/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 0.1.25-72570d3 [2020-08-22 18:32:31,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:32:31,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:32:31,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 18:32:31,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:32:31,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:32:31,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:32:31,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:32:31,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:32:31,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:32:31,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:32:31,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:32:31,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:32:31,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:32:31,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:32:31,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:32:31,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:32:31,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:32:31,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:32:31,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:32:31,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:32:31,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:32:31,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:32:31,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:32:31,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:32:31,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:32:31,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:32:31,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:32:31,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:32:31,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:32:31,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:32:31,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:32:31,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:32:31,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:32:31,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:32:31,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:32:31,343 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:32:31,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:32:31,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:32:31,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:32:31,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:32:31,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:32:31,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:32:31,344 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:32:31,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:32:31,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:32:31,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:32:31,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:32:31,638 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:32:31,638 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-22 18:32:31,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1581a955/fd78534f553a4228b11b3d964c7e1908/FLAGc03a98ce7 [2020-08-22 18:32:32,182 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:32:32,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-22 18:32:32,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1581a955/fd78534f553a4228b11b3d964c7e1908/FLAGc03a98ce7 [2020-08-22 18:32:32,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1581a955/fd78534f553a4228b11b3d964c7e1908 [2020-08-22 18:32:32,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:32:32,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:32:32,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:32:32,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:32:32,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:32:32,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5878563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32, skipping insertion in model container [2020-08-22 18:32:32,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:32:32,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:32:32,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:32:32,794 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:32:32,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:32:32,949 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:32:32,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32 WrapperNode [2020-08-22 18:32:32,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:32:32,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:32:32,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:32:32,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:32:32,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:33,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:33,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:32:33,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:32:33,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:32:33,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:32:33,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (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 [2020-08-22 18:32:33,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:32:33,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:32:33,072 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-22 18:32:33,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 18:32:33,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:32:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:32:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 18:32:33,072 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-22 18:32:33,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:32:33,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:32:33,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:32:33,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:32:33,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:32:33,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:32:33,073 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 18:32:33,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:32:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:32:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 18:32:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:32:33,617 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:32:33,617 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-22 18:32:33,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:32:33 BoogieIcfgContainer [2020-08-22 18:32:33,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:32:33,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:32:33,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:32:33,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:32:33,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:32:32" (1/3) ... [2020-08-22 18:32:33,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb2f8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:32:33, skipping insertion in model container [2020-08-22 18:32:33,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (2/3) ... [2020-08-22 18:32:33,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb2f8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:32:33, skipping insertion in model container [2020-08-22 18:32:33,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:32:33" (3/3) ... [2020-08-22 18:32:33,632 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-22 18:32:33,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:32:33,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:32:33,671 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:32:33,699 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:32:33,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:32:33,699 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:32:33,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:32:33,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:32:33,700 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:32:33,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:32:33,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:32:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-22 18:32:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-22 18:32:33,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:32:33,733 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] [2020-08-22 18:32:33,733 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:32:33,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:32:33,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505082, now seen corresponding path program 1 times [2020-08-22 18:32:33,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:32:33,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869963853] [2020-08-22 18:32:33,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:32:33,804 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:32:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:33,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:32:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 18:32:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:32:34,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869963853] [2020-08-22 18:32:34,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:32:34,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:32:34,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926840603] [2020-08-22 18:32:34,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:32:34,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:32:34,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:32:34,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:32:34,083 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-08-22 18:32:34,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:32:34,540 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2020-08-22 18:32:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:32:34,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-08-22 18:32:34,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:32:34,556 INFO L225 Difference]: With dead ends: 308 [2020-08-22 18:32:34,556 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 18:32:34,561 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 [2020-08-22 18:32:34,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 18:32:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-08-22 18:32:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-22 18:32:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2020-08-22 18:32:34,622 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 43 [2020-08-22 18:32:34,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:32:34,622 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2020-08-22 18:32:34,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:32:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2020-08-22 18:32:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 18:32:34,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:32:34,626 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] [2020-08-22 18:32:34,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:32:34,626 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:32:34,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:32:34,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1298136515, now seen corresponding path program 1 times [2020-08-22 18:32:34,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:32:34,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018208180] [2020-08-22 18:32:34,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:32:34,630 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:32:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:32:34,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:32:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:32:34,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:32:34,834 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:32:34,834 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:32:34,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:32:34,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:32:34 BoogieIcfgContainer [2020-08-22 18:32:34,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:32:34,858 INFO L168 Benchmark]: Toolchain (without parser) took 2313.62 ms. Allocated memory was 141.0 MB in the beginning and 233.3 MB in the end (delta: 92.3 MB). Free memory was 104.0 MB in the beginning and 162.5 MB in the end (delta: -58.5 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,859 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 141.0 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.55 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.8 MB in the beginning and 181.8 MB in the end (delta: -78.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,860 INFO L168 Benchmark]: Boogie Preprocessor took 58.89 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 179.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,861 INFO L168 Benchmark]: RCFGBuilder took 613.86 ms. Allocated memory is still 204.5 MB. Free memory was 179.3 MB in the beginning and 142.5 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,862 INFO L168 Benchmark]: TraceAbstraction took 1229.57 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 141.9 MB in the beginning and 162.5 MB in the end (delta: -20.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,866 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 141.0 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 406.55 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.8 MB in the beginning and 181.8 MB in the end (delta: -78.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.89 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 179.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 613.86 ms. Allocated memory is still 204.5 MB. Free memory was 179.3 MB in the beginning and 142.5 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1229.57 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 141.9 MB in the beginning and 162.5 MB in the end (delta: -20.6 MB). Peak memory consumption was 8.2 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: 0.4s, 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, 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...