/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_1092c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:10:46,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:10:46,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:10:46,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:10:46,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:10:46,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:10:46,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:10:46,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:10:46,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:10:46,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:10:46,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:10:46,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:10:46,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:10:46,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:10:46,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:10:46,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:10:46,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:10:46,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:10:46,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:10:46,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:10:46,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:10:46,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:10:46,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:10:46,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:10:46,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:10:46,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:10:46,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:10:46,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:10:46,281 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 16:10:46,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:10:46,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:10:46,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:10:46,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:10:46,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:10:46,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:10:46,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:10:46,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:10:46,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:10:46,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:10:46,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:10:46,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:10:46,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:10:46,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:10:46,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:10:46,298 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:10:46,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:10:46,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:10:46,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:10:46,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:10:46,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:10:46,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:10:46,300 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:10:46,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:10:46,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:10:46,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:10:46,813 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:10:46,814 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:10:46,815 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092c.c [2020-09-04 16:10:46,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f47c10073/45f36bb883df4dc48d8d2372097d29e5/FLAGe667288ac [2020-09-04 16:10:47,518 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:10:47,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092c.c [2020-09-04 16:10:47,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f47c10073/45f36bb883df4dc48d8d2372097d29e5/FLAGe667288ac [2020-09-04 16:10:47,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f47c10073/45f36bb883df4dc48d8d2372097d29e5 [2020-09-04 16:10:47,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:10:47,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:10:47,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:47,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:10:47,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:10:47,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:47" (1/1) ... [2020-09-04 16:10:47,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d644d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:47, skipping insertion in model container [2020-09-04 16:10:47,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:47" (1/1) ... [2020-09-04 16:10:47,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:10:47,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:10:48,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:48,130 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:10:48,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:48,277 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:10:48,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:48 WrapperNode [2020-09-04 16:10:48,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:48,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:10:48,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:10:48,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:10:48,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:48" (1/1) ... [2020-09-04 16:10:48,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:48" (1/1) ... [2020-09-04 16:10:48,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:48" (1/1) ... [2020-09-04 16:10:48,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:48" (1/1) ... [2020-09-04 16:10:48,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:48" (1/1) ... [2020-09-04 16:10:48,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:48" (1/1) ... [2020-09-04 16:10:48,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:48" (1/1) ... [2020-09-04 16:10:48,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:10:48,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:10:48,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:10:48,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:10:48,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:48" (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 16:10:48,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:10:48,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:10:48,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-09-04 16:10:48,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-04 16:10:48,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:10:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:10:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-09-04 16:10:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:10:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:10:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:10:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:10:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:10:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:10:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-04 16:10:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:10:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:10:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:10:48,972 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:10:48,972 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 16:10:48,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:48 BoogieIcfgContainer [2020-09-04 16:10:48,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:10:48,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:10:48,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:10:48,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:10:48,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:10:47" (1/3) ... [2020-09-04 16:10:48,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da7a149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:48, skipping insertion in model container [2020-09-04 16:10:48,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:48" (2/3) ... [2020-09-04 16:10:48,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da7a149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:48, skipping insertion in model container [2020-09-04 16:10:48,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:48" (3/3) ... [2020-09-04 16:10:48,990 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092c.c [2020-09-04 16:10:49,002 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:10:49,013 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:10:49,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:10:49,062 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:10:49,062 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:10:49,062 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:10:49,062 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:10:49,062 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:10:49,063 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:10:49,063 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:10:49,063 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:10:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2020-09-04 16:10:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 16:10:49,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:49,100 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] [2020-09-04 16:10:49,100 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:49,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:49,107 INFO L82 PathProgramCache]: Analyzing trace with hash -14929888, now seen corresponding path program 1 times [2020-09-04 16:10:49,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:49,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489116755] [2020-09-04 16:10:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:49,192 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:49,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:10:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 16:10:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:49,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 16:10:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:49,414 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 16:10:49,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489116755] [2020-09-04 16:10:49,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:10:49,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:10:49,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988338222] [2020-09-04 16:10:49,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:10:49,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:10:49,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:10:49,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:10:49,448 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 4 states. [2020-09-04 16:10:49,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:10:49,856 INFO L93 Difference]: Finished difference Result 221 states and 264 transitions. [2020-09-04 16:10:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:10:49,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-04 16:10:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:10:49,882 INFO L225 Difference]: With dead ends: 221 [2020-09-04 16:10:49,883 INFO L226 Difference]: Without dead ends: 112 [2020-09-04 16:10:49,890 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 [2020-09-04 16:10:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-04 16:10:49,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-09-04 16:10:49,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-04 16:10:49,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2020-09-04 16:10:49,974 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 41 [2020-09-04 16:10:49,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:10:49,975 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2020-09-04 16:10:49,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:10:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2020-09-04 16:10:49,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-04 16:10:49,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:49,979 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, 1] [2020-09-04 16:10:49,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:10:49,980 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:49,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:49,981 INFO L82 PathProgramCache]: Analyzing trace with hash 345019468, now seen corresponding path program 1 times [2020-09-04 16:10:49,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:49,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204394451] [2020-09-04 16:10:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:49,998 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:50,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:50,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:50,343 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:10:50,344 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:10:50,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:10:50,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:10:50 BoogieIcfgContainer [2020-09-04 16:10:50,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:10:50,407 INFO L168 Benchmark]: Toolchain (without parser) took 2562.51 ms. Allocated memory was 137.4 MB in the beginning and 230.7 MB in the end (delta: 93.3 MB). Free memory was 101.2 MB in the beginning and 187.7 MB in the end (delta: -86.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:50,409 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-04 16:10:50,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.58 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 179.3 MB in the end (delta: -78.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:50,414 INFO L168 Benchmark]: Boogie Preprocessor took 67.21 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 175.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:50,415 INFO L168 Benchmark]: RCFGBuilder took 633.59 ms. Allocated memory is still 200.8 MB. Free memory was 175.9 MB in the beginning and 146.6 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:50,418 INFO L168 Benchmark]: TraceAbstraction took 1418.69 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 145.6 MB in the beginning and 187.7 MB in the end (delta: -42.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:10:50,424 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 437.58 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 179.3 MB in the end (delta: -78.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.21 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 175.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 633.59 ms. Allocated memory is still 200.8 MB. Free memory was 175.9 MB in the beginning and 146.6 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1418.69 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 145.6 MB in the beginning and 187.7 MB in the end (delta: -42.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 107]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 92, overapproximation of someBinaryArithmeticDOUBLEoperation at line 103, overapproximation of bitwiseAnd at line 89. Possible FailurePath: [L14] static const double huge_ceil = 1.0e300; [L103] double x = 1.0 / 0.0; [L104] CALL, EXPR ceil_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND FALSE !(j0 < 20) [L48] COND TRUE j0 > 51 [L49] COND FALSE !(j0 == 0x400) [L52] return x; [L104] RET, EXPR ceil_double(x) [L104] double res = ceil_double(x); [L106] CALL, EXPR isinf_double(res) [L82] __int32_t hx, lx; [L84] ieee_double_shape_type ew_u; [L85] ew_u.value = (x) [L86] EXPR ew_u.parts.msw [L86] (hx) = ew_u.parts.msw [L87] EXPR ew_u.parts.lsw [L87] (lx) = ew_u.parts.lsw [L89] hx &= 0x7fffffff [L90] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L91] hx = 0x7ff00000 - hx [L92] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L106] RET, EXPR isinf_double(res) [L106] COND TRUE !isinf_double(res) [L107] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 119 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 21 SDslu, 97 SDs, 0 SdLazy, 141 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=119occurred 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...