/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_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:20:13,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:20:13,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:20:13,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:20:13,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:20:13,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:20:13,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:20:13,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:20:13,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:20:13,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:20:13,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:20:13,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:20:13,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:20:13,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:20:13,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:20:13,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:20:13,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:20:13,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:20:13,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:20:13,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:20:13,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:20:13,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:20:13,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:20:13,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:20:13,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:20:13,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:20:13,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:20:13,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:20:13,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:20:13,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:20:13,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:20:13,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:20:13,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:20:13,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:20:13,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:20:13,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:20:13,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:20:13,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:20:13,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:20:13,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:20:13,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:20:13,387 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 04:20:13,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:20:13,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:20:13,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:20:13,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:20:13,411 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:20:13,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:20:13,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:20:13,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:20:13,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:20:13,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:20:13,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:20:13,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:20:13,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:20:13,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:20:13,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:20:13,413 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:20:13,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:20:13,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:20:13,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:20:13,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:20:13,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:20:13,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:20:13,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:20:13,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:20:13,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:20:13,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:20:13,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:20:13,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:20:13,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:20:13,416 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 04:20:13,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:20:13,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:20:13,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:20:13,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:20:13,730 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:20:13,731 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-19 04:20:13,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5024ff230/9a81da6f37914283831bcc468973ad39/FLAG173473d4c [2020-08-19 04:20:14,274 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:20:14,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-19 04:20:14,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5024ff230/9a81da6f37914283831bcc468973ad39/FLAG173473d4c [2020-08-19 04:20:14,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5024ff230/9a81da6f37914283831bcc468973ad39 [2020-08-19 04:20:14,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:20:14,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:20:14,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:14,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:20:14,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:20:14,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:14" (1/1) ... [2020-08-19 04:20:14,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a429c6c 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 04:20:14,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:14" (1/1) ... [2020-08-19 04:20:14,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:20:14,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:20:14,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:14,881 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:20:14,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:15,014 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:20:15,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:15 WrapperNode [2020-08-19 04:20:15,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:15,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:20:15,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:20:15,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:20:15,038 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 04:20:15,040 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 04:20:15,060 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 04:20:15,061 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 04:20:15,075 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 04:20:15,083 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 04:20:15,086 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 04:20:15,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:20:15,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:20:15,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:20:15,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:20:15,093 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 04:20:15,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:20:15,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:20:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 04:20:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-19 04:20:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:20:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:20:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 04:20:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-19 04:20:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:20:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 04:20:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:20:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:20:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:20:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 04:20:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:20:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:20:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:20:15,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:20:15,581 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 04:20:15,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:15 BoogieIcfgContainer [2020-08-19 04:20:15,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:20:15,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:20:15,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:20:15,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:20:15,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:20:14" (1/3) ... [2020-08-19 04:20:15,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d1adf0 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 04:20:15,591 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 04:20:15,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d1adf0 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 04:20:15,591 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 04:20:15,593 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-19 04:20:15,603 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:20:15,610 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:20:15,620 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:20:15,640 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:20:15,640 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:20:15,640 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:20:15,640 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:20:15,641 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:20:15,641 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:20:15,641 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:20:15,641 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:20:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-19 04:20:15,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 04:20:15,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:15,665 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] [2020-08-19 04:20:15,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:15,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:15,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-19 04:20:15,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:15,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614335038] [2020-08-19 04:20:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:20:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:15,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:20:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:15,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:20:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:15,954 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 04:20:15,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614335038] [2020-08-19 04:20:15,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:20:15,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:20:15,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568251599] [2020-08-19 04:20:15,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:20:15,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:20:15,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:20:15,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:20:15,984 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-19 04:20:16,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:20:16,190 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-19 04:20:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:20:16,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-19 04:20:16,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:20:16,204 INFO L225 Difference]: With dead ends: 86 [2020-08-19 04:20:16,205 INFO L226 Difference]: Without dead ends: 43 [2020-08-19 04:20:16,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 04:20:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-19 04:20:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-19 04:20:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 04:20:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-19 04:20:16,256 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-19 04:20:16,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:20:16,257 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-19 04:20:16,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:20:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-19 04:20:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 04:20:16,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:16,259 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] [2020-08-19 04:20:16,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:20:16,259 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:16,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:16,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-19 04:20:16,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:16,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431736132] [2020-08-19 04:20:16,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:20:16,315 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:20:16,316 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:20:16,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:20:16,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:20:16 BoogieIcfgContainer [2020-08-19 04:20:16,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:20:16,364 INFO L168 Benchmark]: Toolchain (without parser) took 1711.42 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.5 MB in the beginning and 107.5 MB in the end (delta: -5.0 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:16,365 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 04:20:16,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.99 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.3 MB in the beginning and 180.6 MB in the end (delta: -78.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:16,369 INFO L168 Benchmark]: Boogie Preprocessor took 69.78 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:16,370 INFO L168 Benchmark]: RCFGBuilder took 493.65 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 155.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:16,375 INFO L168 Benchmark]: TraceAbstraction took 773.82 ms. Allocated memory is still 201.9 MB. Free memory was 155.1 MB in the beginning and 107.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:16,381 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.99 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.3 MB in the beginning and 180.6 MB in the end (delta: -78.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.78 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.65 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 155.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 773.82 ms. Allocated memory is still 201.9 MB. Free memory was 155.1 MB in the beginning and 107.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: 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 someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] 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; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...