/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:14:11,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:14:11,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:14:11,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:14:11,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:14:11,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:14:11,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:14:11,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:14:11,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:14:11,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:14:11,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:14:11,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:14:11,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:14:11,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:14:11,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:14:11,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:14:11,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:14:11,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:14:11,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:14:11,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:14:11,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:14:11,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:14:11,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:14:11,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:14:11,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:14:11,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:14:11,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:14:11,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:14:11,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:14:11,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-17 13:14:11,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:14:11,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:14:11,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:14:11,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:14:11,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:14:11,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:14:11,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:14:11,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:14:11,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:14:11,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:14:11,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:14:11,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:14:11,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:14:11,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:14:11,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:14:11,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:14:11,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:14:11,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:14:11,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:14:11,635 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:14:11,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:14:11,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:14:11,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:14:11,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:14:11,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:14:11,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:14:11,636 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:14:11,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:14:11,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:14:11,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:14:11,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:14:11,918 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:14:11,919 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-17 13:14:11,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97e3ab0a4/d70a8c3070ef4543adbaef5dfdf0fb6d/FLAG12bbbb308 [2020-07-17 13:14:12,443 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:14:12,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-17 13:14:12,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97e3ab0a4/d70a8c3070ef4543adbaef5dfdf0fb6d/FLAG12bbbb308 [2020-07-17 13:14:12,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97e3ab0a4/d70a8c3070ef4543adbaef5dfdf0fb6d [2020-07-17 13:14:12,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:14:12,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:14:12,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:12,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:14:12,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:14:12,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:12" (1/1) ... [2020-07-17 13:14:12,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6771fc52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:12, skipping insertion in model container [2020-07-17 13:14:12,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:12" (1/1) ... [2020-07-17 13:14:12,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:14:12,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:14:13,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:13,105 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:14:13,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:13,258 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:14:13,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13 WrapperNode [2020-07-17 13:14:13,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:13,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:14:13,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:14:13,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:14:13,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:14:13,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:14:13,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:14:13,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:14:13,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (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 [2020-07-17 13:14:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:14:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:14:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-17 13:14:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-17 13:14:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:14:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:14:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-17 13:14:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-17 13:14:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 13:14:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 13:14:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:14:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:14:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 13:14:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:14:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-17 13:14:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:14:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:14:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-17 13:14:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:14:13,965 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:14:13,965 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-17 13:14:13,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:13 BoogieIcfgContainer [2020-07-17 13:14:13,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:14:13,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:14:13,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:14:13,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:14:13,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:14:12" (1/3) ... [2020-07-17 13:14:13,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9379220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:13, skipping insertion in model container [2020-07-17 13:14:13,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (2/3) ... [2020-07-17 13:14:13,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9379220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:13, skipping insertion in model container [2020-07-17 13:14:13,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:13" (3/3) ... [2020-07-17 13:14:13,980 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-07-17 13:14:13,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:14:13,998 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:14:14,011 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:14:14,029 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:14:14,029 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:14:14,029 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:14:14,029 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:14:14,030 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:14:14,030 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:14:14,030 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:14:14,030 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:14:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-07-17 13:14:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-17 13:14:14,059 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:14,060 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] [2020-07-17 13:14:14,061 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:14,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:14,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505082, now seen corresponding path program 1 times [2020-07-17 13:14:14,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:14,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364043513] [2020-07-17 13:14:14,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:14:14,316 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:14,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364043513] [2020-07-17 13:14:14,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:14,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:14:14,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248523760] [2020-07-17 13:14:14,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:14:14,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:14,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:14:14,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:14:14,338 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-07-17 13:14:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:14,780 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2020-07-17 13:14:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 13:14:14,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-07-17 13:14:14,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:14,795 INFO L225 Difference]: With dead ends: 308 [2020-07-17 13:14:14,795 INFO L226 Difference]: Without dead ends: 158 [2020-07-17 13:14:14,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:14:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-17 13:14:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-07-17 13:14:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-17 13:14:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2020-07-17 13:14:14,859 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 43 [2020-07-17 13:14:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:14,860 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2020-07-17 13:14:14,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:14:14,860 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2020-07-17 13:14:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-17 13:14:14,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:14,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:14,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:14:14,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:14,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1298136515, now seen corresponding path program 1 times [2020-07-17 13:14:14,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:14,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957190928] [2020-07-17 13:14:14,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:14:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:14:15,087 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:15,087 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 13:14:15,087 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 13:14:15,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:14:15,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:14:15 BoogieIcfgContainer [2020-07-17 13:14:15,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:14:15,114 INFO L168 Benchmark]: Toolchain (without parser) took 2256.74 ms. Allocated memory was 137.4 MB in the beginning and 232.8 MB in the end (delta: 95.4 MB). Free memory was 102.7 MB in the beginning and 165.9 MB in the end (delta: -63.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,116 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.64 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 178.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,119 INFO L168 Benchmark]: Boogie Preprocessor took 51.51 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 175.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,120 INFO L168 Benchmark]: RCFGBuilder took 660.66 ms. Allocated memory is still 201.9 MB. Free memory was 175.4 MB in the beginning and 138.7 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,122 INFO L168 Benchmark]: TraceAbstraction took 1138.05 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 138.7 MB in the beginning and 165.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,130 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 400.64 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 178.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.51 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 175.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 660.66 ms. Allocated memory is still 201.9 MB. Free memory was 175.4 MB in the beginning and 138.7 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1138.05 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 138.7 MB in the beginning and 165.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 179 SDtfs, 39 SDslu, 129 SDs, 0 SdLazy, 195 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred 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...