/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 21:49:04,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 21:49:04,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 21:49:04,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 21:49:04,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 21:49:04,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 21:49:04,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 21:49:04,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 21:49:04,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 21:49:04,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 21:49:04,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 21:49:04,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 21:49:04,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 21:49:04,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 21:49:04,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 21:49:04,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 21:49:04,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 21:49:04,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 21:49:04,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 21:49:04,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 21:49:04,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 21:49:04,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 21:49:04,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 21:49:04,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 21:49:04,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 21:49:04,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 21:49:04,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 21:49:04,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 21:49:04,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 21:49:04,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 21:49:04,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 21:49:04,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 21:49:04,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 21:49:04,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 21:49:04,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 21:49:04,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 21:49:04,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 21:49:04,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 21:49:04,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 21:49:04,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 21:49:04,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 21:49:04,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 21:49:04,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 21:49:04,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 21:49:04,532 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 21:49:04,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 21:49:04,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 21:49:04,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:49:04,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 21:49:04,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 21:49:04,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 21:49:04,534 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-08-22 21:49:04,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 21:49:04,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 21:49:04,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 21:49:04,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 21:49:04,851 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 21:49:04,852 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-08-22 21:49:04,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b47c857/97a52a69cacd4a77990191a070ab1dea/FLAGd5e5b1c4e [2020-08-22 21:49:05,347 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 21:49:05,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-08-22 21:49:05,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b47c857/97a52a69cacd4a77990191a070ab1dea/FLAGd5e5b1c4e [2020-08-22 21:49:05,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b47c857/97a52a69cacd4a77990191a070ab1dea [2020-08-22 21:49:05,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 21:49:05,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 21:49:05,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 21:49:05,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 21:49:05,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 21:49:05,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:49:05" (1/1) ... [2020-08-22 21:49:05,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78be0286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:05, skipping insertion in model container [2020-08-22 21:49:05,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:49:05" (1/1) ... [2020-08-22 21:49:05,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 21:49:05,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 21:49:05,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:49:05,982 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 21:49:06,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:49:06,109 INFO L208 MainTranslator]: Completed translation [2020-08-22 21:49:06,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:06 WrapperNode [2020-08-22 21:49:06,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 21:49:06,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 21:49:06,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 21:49:06,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 21:49:06,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:06" (1/1) ... [2020-08-22 21:49:06,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:06" (1/1) ... [2020-08-22 21:49:06,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:06" (1/1) ... [2020-08-22 21:49:06,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:06" (1/1) ... [2020-08-22 21:49:06,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:06" (1/1) ... [2020-08-22 21:49:06,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:06" (1/1) ... [2020-08-22 21:49:06,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:06" (1/1) ... [2020-08-22 21:49:06,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 21:49:06,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 21:49:06,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 21:49:06,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 21:49:06,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:06" (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 21:49:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 21:49:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 21:49:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 21:49:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-08-22 21:49:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 21:49:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 21:49:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 21:49:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-08-22 21:49:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 21:49:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 21:49:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 21:49:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 21:49:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 21:49:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 21:49:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 21:49:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 21:49:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 21:49:06,602 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 21:49:06,602 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 21:49:06,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:49:06 BoogieIcfgContainer [2020-08-22 21:49:06,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 21:49:06,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 21:49:06,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 21:49:06,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 21:49:06,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:49:05" (1/3) ... [2020-08-22 21:49:06,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa65f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:49:06, skipping insertion in model container [2020-08-22 21:49:06,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:06" (2/3) ... [2020-08-22 21:49:06,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa65f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:49:06, skipping insertion in model container [2020-08-22 21:49:06,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:49:06" (3/3) ... [2020-08-22 21:49:06,615 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-08-22 21:49:06,625 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 21:49:06,632 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 21:49:06,645 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 21:49:06,665 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 21:49:06,665 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 21:49:06,666 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 21:49:06,666 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 21:49:06,666 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 21:49:06,666 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 21:49:06,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 21:49:06,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 21:49:06,685 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-08-22 21:49:06,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 21:49:06,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:49:06,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:49:06,698 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:49:06,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:49:06,704 INFO L82 PathProgramCache]: Analyzing trace with hash 69005663, now seen corresponding path program 1 times [2020-08-22 21:49:06,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:49:06,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792898074] [2020-08-22 21:49:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:49:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:06,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:49:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:06,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:49:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 21:49:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:06,966 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 21:49:06,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792898074] [2020-08-22 21:49:06,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:49:06,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 21:49:06,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131866310] [2020-08-22 21:49:06,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 21:49:06,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:49:06,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 21:49:06,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 21:49:06,992 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-08-22 21:49:07,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:49:07,245 INFO L93 Difference]: Finished difference Result 162 states and 186 transitions. [2020-08-22 21:49:07,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 21:49:07,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-08-22 21:49:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:49:07,259 INFO L225 Difference]: With dead ends: 162 [2020-08-22 21:49:07,260 INFO L226 Difference]: Without dead ends: 81 [2020-08-22 21:49:07,264 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 [2020-08-22 21:49:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-22 21:49:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-08-22 21:49:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-22 21:49:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-08-22 21:49:07,316 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 32 [2020-08-22 21:49:07,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:49:07,317 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-08-22 21:49:07,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 21:49:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-08-22 21:49:07,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 21:49:07,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:49:07,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:49:07,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 21:49:07,320 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:49:07,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:49:07,321 INFO L82 PathProgramCache]: Analyzing trace with hash -480977931, now seen corresponding path program 1 times [2020-08-22 21:49:07,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:49:07,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611575276] [2020-08-22 21:49:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:49:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:49:07,389 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:49:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:49:07,425 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:49:07,455 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 21:49:07,455 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 21:49:07,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 21:49:07,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 09:49:07 BoogieIcfgContainer [2020-08-22 21:49:07,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 21:49:07,495 INFO L168 Benchmark]: Toolchain (without parser) took 1753.98 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 104.6 MB in the beginning and 98.5 MB in the end (delta: 6.1 MB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:07,496 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 21:49:07,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.11 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 104.2 MB in the beginning and 181.4 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:07,498 INFO L168 Benchmark]: Boogie Preprocessor took 43.75 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 179.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:07,499 INFO L168 Benchmark]: RCFGBuilder took 453.17 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 155.7 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:07,500 INFO L168 Benchmark]: TraceAbstraction took 884.04 ms. Allocated memory is still 203.4 MB. Free memory was 155.0 MB in the beginning and 98.5 MB in the end (delta: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:07,505 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 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.11 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 104.2 MB in the beginning and 181.4 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.75 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 179.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 453.17 ms. Allocated memory is still 203.4 MB. Free memory was 179.4 MB in the beginning and 155.7 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 884.04 ms. Allocated memory is still 203.4 MB. Free memory was 155.0 MB in the beginning and 98.5 MB in the end (delta: 56.5 MB). Peak memory consumption was 56.5 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 someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 43, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L74] double x = 0.0 / 0.0; [L75] CALL, EXPR round_double(x) VAL [\old(x)=4294967299] [L18] __int32_t msw, exponent_less_1023; VAL [\old(x)=4294967299, x=4294967299] [L19] __uint32_t lsw; VAL [\old(x)=4294967299, x=4294967299] [L21] ieee_double_shape_type ew_u; VAL [\old(x)=4294967299, ew_u={2:0}, x=4294967299] [L22] ew_u.value = (x) VAL [\old(x)=4294967299, ew_u={2:0}, x=4294967299] [L23] EXPR ew_u.parts.msw VAL [\old(x)=4294967299, ew_u={2:0}, ew_u.parts.msw=4294967295, x=4294967299] [L23] (msw) = ew_u.parts.msw VAL [\old(x)=4294967299, ew_u={2:0}, ew_u.parts.msw=4294967295, msw=-1, x=4294967299] [L24] EXPR ew_u.parts.lsw VAL [\old(x)=4294967299, ew_u={2:0}, ew_u.parts.lsw=4294967304, msw=-1, x=4294967299] [L24] (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=4294967296, \old(x)=4294967299, ew_u={2:0}, ew_u.parts.lsw=4294967304, lsw=8, msw=-1, x=4294967299] [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967299, exponent_less_1023=1024, lsw=8, msw=-1, x=4294967299] [L27] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967299, exponent_less_1023=1024, lsw=8, msw=-1, x=4294967299] [L41] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967299, exponent_less_1023=1024, lsw=8, msw=-1, x=4294967299] [L42] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=4294967299, exponent_less_1023=1024, lsw=8, msw=-1, x=4294967299] [L43] return x + x; VAL [\old(x)=4294967299, exponent_less_1023=1024, lsw=8, msw=-1, x=4294967299] [L75] RET, EXPR round_double(x) VAL [round_double(x)=4294967297, x=4294967299] [L75] double res = round_double(x); VAL [res=4294967297, round_double(x)=4294967297, x=4294967299] [L78] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967297] [L15] return x != x; VAL [\old(x)=4294967297, \result=0, x=4294967297] [L78] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967297, x=4294967299] [L78] COND TRUE !isnan_double(res) VAL [isnan_double(res)=0, res=4294967297, x=4294967299] [L79] __VERIFIER_error() VAL [res=4294967297, x=4294967299] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 88 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: 92 SDtfs, 17 SDslu, 67 SDs, 0 SdLazy, 98 SolverSat, 6 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=88occurred 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, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1612 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...