/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_1052b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:20:30,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:20:30,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:20:30,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:20:30,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:20:30,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:20:30,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:20:30,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:20:30,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:20:30,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:20:30,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:20:30,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:20:30,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:20:30,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:20:30,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:20:30,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:20:30,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:20:30,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:20:30,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:20:30,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:20:30,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:20:30,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:20:30,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:20:30,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:20:30,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:20:30,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:20:30,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:20:30,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:20:30,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:20:30,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:20:30,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:20:30,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:20:30,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:20:30,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:20:30,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:20:30,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:20:30,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:20:30,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:20:30,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:20:30,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:20:30,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:20:30,608 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 12:20:30,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:20:30,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:20:30,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:20:30,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:20:30,638 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:20:30,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:20:30,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:20:30,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:20:30,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:20:30,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:20:30,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:20:30,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:20:30,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:20:30,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:20:30,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:20:30,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:20:30,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:20:30,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:20:30,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:20:30,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:20:30,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:20:30,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:20:30,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:20:30,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:20:30,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:20:30,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:20:30,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:20:30,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:20:30,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:20:30,644 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 12:20:31,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:20:31,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:20:31,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:20:31,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:20:31,185 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:20:31,187 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052b.c [2020-09-21 12:20:31,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ed4d0672/eb304bc50cd54b38ad07eeba13a4f424/FLAGefb1e72b9 [2020-09-21 12:20:31,840 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:20:31,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052b.c [2020-09-21 12:20:31,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ed4d0672/eb304bc50cd54b38ad07eeba13a4f424/FLAGefb1e72b9 [2020-09-21 12:20:32,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ed4d0672/eb304bc50cd54b38ad07eeba13a4f424 [2020-09-21 12:20:32,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:20:32,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:20:32,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:32,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:20:32,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:20:32,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4700e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32, skipping insertion in model container [2020-09-21 12:20:32,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:20:32,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:20:32,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:32,473 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:20:32,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:32,643 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:20:32,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32 WrapperNode [2020-09-21 12:20:32,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:32,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:20:32,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:20:32,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:20:32,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (1/1) ... [2020-09-21 12:20:32,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:20:32,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:20:32,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:20:32,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:20:32,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (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 12:20:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:20:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:20:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-21 12:20:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-21 12:20:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:20:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:20:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-21 12:20:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:20:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:20:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-21 12:20:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:20:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:20:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:20:33,215 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:20:33,215 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-21 12:20:33,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:33 BoogieIcfgContainer [2020-09-21 12:20:33,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:20:33,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:20:33,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:20:33,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:20:33,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:20:32" (1/3) ... [2020-09-21 12:20:33,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3ae018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:33, skipping insertion in model container [2020-09-21 12:20:33,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:32" (2/3) ... [2020-09-21 12:20:33,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3ae018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:33, skipping insertion in model container [2020-09-21 12:20:33,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:33" (3/3) ... [2020-09-21 12:20:33,231 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052b.c [2020-09-21 12:20:33,244 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:20:33,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:20:33,277 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:20:33,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:20:33,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:20:33,316 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:20:33,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:20:33,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:20:33,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:20:33,317 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:20:33,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:20:33,340 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-09-21 12:20:33,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:20:33,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:33,349 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] [2020-09-21 12:20:33,350 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:33,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:33,357 INFO L82 PathProgramCache]: Analyzing trace with hash -2000118749, now seen corresponding path program 1 times [2020-09-21 12:20:33,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:33,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764915437] [2020-09-21 12:20:33,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:33,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:33,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:33,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 12:20:33,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:20:33,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-21 12:20:33,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:20:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:20:33,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:33,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:33,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:33,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:33,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:33,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:20:33,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:33,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:33,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:33,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:33,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:34,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:34,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:34,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:20:34,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:34,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:20:34,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:20:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:34,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:34,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:20:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:34,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:34,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:34,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:20:34,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:20:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-21 12:20:34,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:20:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:34,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:34,183 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 12:20:34,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764915437] [2020-09-21 12:20:34,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:34,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:20:34,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074581204] [2020-09-21 12:20:34,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:20:34,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:34,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:20:34,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:20:34,223 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-09-21 12:20:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:34,473 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2020-09-21 12:20:34,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:20:34,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 12:20:34,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:34,491 INFO L225 Difference]: With dead ends: 92 [2020-09-21 12:20:34,491 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 12:20:34,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 12:20:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 12:20:34,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-21 12:20:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-21 12:20:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2020-09-21 12:20:34,596 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 25 [2020-09-21 12:20:34,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:34,597 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2020-09-21 12:20:34,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:20:34,597 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2020-09-21 12:20:34,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:20:34,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:34,605 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] [2020-09-21 12:20:34,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:20:34,606 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:34,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:34,606 INFO L82 PathProgramCache]: Analyzing trace with hash 784957124, now seen corresponding path program 1 times [2020-09-21 12:20:34,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:34,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059409487] [2020-09-21 12:20:34,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:20:34,732 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:20:34,732 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:20:34,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:20:34,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:20:34 BoogieIcfgContainer [2020-09-21 12:20:34,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:20:34,805 INFO L168 Benchmark]: Toolchain (without parser) took 2622.99 ms. Allocated memory was 147.8 MB in the beginning and 235.4 MB in the end (delta: 87.6 MB). Free memory was 104.1 MB in the beginning and 196.0 MB in the end (delta: -91.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:20:34,809 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:20:34,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.90 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.4 MB in the beginning and 181.8 MB in the end (delta: -78.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:34,811 INFO L168 Benchmark]: Boogie Preprocessor took 56.42 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 179.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:34,812 INFO L168 Benchmark]: RCFGBuilder took 519.21 ms. Allocated memory is still 203.9 MB. Free memory was 179.8 MB in the beginning and 154.5 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:34,814 INFO L168 Benchmark]: TraceAbstraction took 1577.35 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 154.5 MB in the beginning and 196.0 MB in the end (delta: -41.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:20:34,826 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 460.90 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.4 MB in the beginning and 181.8 MB in the end (delta: -78.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.42 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 179.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 519.21 ms. Allocated memory is still 203.9 MB. Free memory was 179.8 MB in the beginning and 154.5 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1577.35 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 154.5 MB in the beginning and 196.0 MB in the end (delta: -41.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 106]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 89, overapproximation of someBinaryArithmeticDOUBLEoperation at line 101, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L101] double x = -1.0 / 0.0; [L102] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L102] RET, EXPR floor_double(x) [L102] double res = floor_double(x); [L105] CALL, EXPR isinf_double(res) [L81] __int32_t hx, lx; [L83] ieee_double_shape_type ew_u; [L84] ew_u.value = (x) [L85] EXPR ew_u.parts.msw [L85] (hx) = ew_u.parts.msw [L86] EXPR ew_u.parts.lsw [L86] (lx) = ew_u.parts.lsw [L88] hx &= 0x7fffffff [L89] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L90] hx = 0x7ff00000 - hx [L91] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L105] RET, EXPR isinf_double(res) [L105] COND TRUE !isinf_double(res) [L106] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 53 SDslu, 5 SDs, 0 SdLazy, 63 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 0.6s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1440 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...