/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/float_req_bl_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:02:02,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:02:02,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:02:02,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:02:02,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:02:02,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:02:02,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:02:02,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:02:02,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:02:02,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:02:02,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:02:02,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:02:02,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:02:02,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:02:02,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:02:02,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:02:02,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:02:02,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:02:02,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:02:02,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:02:02,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:02:02,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:02:02,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:02:02,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:02:02,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:02:02,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:02:02,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:02:02,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:02:02,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:02:02,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:02:02,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:02:02,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:02:02,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:02:02,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:02:02,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:02:02,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:02:02,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:02:02,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:02:02,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:02:02,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:02:02,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:02:02,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:02:02,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:02:02,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:02:02,557 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:02:02,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:02:02,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:02:02,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:02:02,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:02:02,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:02:02,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:02:02,558 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:02:02,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:02:02,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:02:02,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:02:02,837 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:02:02,838 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:02:02,838 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1071.c [2020-07-07 13:02:02,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61750589e/b444ac06c9e041ef936e06fd17b53e93/FLAGd7571221a [2020-07-07 13:02:03,336 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:02:03,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1071.c [2020-07-07 13:02:03,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61750589e/b444ac06c9e041ef936e06fd17b53e93/FLAGd7571221a [2020-07-07 13:02:03,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61750589e/b444ac06c9e041ef936e06fd17b53e93 [2020-07-07 13:02:03,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:02:03,714 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:02:03,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:02:03,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:02:03,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:02:03,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:02:03" (1/1) ... [2020-07-07 13:02:03,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ef5443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:03, skipping insertion in model container [2020-07-07 13:02:03,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:02:03" (1/1) ... [2020-07-07 13:02:03,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:02:03,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:02:03,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:02:03,967 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:02:03,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:02:04,012 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:02:04,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:04 WrapperNode [2020-07-07 13:02:04,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:02:04,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:02:04,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:02:04,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:02:04,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:04" (1/1) ... [2020-07-07 13:02:04,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:04" (1/1) ... [2020-07-07 13:02:04,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:04" (1/1) ... [2020-07-07 13:02:04,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:04" (1/1) ... [2020-07-07 13:02:04,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:04" (1/1) ... [2020-07-07 13:02:04,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:04" (1/1) ... [2020-07-07 13:02:04,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:04" (1/1) ... [2020-07-07 13:02:04,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:02:04,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:02:04,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:02:04,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:02:04,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:04" (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 [2020-07-07 13:02:04,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:02:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:02:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-07-07 13:02:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-07 13:02:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:02:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:02:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-07-07 13:02:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:02:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 13:02:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 13:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-07 13:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:02:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:02:04,518 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:02:04,518 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-07 13:02:04,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:02:04 BoogieIcfgContainer [2020-07-07 13:02:04,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:02:04,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:02:04,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:02:04,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:02:04,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:02:03" (1/3) ... [2020-07-07 13:02:04,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599be8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:02:04, skipping insertion in model container [2020-07-07 13:02:04,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:04" (2/3) ... [2020-07-07 13:02:04,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599be8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:02:04, skipping insertion in model container [2020-07-07 13:02:04,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:02:04" (3/3) ... [2020-07-07 13:02:04,531 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-07-07 13:02:04,541 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:02:04,548 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:02:04,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:02:04,584 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:02:04,584 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:02:04,585 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:02:04,585 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:02:04,585 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:02:04,585 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:02:04,585 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:02:04,585 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:02:04,602 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-07-07 13:02:04,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-07 13:02:04,613 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:02:04,614 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] [2020-07-07 13:02:04,615 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:02:04,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:02:04,626 INFO L82 PathProgramCache]: Analyzing trace with hash 641961910, now seen corresponding path program 1 times [2020-07-07 13:02:04,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:02:04,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571729182] [2020-07-07 13:02:04,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:02:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:02:04,875 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:02:04,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571729182] [2020-07-07 13:02:04,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:02:04,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:02:04,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388648167] [2020-07-07 13:02:04,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:02:04,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:02:04,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:02:04,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:02:04,900 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 4 states. [2020-07-07 13:02:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:02:05,116 INFO L93 Difference]: Finished difference Result 128 states and 146 transitions. [2020-07-07 13:02:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:02:05,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-07-07 13:02:05,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:02:05,129 INFO L225 Difference]: With dead ends: 128 [2020-07-07 13:02:05,129 INFO L226 Difference]: Without dead ends: 64 [2020-07-07 13:02:05,133 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 [2020-07-07 13:02:05,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-07 13:02:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-07-07 13:02:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-07 13:02:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-07-07 13:02:05,182 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 32 [2020-07-07 13:02:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:02:05,183 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-07-07 13:02:05,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:02:05,183 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-07-07 13:02:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 13:02:05,185 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:02:05,185 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] [2020-07-07 13:02:05,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:02:05,186 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:02:05,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:02:05,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1381088133, now seen corresponding path program 1 times [2020-07-07 13:02:05,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:02:05,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510843111] [2020-07-07 13:02:05,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:02:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:02:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:02:05,399 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:02:05,400 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:02:05,400 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:02:05,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:02:05,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:02:05 BoogieIcfgContainer [2020-07-07 13:02:05,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:02:05,423 INFO L168 Benchmark]: Toolchain (without parser) took 1708.32 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 104.5 MB in the beginning and 106.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:05,424 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:02:05,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.84 ms. Allocated memory is still 146.3 MB. Free memory was 104.3 MB in the beginning and 93.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:05,426 INFO L168 Benchmark]: Boogie Preprocessor took 131.17 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 93.5 MB in the beginning and 181.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:05,427 INFO L168 Benchmark]: RCFGBuilder took 378.75 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 160.1 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:05,428 INFO L168 Benchmark]: TraceAbstraction took 896.00 ms. Allocated memory is still 203.9 MB. Free memory was 159.4 MB in the beginning and 106.6 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:05,432 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 146.3 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 297.84 ms. Allocated memory is still 146.3 MB. Free memory was 104.3 MB in the beginning and 93.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.17 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 93.5 MB in the beginning and 181.3 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 378.75 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 160.1 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 896.00 ms. Allocated memory is still 203.9 MB. Free memory was 159.4 MB in the beginning and 106.6 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 57]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 38, overapproximation of bitwiseAnd at line 20. Possible FailurePath: [L52] float x = 0.0f / 0.0f; [L53] CALL, EXPR trunc_float(x) [L13] __int32_t signbit, w, exponent_less_127; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L21] COND FALSE !(exponent_less_127 < 23) [L37] COND TRUE exponent_less_127 == 255 [L38] return x + x; [L53] RET, EXPR trunc_float(x) [L53] float res = trunc_float(x); [L56] CALL, EXPR isnan_float(res) [L44] return x != x; [L56] RET, EXPR isnan_float(res) [L56] COND TRUE !isnan_float(res) [L57] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 17 SDslu, 44 SDs, 0 SdLazy, 77 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=71occurred 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...