/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 0.1.25-3af5e1f [2020-09-04 16:11:28,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:11:28,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:11:28,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:11:28,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:11:28,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:11:28,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:11:28,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:11:28,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:11:28,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:11:28,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:11:28,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:11:28,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:11:28,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:11:28,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:11:28,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:11:28,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:11:28,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:11:28,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:11:28,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:11:28,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:11:28,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:11:28,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:11:28,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:11:28,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:11:28,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:11:28,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:11:28,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:11:28,378 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 16:11:28,390 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:11:28,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:11:28,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:11:28,392 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:11:28,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:11:28,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:11:28,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:11:28,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:11:28,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:11:28,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:11:28,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:11:28,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:11:28,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:11:28,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:11:28,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:11:28,394 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:11:28,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:11:28,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:11:28,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:11:28,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:11:28,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:11:28,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:11:28,396 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:11:28,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:11:28,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:11:28,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:11:28,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:11:28,820 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:11:28,822 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-04 16:11:28,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60d66c6d2/6fe271b6a21f483bb28e4d313b9f0a89/FLAG365a3e396 [2020-09-04 16:11:29,451 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:11:29,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-04 16:11:29,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60d66c6d2/6fe271b6a21f483bb28e4d313b9f0a89/FLAG365a3e396 [2020-09-04 16:11:29,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60d66c6d2/6fe271b6a21f483bb28e4d313b9f0a89 [2020-09-04 16:11:29,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:11:29,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:11:29,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:29,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:11:29,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:11:29,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:29" (1/1) ... [2020-09-04 16:11:29,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c489c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:29, skipping insertion in model container [2020-09-04 16:11:29,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:29" (1/1) ... [2020-09-04 16:11:29,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:11:29,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:11:30,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:30,295 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:11:30,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:30,494 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:11:30,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:30 WrapperNode [2020-09-04 16:11:30,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:30,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:11:30,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:11:30,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:11:30,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:30" (1/1) ... [2020-09-04 16:11:30,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:30" (1/1) ... [2020-09-04 16:11:30,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:30" (1/1) ... [2020-09-04 16:11:30,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:30" (1/1) ... [2020-09-04 16:11:30,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:30" (1/1) ... [2020-09-04 16:11:30,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:30" (1/1) ... [2020-09-04 16:11:30,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:30" (1/1) ... [2020-09-04 16:11:30,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:11:30,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:11:30,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:11:30,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:11:30,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:30" (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 16:11:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:11:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:11:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-04 16:11:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-04 16:11:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:11:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:11:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-04 16:11:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-04 16:11:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:11:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:11:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:11:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:11:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:11:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:11:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-04 16:11:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:11:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:11:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-04 16:11:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:11:31,197 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:11:31,198 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-04 16:11:31,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:31 BoogieIcfgContainer [2020-09-04 16:11:31,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:11:31,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:11:31,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:11:31,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:11:31,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:11:29" (1/3) ... [2020-09-04 16:11:31,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b84ff1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:31, skipping insertion in model container [2020-09-04 16:11:31,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:30" (2/3) ... [2020-09-04 16:11:31,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b84ff1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:31, skipping insertion in model container [2020-09-04 16:11:31,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:31" (3/3) ... [2020-09-04 16:11:31,215 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-09-04 16:11:31,226 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:11:31,237 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:11:31,255 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:11:31,277 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:11:31,278 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:11:31,278 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:11:31,278 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:11:31,278 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:11:31,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:11:31,278 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:11:31,278 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:11:31,302 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-09-04 16:11:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 16:11:31,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:31,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:11:31,320 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:31,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:31,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505082, now seen corresponding path program 1 times [2020-09-04 16:11:31,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:31,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727991153] [2020-09-04 16:11:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:31,417 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:11:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:31,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 16:11:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:31,657 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 16:11:31,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727991153] [2020-09-04 16:11:31,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:11:31,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:11:31,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735953302] [2020-09-04 16:11:31,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:11:31,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:11:31,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:11:31,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:11:31,689 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-09-04 16:11:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:11:32,171 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2020-09-04 16:11:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:11:32,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-04 16:11:32,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:11:32,189 INFO L225 Difference]: With dead ends: 308 [2020-09-04 16:11:32,189 INFO L226 Difference]: Without dead ends: 158 [2020-09-04 16:11:32,194 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 16:11:32,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-04 16:11:32,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-04 16:11:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-04 16:11:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2020-09-04 16:11:32,260 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 43 [2020-09-04 16:11:32,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:11:32,260 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2020-09-04 16:11:32,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:11:32,261 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2020-09-04 16:11:32,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-04 16:11:32,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:32,264 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] [2020-09-04 16:11:32,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:11:32,264 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:32,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:32,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1298136515, now seen corresponding path program 1 times [2020-09-04 16:11:32,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:32,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103698760] [2020-09-04 16:11:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:32,269 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:32,343 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:32,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:32,436 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:11:32,436 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:11:32,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:11:32,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:11:32 BoogieIcfgContainer [2020-09-04 16:11:32,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:11:32,467 INFO L168 Benchmark]: Toolchain (without parser) took 2629.47 ms. Allocated memory was 141.0 MB in the beginning and 235.9 MB in the end (delta: 94.9 MB). Free memory was 102.4 MB in the beginning and 166.0 MB in the end (delta: -63.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:32,468 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 141.0 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:11:32,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.69 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 102.0 MB in the beginning and 179.6 MB in the end (delta: -77.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:32,470 INFO L168 Benchmark]: Boogie Preprocessor took 60.33 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 177.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:32,471 INFO L168 Benchmark]: RCFGBuilder took 649.14 ms. Allocated memory is still 203.4 MB. Free memory was 177.0 MB in the beginning and 140.4 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:32,472 INFO L168 Benchmark]: TraceAbstraction took 1256.29 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 139.8 MB in the beginning and 166.0 MB in the end (delta: -26.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:32,476 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 141.0 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.69 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 102.0 MB in the beginning and 179.6 MB in the end (delta: -77.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.33 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 177.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 649.14 ms. Allocated memory is still 203.4 MB. Free memory was 177.0 MB in the beginning and 140.4 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1256.29 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 139.8 MB in the beginning and 166.0 MB in the end (delta: -26.2 MB). Peak memory consumption was 6.3 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: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, 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, 9 GetRequests, 6 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...