:52,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:52" (1/1) ... [2020-09-25 05:24:52,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:52" (1/1) ... [2020-09-25 05:24:52,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:52" (1/1) ... [2020-09-25 05:24:52,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:24:52,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:24:52,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:24:52,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:24:52,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:52" (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 05:24:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:24:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:24:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 05:24:52,292 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-25 05:24:52,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 05:24:52,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:24:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:24:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 05:24:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 05:24:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-25 05:24:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:24:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 05:24:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:24:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:24:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 05:24:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:24:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 05:24:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:24:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:24:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-25 05:24:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:24:53,037 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:24:53,037 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-25 05:24:53,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:24:53 BoogieIcfgContainer [2020-09-25 05:24:53,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:24:53,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:24:53,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:24:53,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:24:53,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:24:51" (1/3) ... [2020-09-25 05:24:53,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2cc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:24:53, skipping insertion in model container [2020-09-25 05:24:53,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:24:52" (2/3) ... [2020-09-25 05:24:53,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2cc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:24:53, skipping insertion in model container [2020-09-25 05:24:53,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:24:53" (3/3) ... [2020-09-25 05:24:53,057 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-09-25 05:24:53,070 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:24:53,083 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:24:53,107 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:24:53,144 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:24:53,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:24:53,145 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:24:53,145 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:24:53,145 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:24:53,145 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:24:53,145 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:24:53,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:24:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-09-25 05:24:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 05:24:53,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:24:53,188 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 05:24:53,189 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:24:53,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:24:53,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1608489446, now seen corresponding path program 1 times [2020-09-25 05:24:53,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:24:53,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152267642] [2020-09-25 05:24:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:24:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:53,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:53,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 05:24:53,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:24:53,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-25 05:24:53,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:53,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:24:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:53,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:24:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:24:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:53,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:53,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:24:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:24:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 05:24:53,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:53,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:24:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:53,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 05:24:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:24:53,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:24:53,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:24:53,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 05:24:53,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:24:53,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:24:53,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:24:53,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:24:53,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:24:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:24:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:24:53,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:24:53,869 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 05:24:53,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152267642] [2020-09-25 05:24:53,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:24:53,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:24:53,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189001747] [2020-09-25 05:24:53,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:24:53,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:24:53,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:24:53,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:24:53,931 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 4 states. [2020-09-25 05:24:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:24:54,493 INFO L93 Difference]: Finished difference Result 415 states and 505 transitions. [2020-09-25 05:24:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:24:54,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 05:24:54,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:24:54,515 INFO L225 Difference]: With dead ends: 415 [2020-09-25 05:24:54,515 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 05:24:54,523 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 05:24:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 05:24:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-09-25 05:24:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-25 05:24:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2020-09-25 05:24:54,606 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 46 [2020-09-25 05:24:54,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:24:54,609 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2020-09-25 05:24:54,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:24:54,609 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2020-09-25 05:24:54,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 05:24:54,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:24:54,617 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 05:24:54,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:24:54,618 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:24:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:24:54,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1262573606, now seen corresponding path program 1 times [2020-09-25 05:24:54,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:24:54,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360982335] [2020-09-25 05:24:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:24:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 05:24:54,755 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 05:24:54,757 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 05:24:54,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:24:54,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:24:54 BoogieIcfgContainer [2020-09-25 05:24:54,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:24:54,816 INFO L168 Benchmark]: Toolchain (without parser) took 3220.96 ms. Allocated memory was 138.4 MB in the beginning and 232.8 MB in the end (delta: 94.4 MB). Free memory was 101.7 MB in the beginning and 130.0 MB in the end (delta: -28.3 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:54,818 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:24:54,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 528.57 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 176.4 MB in the end (delta: -75.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:54,821 INFO L168 Benchmark]: Boogie Preprocessor took 73.29 ms. Allocated memory is still 201.3 MB. Free memory was 176.4 MB in the beginning and 173.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:54,821 INFO L168 Benchmark]: RCFGBuilder took 839.29 ms. Allocated memory is still 201.3 MB. Free memory was 173.3 MB in the beginning and 125.9 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:54,831 INFO L168 Benchmark]: TraceAbstraction took 1764.41 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 125.2 MB in the beginning and 130.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:24:54,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 528.57 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 176.4 MB in the end (delta: -75.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.29 ms. Allocated memory is still 201.3 MB. Free memory was 176.4 MB in the beginning and 173.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 839.29 ms. Allocated memory is still 201.3 MB. Free memory was 173.3 MB in the beginning and 125.9 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1764.41 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 125.2 MB in the beginning and 130.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 26.7 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, 0.5s 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...