/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:16:59,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:16:59,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:16:59,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:16:59,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:16:59,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:16:59,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:16:59,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:16:59,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:16:59,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:16:59,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:16:59,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:16:59,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:16:59,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:16:59,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:16:59,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:16:59,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:16:59,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:16:59,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:16:59,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:16:59,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:16:59,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:16:59,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:16:59,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:16:59,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:16:59,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:16:59,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:16:59,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:16:59,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:16:59,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:16:59,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:16:59,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:16:59,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:16:59,332 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:16:59,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:16:59,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:16:59,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:16:59,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:16:59,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:16:59,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:16:59,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:16:59,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:16:59,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:16:59,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:16:59,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:16:59,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:16:59,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:16:59,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:16:59,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:16:59,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:16:59,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:16:59,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:16:59,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:16:59,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:16:59,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:16:59,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:16:59,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:16:59,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:16:59,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:16:59,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:16:59,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:16:59,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:16:59,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:16:59,676 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:16:59,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-08-22 16:16:59,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0e22489/19150aaae3b7492ebd154d11b3722c71/FLAG8c078dfaa [2020-08-22 16:17:00,168 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:00,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-08-22 16:17:00,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0e22489/19150aaae3b7492ebd154d11b3722c71/FLAG8c078dfaa [2020-08-22 16:17:00,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0e22489/19150aaae3b7492ebd154d11b3722c71 [2020-08-22 16:17:00,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:00,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:00,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:00,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:00,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:00,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:00" (1/1) ... [2020-08-22 16:17:00,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:00, skipping insertion in model container [2020-08-22 16:17:00,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:00" (1/1) ... [2020-08-22 16:17:00,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:00,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:00,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:00,780 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:00,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:00,941 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:00,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:00 WrapperNode [2020-08-22 16:17:00,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:00,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:00,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:00,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:00,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:00" (1/1) ... [2020-08-22 16:17:00,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:00" (1/1) ... [2020-08-22 16:17:00,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:00" (1/1) ... [2020-08-22 16:17:00,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:00" (1/1) ... [2020-08-22 16:17:00,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:00" (1/1) ... [2020-08-22 16:17:01,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:00" (1/1) ... [2020-08-22 16:17:01,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:00" (1/1) ... [2020-08-22 16:17:01,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:01,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:01,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:01,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:01,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:17:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 16:17:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-08-22 16:17:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 16:17:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 16:17:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-08-22 16:17:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:17:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:17:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:17:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:17:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:17:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:17:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 16:17:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:01,423 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:01,424 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 16:17:01,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:01 BoogieIcfgContainer [2020-08-22 16:17:01,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:01,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:01,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:01,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:01,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:00" (1/3) ... [2020-08-22 16:17:01,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381f747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:01, skipping insertion in model container [2020-08-22 16:17:01,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:00" (2/3) ... [2020-08-22 16:17:01,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381f747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:01, skipping insertion in model container [2020-08-22 16:17:01,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:01" (3/3) ... [2020-08-22 16:17:01,438 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2020-08-22 16:17:01,451 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:01,462 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:01,494 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:01,527 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:01,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:01,527 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:01,528 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:01,528 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:01,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:01,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:01,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-22 16:17:01,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 16:17:01,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:01,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:01,557 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:01,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:01,562 INFO L82 PathProgramCache]: Analyzing trace with hash -597726452, now seen corresponding path program 1 times [2020-08-22 16:17:01,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:01,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499798082] [2020-08-22 16:17:01,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:01,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:17:01,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499798082] [2020-08-22 16:17:01,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:01,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:17:01,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642985956] [2020-08-22 16:17:01,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:17:01,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:01,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:17:01,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:17:01,808 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-08-22 16:17:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:02,018 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2020-08-22 16:17:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:17:02,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 16:17:02,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:02,032 INFO L225 Difference]: With dead ends: 78 [2020-08-22 16:17:02,032 INFO L226 Difference]: Without dead ends: 39 [2020-08-22 16:17:02,036 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 [2020-08-22 16:17:02,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-22 16:17:02,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-22 16:17:02,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 16:17:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-08-22 16:17:02,083 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2020-08-22 16:17:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:02,084 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-08-22 16:17:02,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:17:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-08-22 16:17:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 16:17:02,086 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:02,086 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] [2020-08-22 16:17:02,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:17:02,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:02,087 INFO L82 PathProgramCache]: Analyzing trace with hash -524929330, now seen corresponding path program 1 times [2020-08-22 16:17:02,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:02,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513957073] [2020-08-22 16:17:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:02,130 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:02,193 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:02,239 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:17:02,239 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:17:02,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:17:02,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:17:02 BoogieIcfgContainer [2020-08-22 16:17:02,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:17:02,283 INFO L168 Benchmark]: Toolchain (without parser) took 1738.18 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.4 MB in the beginning and 108.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:02,284 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 16:17:02,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.47 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 179.6 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:02,287 INFO L168 Benchmark]: Boogie Preprocessor took 72.97 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 177.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:02,287 INFO L168 Benchmark]: RCFGBuilder took 412.19 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 154.6 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:02,288 INFO L168 Benchmark]: TraceAbstraction took 850.66 ms. Allocated memory is still 201.3 MB. Free memory was 154.6 MB in the beginning and 108.8 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:02,292 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 394.47 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 179.6 MB in the end (delta: -78.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.97 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 177.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.19 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 154.6 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 850.66 ms. Allocated memory is still 201.3 MB. Free memory was 154.6 MB in the beginning and 108.8 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: 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 someUnaryDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 90. Possible FailurePath: [L86] double x = -0.0; [L87] CALL, EXPR round_double(x) VAL [\old(x)=4294967297] [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; VAL [\old(x)=4294967297, x=4294967297] [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 VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L27] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L28] COND FALSE !(exponent_less_1023 < 0) [L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L36] return x; VAL [\old(x)=4294967297, \result=4294967297, exponent_less_1023=0, lsw=0, msw=-1, x=4294967297] [L87] RET, EXPR round_double(x) VAL [round_double(x)=4294967297, x=4294967297] [L87] double res = round_double(x); [L90] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4294967297, res == -0.0 && __signbit_double(res) == 1=0, x=4294967297] [L90] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L91] __VERIFIER_error() VAL [res=4294967297, x=4294967297] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 40 SDslu, 5 SDs, 0 SdLazy, 50 SolverSat, 11 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=43occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 702 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...