/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:20:34,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:20:34,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:20:34,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:20:34,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:20:34,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:20:34,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:20:34,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:20:34,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:20:34,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:20:34,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:20:34,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:20:34,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:20:34,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:20:34,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:20:34,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:20:34,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:20:34,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:20:34,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:20:34,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:20:34,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:20:34,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:20:34,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:20:34,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:20:34,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:20:34,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:20:34,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:20:34,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:20:34,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:20:34,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:20:34,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:20:34,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:20:34,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:20:34,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:20:34,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:20:34,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:20:34,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:20:34,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:20:34,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:20:34,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:20:34,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:20:34,599 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 [2020-09-21 12:20:34,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:20:34,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:20:34,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:20:34,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:20:34,655 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:20:34,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:20:34,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:20:34,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:20:34,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:20:34,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:20:34,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:20:34,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:20:34,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:20:34,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:20:34,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:20:34,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:20:34,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:20:34,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:20:34,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:20:34,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:20:34,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:20:34,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:20:34,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:20:34,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:20:34,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:20:34,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:20:34,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:20:34,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:20:34,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:20:34,663 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:20:35,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:20:35,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:20:35,159 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:20:35,161 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:20:35,161 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:20:35,162 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-09-21 12:20:35,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a7549d4d/bb5126abbcd94e1c926cb0e4eda7593d/FLAGf6bfe15b8 [2020-09-21 12:20:35,814 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:20:35,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-09-21 12:20:35,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a7549d4d/bb5126abbcd94e1c926cb0e4eda7593d/FLAGf6bfe15b8 [2020-09-21 12:20:36,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a7549d4d/bb5126abbcd94e1c926cb0e4eda7593d [2020-09-21 12:20:36,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:20:36,164 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:20:36,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:36,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:20:36,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:20:36,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:36" (1/1) ... [2020-09-21 12:20:36,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4241192c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36, skipping insertion in model container [2020-09-21 12:20:36,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:36" (1/1) ... [2020-09-21 12:20:36,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:20:36,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:20:36,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:36,533 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:20:36,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:36,743 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:20:36,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36 WrapperNode [2020-09-21 12:20:36,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:36,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:20:36,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:20:36,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:20:36,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36" (1/1) ... [2020-09-21 12:20:36,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36" (1/1) ... [2020-09-21 12:20:36,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36" (1/1) ... [2020-09-21 12:20:36,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36" (1/1) ... [2020-09-21 12:20:36,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36" (1/1) ... [2020-09-21 12:20:36,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36" (1/1) ... [2020-09-21 12:20:36,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36" (1/1) ... [2020-09-21 12:20:36,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:20:36,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:20:36,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:20:36,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:20:36,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36" (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 [2020-09-21 12:20:36,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:20:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:20:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 12:20:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-09-21 12:20:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:20:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:20:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 12:20:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-09-21 12:20:36,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:20:36,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:20:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:20:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:20:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:20:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:20:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:20:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:20:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:20:37,338 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:20:37,338 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 12:20:37,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:37 BoogieIcfgContainer [2020-09-21 12:20:37,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:20:37,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:20:37,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:20:37,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:20:37,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:20:36" (1/3) ... [2020-09-21 12:20:37,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3e42cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:37, skipping insertion in model container [2020-09-21 12:20:37,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:36" (2/3) ... [2020-09-21 12:20:37,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3e42cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:37, skipping insertion in model container [2020-09-21 12:20:37,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:37" (3/3) ... [2020-09-21 12:20:37,355 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-09-21 12:20:37,369 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:20:37,378 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:20:37,403 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:20:37,437 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:20:37,438 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:20:37,438 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:20:37,438 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:20:37,438 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:20:37,438 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:20:37,438 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:20:37,438 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:20:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-09-21 12:20:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 12:20:37,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:37,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:20:37,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:37,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:37,479 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-09-21 12:20:37,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:37,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520737600] [2020-09-21 12:20:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:37,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:37,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:37,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:20:37,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-21 12:20:37,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:20:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:20:37,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:37,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:37,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:37,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:37,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:37,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 12:20:37,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:37,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:37,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:37,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:20:37,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:37,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:20:37,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:37,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:20:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:37,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:20:37,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520737600] [2020-09-21 12:20:37,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:37,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:20:37,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590010990] [2020-09-21 12:20:37,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:20:37,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:37,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:20:37,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:20:37,937 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-09-21 12:20:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:38,160 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-09-21 12:20:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:20:38,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-21 12:20:38,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:38,177 INFO L225 Difference]: With dead ends: 76 [2020-09-21 12:20:38,178 INFO L226 Difference]: Without dead ends: 38 [2020-09-21 12:20:38,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:20:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-21 12:20:38,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-21 12:20:38,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-21 12:20:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-09-21 12:20:38,236 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-09-21 12:20:38,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:38,237 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-09-21 12:20:38,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:20:38,237 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-09-21 12:20:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:20:38,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:38,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:20:38,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:20:38,239 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:38,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:38,240 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-09-21 12:20:38,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:38,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545729007] [2020-09-21 12:20:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:20:38,292 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:20:38,293 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:20:38,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:20:38,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:20:38 BoogieIcfgContainer [2020-09-21 12:20:38,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:20:38,325 INFO L168 Benchmark]: Toolchain (without parser) took 2161.51 ms. Allocated memory was 141.6 MB in the beginning and 208.7 MB in the end (delta: 67.1 MB). Free memory was 103.0 MB in the beginning and 110.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 60.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,326 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.07 ms. Allocated memory was 141.6 MB in the beginning and 208.7 MB in the end (delta: 67.1 MB). Free memory was 102.4 MB in the beginning and 186.4 MB in the end (delta: -84.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,328 INFO L168 Benchmark]: Boogie Preprocessor took 104.92 ms. Allocated memory is still 208.7 MB. Free memory was 186.4 MB in the beginning and 184.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,329 INFO L168 Benchmark]: RCFGBuilder took 493.03 ms. Allocated memory is still 208.7 MB. Free memory was 184.5 MB in the beginning and 163.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,330 INFO L168 Benchmark]: TraceAbstraction took 974.43 ms. Allocated memory is still 208.7 MB. Free memory was 162.5 MB in the beginning and 110.0 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:38,334 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 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 581.07 ms. Allocated memory was 141.6 MB in the beginning and 208.7 MB in the end (delta: 67.1 MB). Free memory was 102.4 MB in the beginning and 186.4 MB in the end (delta: -84.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.92 ms. Allocated memory is still 208.7 MB. Free memory was 186.4 MB in the beginning and 184.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.03 ms. Allocated memory is still 208.7 MB. Free memory was 184.5 MB in the beginning and 163.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 974.43 ms. Allocated memory is still 208.7 MB. Free memory was 162.5 MB in the beginning and 110.0 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...