/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=0.1 --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 09:57:52,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:57:52,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:57:52,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:57:52,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:57:52,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:57:52,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:57:52,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:57:52,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:57:52,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:57:52,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:57:52,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:57:52,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:57:52,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:57:52,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:57:52,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:57:52,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:57:52,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:57:52,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:57:52,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:57:52,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:57:52,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:57:52,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:57:52,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:57:52,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:57:52,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:57:52,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:57:52,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:57:52,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:57:52,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:57:52,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:57:52,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:57:52,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:57:52,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:57:52,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:57:52,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:57:52,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:57:52,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:57:52,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:57:52,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:57:52,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:57:52,320 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 09:57:52,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:57:52,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:57:52,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:57:52,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:57:52,372 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:57:52,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:57:52,373 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:57:52,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:57:52,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:57:52,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:57:52,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:57:52,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:57:52,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:57:52,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:57:52,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:57:52,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:57:52,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:57:52,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:57:52,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:57:52,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:57:52,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:57:52,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:57:52,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:57:52,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:57:52,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:57:52,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:57:52,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:57:52,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:57:52,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:57:52,379 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 09:57:53,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:57:53,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:57:53,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:57:53,091 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:57:53,091 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:57:53,093 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 09:57:53,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6a982aac/3315846e27034ff081a96061bd7987e1/FLAG316b4ac70 [2020-09-25 09:57:53,767 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:57:53,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 09:57:53,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6a982aac/3315846e27034ff081a96061bd7987e1/FLAG316b4ac70 [2020-09-25 09:57:54,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6a982aac/3315846e27034ff081a96061bd7987e1 [2020-09-25 09:57:54,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:57:54,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:57:54,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:57:54,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:57:54,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:57:54,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:57:54" (1/1) ... [2020-09-25 09:57:54,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f887f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:54, skipping insertion in model container [2020-09-25 09:57:54,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:57:54" (1/1) ... [2020-09-25 09:57:54,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:57:54,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:57:54,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:57:54,469 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:57:54,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:57:54,690 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:57:54,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:54 WrapperNode [2020-09-25 09:57:54,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:57:54,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:57:54,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:57:54,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:57:54,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:54" (1/1) ... [2020-09-25 09:57:54,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:54" (1/1) ... [2020-09-25 09:57:54,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:54" (1/1) ... [2020-09-25 09:57:54,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:54" (1/1) ... [2020-09-25 09:57:54,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:54" (1/1) ... [2020-09-25 09:57:54,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:54" (1/1) ... [2020-09-25 09:57:54,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:54" (1/1) ... [2020-09-25 09:57:54,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:57:54,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:57:54,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:57:54,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:57:54,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:54" (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 09:57:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:57:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:57:54,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 09:57:54,844 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-25 09:57:54,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 09:57:54,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:57:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:57:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 09:57:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 09:57:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-25 09:57:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 09:57:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 09:57:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 09:57:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 09:57:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 09:57:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 09:57:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 09:57:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:57:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:57:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-25 09:57:54,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:57:55,668 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:57:55,669 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-25 09:57:55,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:57:55 BoogieIcfgContainer [2020-09-25 09:57:55,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:57:55,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:57:55,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:57:55,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:57:55,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:57:54" (1/3) ... [2020-09-25 09:57:55,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18766bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:57:55, skipping insertion in model container [2020-09-25 09:57:55,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:57:54" (2/3) ... [2020-09-25 09:57:55,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18766bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:57:55, skipping insertion in model container [2020-09-25 09:57:55,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:57:55" (3/3) ... [2020-09-25 09:57:55,688 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-09-25 09:57:55,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:57:55,713 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:57:55,735 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:57:55,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:57:55,766 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:57:55,766 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:57:55,766 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:57:55,766 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:57:55,766 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:57:55,767 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:57:55,767 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:57:55,795 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-09-25 09:57:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 09:57:55,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:57:55,809 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 09:57:55,809 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:57:55,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:57:55,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1608489446, now seen corresponding path program 1 times [2020-09-25 09:57:55,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:57:55,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556794838] [2020-09-25 09:57:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:57:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:56,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:56,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 09:57:56,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:57:56,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 09:57:56,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:56,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:56,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:57:56,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 09:57:56,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:57:56,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:57:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:57:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:56,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:56,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:56,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:57:56,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:57:56,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:57:56,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:56,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:57:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:57:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:57:56,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:57:56,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 09:57:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:57:56,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:56,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:57:56,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:57:56,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 09:57:56,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:57:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:57:56,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:57:56,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:57:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:57:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:57:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:57:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 20 [2020-09-25 09:57:56,446 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 09:57:56,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556794838] [2020-09-25 09:57:56,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:57:56,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:57:56,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124999394] [2020-09-25 09:57:56,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:57:56,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:57:56,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:57:56,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:57:56,480 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 4 states. [2020-09-25 09:57:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:57:57,112 INFO L93 Difference]: Finished difference Result 415 states and 505 transitions. [2020-09-25 09:57:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 09:57:57,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 09:57:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:57:57,131 INFO L225 Difference]: With dead ends: 415 [2020-09-25 09:57:57,132 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 09:57:57,138 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 09:57:57,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 09:57:57,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-09-25 09:57:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-25 09:57:57,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2020-09-25 09:57:57,209 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 46 [2020-09-25 09:57:57,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:57:57,210 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2020-09-25 09:57:57,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:57:57,210 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2020-09-25 09:57:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 09:57:57,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:57:57,214 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 09:57:57,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:57:57,215 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:57:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:57:57,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1262573606, now seen corresponding path program 1 times [2020-09-25 09:57:57,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:57:57,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191920678] [2020-09-25 09:57:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:57:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 09:57:57,308 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 09:57:57,308 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 09:57:57,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:57:57,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:57:57 BoogieIcfgContainer [2020-09-25 09:57:57,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 09:57:57,365 INFO L168 Benchmark]: Toolchain (without parser) took 3252.38 ms. Allocated memory was 141.6 MB in the beginning and 234.4 MB in the end (delta: 92.8 MB). Free memory was 103.8 MB in the beginning and 127.3 MB in the end (delta: -23.5 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:57,369 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 09:57:57,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.22 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 103.2 MB in the beginning and 180.9 MB in the end (delta: -77.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:57,372 INFO L168 Benchmark]: Boogie Preprocessor took 73.84 ms. Allocated memory is still 205.5 MB. Free memory was 180.9 MB in the beginning and 178.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:57,373 INFO L168 Benchmark]: RCFGBuilder took 911.00 ms. Allocated memory is still 205.5 MB. Free memory was 178.0 MB in the beginning and 130.4 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:57,382 INFO L168 Benchmark]: TraceAbstraction took 1682.44 ms. Allocated memory was 205.5 MB in the beginning and 234.4 MB in the end (delta: 28.8 MB). Free memory was 129.8 MB in the beginning and 127.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2020-09-25 09:57:57,393 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 572.22 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 103.2 MB in the beginning and 180.9 MB in the end (delta: -77.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.84 ms. Allocated memory is still 205.5 MB. Free memory was 180.9 MB in the beginning and 178.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 911.00 ms. Allocated memory is still 205.5 MB. Free memory was 178.0 MB in the beginning and 130.4 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1682.44 ms. Allocated memory was 205.5 MB in the beginning and 234.4 MB in the end (delta: 28.8 MB). Free memory was 129.8 MB in the beginning and 127.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 31.3 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: 1.5s, 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...