/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 enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -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 0.1.25-5644d1e-m [2020-08-19 04:20:13,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:20:13,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:20:13,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:20:13,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:20:13,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:20:13,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:20:13,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:20:13,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:20:13,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:20:13,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:20:13,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:20:13,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:20:13,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:20:13,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:20:13,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:20:13,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:20:13,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:20:13,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:20:13,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:20:13,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:20:13,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:20:13,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:20:13,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:20:13,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:20:13,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:20:13,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:20:13,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:20:13,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:20:13,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:20:13,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:20:13,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:20:13,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:20:13,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:20:13,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:20:13,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:20:13,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:20:13,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:20:13,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:20:13,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:20:13,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:20:13,508 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 [2020-08-19 04:20:13,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:20:13,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:20:13,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:20:13,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:20:13,567 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:20:13,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:20:13,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:20:13,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:20:13,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:20:13,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:20:13,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:20:13,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:20:13,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:20:13,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:20:13,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:20:13,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:20:13,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:20:13,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:20:13,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:20:13,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:20:13,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:20:13,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:20:13,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:20:13,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:20:13,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:20:13,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:20:13,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:20:13,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:20:13,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:20:13,573 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 -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:20:13,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:20:13,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:20:13,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:20:13,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:20:13,944 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:20:13,945 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-19 04:20:14,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14fc58c3b/62fa782a24204c88992e24939f261c66/FLAG129b90e58 [2020-08-19 04:20:14,445 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:20:14,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-19 04:20:14,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14fc58c3b/62fa782a24204c88992e24939f261c66/FLAG129b90e58 [2020-08-19 04:20:14,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14fc58c3b/62fa782a24204c88992e24939f261c66 [2020-08-19 04:20:14,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:20:14,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:20:14,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:14,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:20:14,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:20:14,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:14" (1/1) ... [2020-08-19 04:20:14,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d17223b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:14, skipping insertion in model container [2020-08-19 04:20:14,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:14" (1/1) ... [2020-08-19 04:20:14,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:20:14,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:20:15,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:15,061 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:20:15,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:15,198 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:20:15,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:15 WrapperNode [2020-08-19 04:20:15,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:15,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:20:15,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:20:15,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:20:15,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:15" (1/1) ... [2020-08-19 04:20:15,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:15" (1/1) ... [2020-08-19 04:20:15,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:15" (1/1) ... [2020-08-19 04:20:15,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:15" (1/1) ... [2020-08-19 04:20:15,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:15" (1/1) ... [2020-08-19 04:20:15,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:15" (1/1) ... [2020-08-19 04:20:15,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:15" (1/1) ... [2020-08-19 04:20:15,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:20:15,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:20:15,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:20:15,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:20:15,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:15" (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 [2020-08-19 04:20:15,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:20:15,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:20:15,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 04:20:15,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-19 04:20:15,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:20:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:20:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 04:20:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-19 04:20:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:20:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 04:20:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:20:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:20:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:20:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 04:20:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:20:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:20:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:20:15,682 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:20:15,682 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 04:20:15,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:15 BoogieIcfgContainer [2020-08-19 04:20:15,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:20:15,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:20:15,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:20:15,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:20:15,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:20:14" (1/3) ... [2020-08-19 04:20:15,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342d36ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:15, skipping insertion in model container [2020-08-19 04:20:15,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:15" (2/3) ... [2020-08-19 04:20:15,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342d36ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:15, skipping insertion in model container [2020-08-19 04:20:15,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:15" (3/3) ... [2020-08-19 04:20:15,695 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-19 04:20:15,705 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:20:15,712 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:20:15,728 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:20:15,769 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:20:15,770 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:20:15,770 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:20:15,770 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:20:15,770 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:20:15,770 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:20:15,770 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:20:15,770 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:20:15,789 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-19 04:20:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 04:20:15,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:15,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:20:15,797 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:15,803 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-19 04:20:15,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:15,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874437932] [2020-08-19 04:20:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:15,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:20:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:16,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:20:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:20:16,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874437932] [2020-08-19 04:20:16,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:20:16,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:20:16,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582319607] [2020-08-19 04:20:16,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:20:16,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:20:16,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:20:16,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:20:16,063 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-19 04:20:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:20:16,354 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-19 04:20:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:20:16,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-19 04:20:16,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:20:16,377 INFO L225 Difference]: With dead ends: 76 [2020-08-19 04:20:16,380 INFO L226 Difference]: Without dead ends: 38 [2020-08-19 04:20:16,387 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 [2020-08-19 04:20:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-19 04:20:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-19 04:20:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-19 04:20:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-19 04:20:16,427 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-19 04:20:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:20:16,428 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-19 04:20:16,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:20:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-19 04:20:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:20:16,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:16,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:20:16,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:20:16,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:16,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:16,431 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-19 04:20:16,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:16,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771988163] [2020-08-19 04:20:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:20:16,481 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:20:16,481 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:20:16,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:20:16,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:20:16 BoogieIcfgContainer [2020-08-19 04:20:16,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:20:16,512 INFO L168 Benchmark]: Toolchain (without parser) took 1669.33 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 103.1 MB in the beginning and 109.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:16,513 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:20:16,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.52 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 102.6 MB in the beginning and 179.2 MB in the end (delta: -76.6 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:16,518 INFO L168 Benchmark]: Boogie Preprocessor took 45.33 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 177.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:16,519 INFO L168 Benchmark]: RCFGBuilder took 441.92 ms. Allocated memory is still 201.3 MB. Free memory was 177.3 MB in the beginning and 155.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:16,520 INFO L168 Benchmark]: TraceAbstraction took 819.38 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 109.0 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:16,528 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.52 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 102.6 MB in the beginning and 179.2 MB in the end (delta: -76.6 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.33 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 177.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 441.92 ms. Allocated memory is still 201.3 MB. Free memory was 177.3 MB in the beginning and 155.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 819.38 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 109.0 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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, 0.0s 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, 0.1s 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...