/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 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_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:04:14,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:04:14,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:04:14,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:04:14,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:04:14,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:04:14,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:04:14,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:04:14,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:04:14,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:04:14,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:04:14,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:04:14,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:04:14,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:04:14,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:04:14,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:04:14,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:04:14,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:04:14,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:04:14,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:04:14,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:04:14,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:04:14,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:04:14,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:04:14,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:04:14,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:04:14,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:04:14,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:04:14,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:04:14,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:04:14,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:04:14,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:04:14,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:04:14,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:04:14,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:04:14,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:04:14,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:04:14,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:04:14,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:04:14,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:04:14,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:04:14,579 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 [2020-08-21 14:04:14,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:04:14,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:04:14,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:04:14,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:04:14,602 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:04:14,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:04:14,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:04:14,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:04:14,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:04:14,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:04:14,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:04:14,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:04:14,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:04:14,604 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:04:14,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:04:14,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:04:14,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:04:14,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:04:14,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:04:14,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:04:14,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:04:14,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:04:14,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:04:14,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:04:14,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:04:14,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:04:14,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:04:14,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:04:14,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:04:14,607 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 -> log-additional-information=true; [2020-08-21 14:04:14,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:04:14,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:04:14,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:04:14,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:04:14,925 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:04:14,926 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-08-21 14:04:14,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8db81975e/6fe1bd6ae1a94932bc5268bed11ca68e/FLAGb0febcdc8 [2020-08-21 14:04:15,454 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:04:15,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-08-21 14:04:15,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8db81975e/6fe1bd6ae1a94932bc5268bed11ca68e/FLAGb0febcdc8 [2020-08-21 14:04:15,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8db81975e/6fe1bd6ae1a94932bc5268bed11ca68e [2020-08-21 14:04:15,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:04:15,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:04:15,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:04:15,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:04:15,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:04:15,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:04:15" (1/1) ... [2020-08-21 14:04:15,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4c9c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:15, skipping insertion in model container [2020-08-21 14:04:15,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:04:15" (1/1) ... [2020-08-21 14:04:15,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:04:15,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:04:16,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:04:16,138 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:04:16,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:04:16,193 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:04:16,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:16 WrapperNode [2020-08-21 14:04:16,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:04:16,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:04:16,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:04:16,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:04:16,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:16" (1/1) ... [2020-08-21 14:04:16,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:16" (1/1) ... [2020-08-21 14:04:16,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:16" (1/1) ... [2020-08-21 14:04:16,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:16" (1/1) ... [2020-08-21 14:04:16,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:16" (1/1) ... [2020-08-21 14:04:16,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:16" (1/1) ... [2020-08-21 14:04:16,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:16" (1/1) ... [2020-08-21 14:04:16,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:04:16,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:04:16,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:04:16,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:04:16,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:16" (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 [2020-08-21 14:04:16,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:04:16,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:04:16,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 14:04:16,397 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-08-21 14:04:16,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:04:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:04:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 14:04:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-08-21 14:04:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:04:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 14:04:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:04:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:04:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:04:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 14:04:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:04:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:04:16,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:04:16,727 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:04:16,728 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 14:04:16,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:04:16 BoogieIcfgContainer [2020-08-21 14:04:16,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:04:16,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:04:16,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:04:16,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:04:16,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:04:15" (1/3) ... [2020-08-21 14:04:16,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6b0e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:04:16, skipping insertion in model container [2020-08-21 14:04:16,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:16" (2/3) ... [2020-08-21 14:04:16,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6b0e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:04:16, skipping insertion in model container [2020-08-21 14:04:16,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:04:16" (3/3) ... [2020-08-21 14:04:16,748 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-08-21 14:04:16,769 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:04:16,789 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:04:16,803 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:04:16,824 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:04:16,824 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:04:16,824 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:04:16,824 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:04:16,824 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:04:16,824 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:04:16,824 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:04:16,825 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:04:16,842 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-08-21 14:04:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 14:04:16,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:16,849 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] [2020-08-21 14:04:16,850 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:16,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:16,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1071653874, now seen corresponding path program 1 times [2020-08-21 14:04:16,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:16,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946824867] [2020-08-21 14:04:16,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:17,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:04:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:17,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:04:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:17,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:04:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:04:17,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946824867] [2020-08-21 14:04:17,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:04:17,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:04:17,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684203364] [2020-08-21 14:04:17,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:04:17,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:04:17,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:04:17,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:04:17,131 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-08-21 14:04:17,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:04:17,324 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2020-08-21 14:04:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:04:17,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-21 14:04:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:04:17,339 INFO L225 Difference]: With dead ends: 70 [2020-08-21 14:04:17,339 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 14:04:17,343 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 [2020-08-21 14:04:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 14:04:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-21 14:04:17,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-21 14:04:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-08-21 14:04:17,388 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 23 [2020-08-21 14:04:17,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:04:17,389 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-08-21 14:04:17,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:04:17,389 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-08-21 14:04:17,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 14:04:17,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:17,393 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] [2020-08-21 14:04:17,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:04:17,394 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:17,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:17,395 INFO L82 PathProgramCache]: Analyzing trace with hash -308920579, now seen corresponding path program 1 times [2020-08-21 14:04:17,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:17,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139607266] [2020-08-21 14:04:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:04:17,447 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:04:17,447 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:04:17,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:04:17,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:04:17 BoogieIcfgContainer [2020-08-21 14:04:17,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:04:17,473 INFO L168 Benchmark]: Toolchain (without parser) took 1577.47 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 104.2 MB in the beginning and 116.8 MB in the end (delta: -12.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:17,474 INFO L168 Benchmark]: CDTParser took 0.24 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. [2020-08-21 14:04:17,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.49 ms. Allocated memory is still 140.5 MB. Free memory was 103.9 MB in the beginning and 92.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:17,476 INFO L168 Benchmark]: Boogie Preprocessor took 130.53 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.5 MB in the beginning and 180.5 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:17,477 INFO L168 Benchmark]: RCFGBuilder took 407.29 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 159.4 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:17,478 INFO L168 Benchmark]: TraceAbstraction took 736.30 ms. Allocated memory is still 202.9 MB. Free memory was 158.7 MB in the beginning and 116.8 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:17,482 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 298.49 ms. Allocated memory is still 140.5 MB. Free memory was 103.9 MB in the beginning and 92.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.53 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.5 MB in the beginning and 180.5 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.29 ms. Allocated memory is still 202.9 MB. Free memory was 180.5 MB in the beginning and 159.4 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 736.30 ms. Allocated memory is still 202.9 MB. Free memory was 158.7 MB in the beginning and 116.8 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 74, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L74] double x = 0.0 / 0.0; [L75] CALL, EXPR round_double(x) [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L27] COND TRUE exponent_less_1023 < 20 [L28] COND FALSE !(exponent_less_1023 < 0) [L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L36] return x; [L75] RET, EXPR round_double(x) [L75] double res = round_double(x); [L78] CALL, EXPR isnan_double(res) [L15] return x != x; [L78] RET, EXPR isnan_double(res) [L78] COND TRUE !isnan_double(res) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 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: 41 SDtfs, 37 SDslu, 5 SDs, 0 SdLazy, 43 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=39occurred 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, 946 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...