/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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:02:09,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:02:09,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:02:09,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:02:09,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:02:09,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:02:09,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:02:09,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:02:09,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:02:09,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:02:09,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:02:09,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:02:09,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:02:09,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:02:09,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:02:09,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:02:09,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:02:09,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:02:09,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:02:09,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:02:09,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:02:09,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:02:09,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:02:09,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:02:09,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:02:09,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:02:09,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:02:09,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:02:09,388 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 13:02:09,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:02:09,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:02:09,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:02:09,399 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:02:09,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:02:09,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:02:09,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:02:09,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:02:09,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:02:09,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:02:09,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:02:09,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:02:09,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:02:09,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:02:09,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:02:09,401 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:02:09,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:02:09,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:02:09,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:02:09,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:02:09,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:02:09,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:02:09,402 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:02:09,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:02:09,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:02:09,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:02:09,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:02:09,715 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:02:09,716 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092a.c [2020-07-07 13:02:09,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e775bee/b3d2381ef7d443ffa672a80e061e65a7/FLAG97e9dc186 [2020-07-07 13:02:10,275 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:02:10,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092a.c [2020-07-07 13:02:10,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e775bee/b3d2381ef7d443ffa672a80e061e65a7/FLAG97e9dc186 [2020-07-07 13:02:10,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e775bee/b3d2381ef7d443ffa672a80e061e65a7 [2020-07-07 13:02:10,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:02:10,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:02:10,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:02:10,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:02:10,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:02:10,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:02:10" (1/1) ... [2020-07-07 13:02:10,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c3269e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:10, skipping insertion in model container [2020-07-07 13:02:10,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:02:10" (1/1) ... [2020-07-07 13:02:10,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:02:10,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:02:10,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:02:10,877 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:02:10,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:02:11,013 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:02:11,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:11 WrapperNode [2020-07-07 13:02:11,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:02:11,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:02:11,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:02:11,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:02:11,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:11" (1/1) ... [2020-07-07 13:02:11,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:11" (1/1) ... [2020-07-07 13:02:11,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:11" (1/1) ... [2020-07-07 13:02:11,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:11" (1/1) ... [2020-07-07 13:02:11,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:11" (1/1) ... [2020-07-07 13:02:11,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:11" (1/1) ... [2020-07-07 13:02:11,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:11" (1/1) ... [2020-07-07 13:02:11,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:02:11,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:02:11,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:02:11,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:02:11,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:11" (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 13:02:11,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:02:11,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:02:11,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-07-07 13:02:11,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-07 13:02:11,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:02:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:02:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-07-07 13:02:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:02:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 13:02:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:02:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:02:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:02:11,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 13:02:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-07 13:02:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:02:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:02:11,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:02:11,550 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:02:11,551 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-07 13:02:11,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:02:11 BoogieIcfgContainer [2020-07-07 13:02:11,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:02:11,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:02:11,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:02:11,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:02:11,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:02:10" (1/3) ... [2020-07-07 13:02:11,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f032118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:02:11, skipping insertion in model container [2020-07-07 13:02:11,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:11" (2/3) ... [2020-07-07 13:02:11,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f032118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:02:11, skipping insertion in model container [2020-07-07 13:02:11,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:02:11" (3/3) ... [2020-07-07 13:02:11,564 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a.c [2020-07-07 13:02:11,574 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:02:11,581 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:02:11,594 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:02:11,611 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:02:11,612 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:02:11,612 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:02:11,612 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:02:11,612 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:02:11,612 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:02:11,612 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:02:11,613 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:02:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-07-07 13:02:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 13:02:11,638 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:02:11,639 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] [2020-07-07 13:02:11,640 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:02:11,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:02:11,646 INFO L82 PathProgramCache]: Analyzing trace with hash 818160258, now seen corresponding path program 1 times [2020-07-07 13:02:11,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:02:11,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580310288] [2020-07-07 13:02:11,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:02:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:11,893 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 13:02:11,894 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:02:11,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580310288] [2020-07-07 13:02:11,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:02:11,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:02:11,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315749982] [2020-07-07 13:02:11,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:02:11,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:02:11,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:02:11,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:02:11,922 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 4 states. [2020-07-07 13:02:12,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:02:12,185 INFO L93 Difference]: Finished difference Result 168 states and 201 transitions. [2020-07-07 13:02:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:02:12,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-07-07 13:02:12,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:02:12,199 INFO L225 Difference]: With dead ends: 168 [2020-07-07 13:02:12,199 INFO L226 Difference]: Without dead ends: 84 [2020-07-07 13:02:12,204 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 [2020-07-07 13:02:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-07-07 13:02:12,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-07-07 13:02:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-07 13:02:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-07-07 13:02:12,266 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 31 [2020-07-07 13:02:12,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:02:12,267 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-07-07 13:02:12,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:02:12,268 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-07-07 13:02:12,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 13:02:12,270 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:02:12,270 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] [2020-07-07 13:02:12,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:02:12,271 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:02:12,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:02:12,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1168745686, now seen corresponding path program 1 times [2020-07-07 13:02:12,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:02:12,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143779261] [2020-07-07 13:02:12,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:02:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:02:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:02:12,467 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:02:12,467 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:02:12,467 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:02:12,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:02:12,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:02:12 BoogieIcfgContainer [2020-07-07 13:02:12,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:02:12,515 INFO L168 Benchmark]: Toolchain (without parser) took 1872.89 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 89.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 75.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:12,516 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 135.3 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 13:02:12,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.76 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 177.8 MB in the end (delta: -77.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:12,520 INFO L168 Benchmark]: Boogie Preprocessor took 44.98 ms. Allocated memory is still 199.2 MB. Free memory was 177.8 MB in the beginning and 175.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:12,522 INFO L168 Benchmark]: RCFGBuilder took 495.53 ms. Allocated memory is still 199.2 MB. Free memory was 175.3 MB in the beginning and 150.7 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:12,523 INFO L168 Benchmark]: TraceAbstraction took 955.65 ms. Allocated memory is still 199.2 MB. Free memory was 150.7 MB in the beginning and 89.0 MB in the end (delta: 61.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:12,532 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 135.3 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 371.76 ms. Allocated memory was 135.3 MB in the beginning and 199.2 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 177.8 MB in the end (delta: -77.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.98 ms. Allocated memory is still 199.2 MB. Free memory was 177.8 MB in the beginning and 175.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 495.53 ms. Allocated memory is still 199.2 MB. Free memory was 175.3 MB in the beginning and 150.7 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 955.65 ms. Allocated memory is still 199.2 MB. Free memory was 150.7 MB in the beginning and 89.0 MB in the end (delta: 61.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of bitwiseAnd at line 21, overapproximation of someUnaryFLOAToperation at line 76, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; [L76] float x = -0.0f; [L77] CALL, EXPR ceil_float(x) [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f [L23] COND FALSE !(j0 < 23) [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; [L77] RET, EXPR ceil_float(x) [L77] float res = ceil_float(x); [L80] EXPR res == -0.0f && __signbit_float(res) == 1 [L80] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L81] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 92 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: 97 SDtfs, 17 SDslu, 73 SDs, 0 SdLazy, 105 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred 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...