/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/double_req_bl_1072d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:31:20,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:31:20,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:31:20,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 18:31:20,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:31:20,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:31:20,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:31:20,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:31:20,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:31:20,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:31:20,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:31:20,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:31:20,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:31:20,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:31:20,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:31:20,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:31:20,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:31:20,950 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 18:31:20,971 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:31:20,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:31:20,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:31:20,977 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:31:20,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:31:20,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:31:20,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:31:20,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:31:20,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:31:20,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:31:20,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:31:20,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:31:20,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:31:20,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:31:20,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:31:20,981 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:31:20,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:31:20,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:31:20,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:31:20,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:31:20,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:31:20,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:31:20,982 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:31:21,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:31:21,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:31:21,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:31:21,302 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:31:21,302 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:31:21,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-08-22 18:31:21,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b7cd7d4/57dc45617d1a454f8d0fdd176c54c48c/FLAG9f6b2e037 [2020-08-22 18:31:21,856 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:31:21,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-08-22 18:31:21,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b7cd7d4/57dc45617d1a454f8d0fdd176c54c48c/FLAG9f6b2e037 [2020-08-22 18:31:22,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b7cd7d4/57dc45617d1a454f8d0fdd176c54c48c [2020-08-22 18:31:22,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:31:22,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:31:22,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:22,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:31:22,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:31:22,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:22" (1/1) ... [2020-08-22 18:31:22,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412ead50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:22, skipping insertion in model container [2020-08-22 18:31:22,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:22" (1/1) ... [2020-08-22 18:31:22,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:31:22,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:31:22,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:22,432 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:31:22,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:22,565 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:31:22,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:22 WrapperNode [2020-08-22 18:31:22,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:22,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:31:22,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:31:22,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:31:22,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:22" (1/1) ... [2020-08-22 18:31:22,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:22" (1/1) ... [2020-08-22 18:31:22,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:22" (1/1) ... [2020-08-22 18:31:22,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:22" (1/1) ... [2020-08-22 18:31:22,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:22" (1/1) ... [2020-08-22 18:31:22,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:22" (1/1) ... [2020-08-22 18:31:22,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:22" (1/1) ... [2020-08-22 18:31:22,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:31:22,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:31:22,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:31:22,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:31:22,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:22" (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 18:31:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:31:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:31:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 18:31:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-08-22 18:31:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-08-22 18:31:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:31:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:31:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 18:31:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-08-22 18:31:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:31:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:31:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:31:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:31:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:31:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:31:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-08-22 18:31:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:31:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:31:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:31:23,102 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:31:23,103 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-08-22 18:31:23,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:23 BoogieIcfgContainer [2020-08-22 18:31:23,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:31:23,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:31:23,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:31:23,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:31:23,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:31:22" (1/3) ... [2020-08-22 18:31:23,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e003966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:23, skipping insertion in model container [2020-08-22 18:31:23,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:22" (2/3) ... [2020-08-22 18:31:23,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e003966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:31:23, skipping insertion in model container [2020-08-22 18:31:23,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:31:23" (3/3) ... [2020-08-22 18:31:23,116 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-08-22 18:31:23,126 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:31:23,134 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:31:23,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:31:23,165 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:31:23,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:31:23,165 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:31:23,166 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:31:23,166 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:31:23,166 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:31:23,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:31:23,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:31:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-08-22 18:31:23,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 18:31:23,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:23,195 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] [2020-08-22 18:31:23,196 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:23,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1396348261, now seen corresponding path program 1 times [2020-08-22 18:31:23,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:23,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298277749] [2020-08-22 18:31:23,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:23,258 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:31:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:23,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 18:31:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:23,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 18:31:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:31:23,446 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 18:31:23,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298277749] [2020-08-22 18:31:23,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:31:23,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:31:23,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714921933] [2020-08-22 18:31:23,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:31:23,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:31:23,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:31:23,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:31:23,478 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2020-08-22 18:31:23,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:31:23,787 INFO L93 Difference]: Finished difference Result 213 states and 242 transitions. [2020-08-22 18:31:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:31:23,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-08-22 18:31:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:31:23,802 INFO L225 Difference]: With dead ends: 213 [2020-08-22 18:31:23,802 INFO L226 Difference]: Without dead ends: 107 [2020-08-22 18:31:23,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 18:31:23,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-08-22 18:31:23,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-08-22 18:31:23,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-22 18:31:23,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2020-08-22 18:31:23,863 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 40 [2020-08-22 18:31:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:31:23,863 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2020-08-22 18:31:23,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:31:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2020-08-22 18:31:23,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-22 18:31:23,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:31:23,867 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:31:23,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:31:23,868 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:31:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:31:23,869 INFO L82 PathProgramCache]: Analyzing trace with hash -247930506, now seen corresponding path program 1 times [2020-08-22 18:31:23,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:31:23,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574519151] [2020-08-22 18:31:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:31:23,872 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:31:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:24,055 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:31:24,133 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:31:24,173 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:31:24,173 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:31:24,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:31:24,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:31:24 BoogieIcfgContainer [2020-08-22 18:31:24,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:31:24,198 INFO L168 Benchmark]: Toolchain (without parser) took 1991.62 ms. Allocated memory was 137.9 MB in the beginning and 231.7 MB in the end (delta: 93.8 MB). Free memory was 101.8 MB in the beginning and 189.1 MB in the end (delta: -87.3 MB). Peak memory consumption was 6.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:24,199 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:31:24,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.25 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 178.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:24,201 INFO L168 Benchmark]: Boogie Preprocessor took 45.39 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 176.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:24,201 INFO L168 Benchmark]: RCFGBuilder took 496.77 ms. Allocated memory is still 200.8 MB. Free memory was 176.5 MB in the beginning and 145.9 MB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:31:24,202 INFO L168 Benchmark]: TraceAbstraction took 1084.83 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 145.9 MB in the beginning and 189.1 MB in the end (delta: -43.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 18:31:24,206 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.25 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 178.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.39 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 176.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 496.77 ms. Allocated memory is still 200.8 MB. Free memory was 176.5 MB in the beginning and 145.9 MB in the end (delta: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1084.83 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 145.9 MB in the beginning and 189.1 MB in the end (delta: -43.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = -1.0 / 0.0; [L85] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] RET, EXPR trunc_double(x) [L85] double res = trunc_double(x); [L88] CALL, EXPR isinf_double(res) [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] RET, EXPR isinf_double(res) [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 19 SDslu, 69 SDs, 0 SdLazy, 139 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred 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...