/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:10:30,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:10:30,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:10:30,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:10:30,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:10:30,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:10:30,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:10:30,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:10:30,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:10:30,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:10:30,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:10:30,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:10:30,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:10:30,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:10:30,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:10:30,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:10:30,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:10:30,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:10:30,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:10:30,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:10:30,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:10:30,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:10:30,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:10:30,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:10:30,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:10:30,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:10:30,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:10:30,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:10:30,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:10:30,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:10:30,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:10:30,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:10:30,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:10:30,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:10:30,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:10:30,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:10:30,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:10:30,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:10:30,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:10:30,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:10:30,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:10:30,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:10:30,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:10:30,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:10:30,743 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:10:30,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:10:30,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:10:30,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:10:30,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:10:30,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:10:30,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:10:30,744 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:10:31,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:10:31,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:10:31,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:10:31,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:10:31,239 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:10:31,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2020-09-04 16:10:31,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a353c4f5/33f5731005ba417dbc86a54bdaf8ff89/FLAG77914a8c8 [2020-09-04 16:10:31,842 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:10:31,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2020-09-04 16:10:31,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a353c4f5/33f5731005ba417dbc86a54bdaf8ff89/FLAG77914a8c8 [2020-09-04 16:10:32,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a353c4f5/33f5731005ba417dbc86a54bdaf8ff89 [2020-09-04 16:10:32,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:10:32,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:10:32,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:32,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:10:32,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:10:32,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:32" (1/1) ... [2020-09-04 16:10:32,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177f3252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:32, skipping insertion in model container [2020-09-04 16:10:32,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:32" (1/1) ... [2020-09-04 16:10:32,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:10:32,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:10:32,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:32,497 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:10:32,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:32,559 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:10:32,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:32 WrapperNode [2020-09-04 16:10:32,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:32,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:10:32,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:10:32,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:10:32,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:32" (1/1) ... [2020-09-04 16:10:32,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:32" (1/1) ... [2020-09-04 16:10:32,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:32" (1/1) ... [2020-09-04 16:10:32,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:32" (1/1) ... [2020-09-04 16:10:32,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:32" (1/1) ... [2020-09-04 16:10:32,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:32" (1/1) ... [2020-09-04 16:10:32,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:32" (1/1) ... [2020-09-04 16:10:32,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:10:32,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:10:32,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:10:32,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:10:32,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:32" (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 [2020-09-04 16:10:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:10:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:10:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-04 16:10:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-09-04 16:10:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-04 16:10:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:10:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:10:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-04 16:10:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-09-04 16:10:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:10:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:10:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:10:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:10:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:10:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:10:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-04 16:10:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:10:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:10:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:10:33,254 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:10:33,255 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 16:10:33,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:33 BoogieIcfgContainer [2020-09-04 16:10:33,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:10:33,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:10:33,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:10:33,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:10:33,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:10:32" (1/3) ... [2020-09-04 16:10:33,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2437da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:33, skipping insertion in model container [2020-09-04 16:10:33,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:32" (2/3) ... [2020-09-04 16:10:33,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2437da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:33, skipping insertion in model container [2020-09-04 16:10:33,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:33" (3/3) ... [2020-09-04 16:10:33,270 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032a.c [2020-09-04 16:10:33,281 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:10:33,292 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:10:33,312 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:10:33,336 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:10:33,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:10:33,337 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:10:33,337 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:10:33,337 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:10:33,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:10:33,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:10:33,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:10:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2020-09-04 16:10:33,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 16:10:33,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:33,369 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] [2020-09-04 16:10:33,369 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:33,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:33,377 INFO L82 PathProgramCache]: Analyzing trace with hash -2016969319, now seen corresponding path program 1 times [2020-09-04 16:10:33,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:33,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212680021] [2020-09-04 16:10:33,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:33,461 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:33,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:10:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:33,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:10:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:10:33,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212680021] [2020-09-04 16:10:33,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:10:33,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:10:33,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9246485] [2020-09-04 16:10:33,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:10:33,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:10:33,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:10:33,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:10:33,665 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 4 states. [2020-09-04 16:10:33,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:10:33,997 INFO L93 Difference]: Finished difference Result 194 states and 225 transitions. [2020-09-04 16:10:33,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:10:33,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-04 16:10:34,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:10:34,014 INFO L225 Difference]: With dead ends: 194 [2020-09-04 16:10:34,014 INFO L226 Difference]: Without dead ends: 96 [2020-09-04 16:10:34,019 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 [2020-09-04 16:10:34,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-04 16:10:34,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-09-04 16:10:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-04 16:10:34,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-09-04 16:10:34,084 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 29 [2020-09-04 16:10:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:10:34,084 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-09-04 16:10:34,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:10:34,085 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-09-04 16:10:34,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 16:10:34,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:34,087 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] [2020-09-04 16:10:34,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:10:34,088 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:34,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:34,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1112139357, now seen corresponding path program 1 times [2020-09-04 16:10:34,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:34,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401915484] [2020-09-04 16:10:34,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:34,092 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:34,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:34,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:34,224 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:10:34,224 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:10:34,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:10:34,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:10:34 BoogieIcfgContainer [2020-09-04 16:10:34,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:10:34,255 INFO L168 Benchmark]: Toolchain (without parser) took 2050.55 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 93.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:34,256 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:10:34,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.74 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 90.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:34,258 INFO L168 Benchmark]: Boogie Preprocessor took 130.72 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 90.1 MB in the beginning and 180.2 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:34,260 INFO L168 Benchmark]: RCFGBuilder took 569.90 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 152.4 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:34,261 INFO L168 Benchmark]: TraceAbstraction took 986.99 ms. Allocated memory is still 202.9 MB. Free memory was 152.4 MB in the beginning and 93.2 MB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:34,267 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.74 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 90.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.72 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 90.1 MB in the beginning and 180.2 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 569.90 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 152.4 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 986.99 ms. Allocated memory is still 202.9 MB. Free memory was 152.4 MB in the beginning and 93.2 MB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 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 someBinaryDOUBLEComparisonOperation at line 90, overapproximation of bitwiseAnd at line 26, overapproximation of someBinaryArithmeticDOUBLEoperation at line 43. Possible FailurePath: [L86] double x = 0.0; [L87] 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 FALSE !(exponent_less_1023 < 20) [L41] COND TRUE exponent_less_1023 > 51 [L42] COND TRUE exponent_less_1023 == 1024 [L43] return x + x; [L87] RET, EXPR round_double(x) [L87] double res = round_double(x); [L90] EXPR res == 0.0 && __signbit_double(res) == 0 [L90] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 15 SDslu, 82 SDs, 0 SdLazy, 120 SolverSat, 6 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=104occurred 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: No data available, 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...