/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:01:19,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:01:19,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:01:19,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:01:19,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:01:19,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:01:19,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:01:19,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:01:19,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:01:19,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:01:19,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:01:19,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:01:19,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:01:19,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:01:19,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:01:19,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:01:19,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:01:19,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:01:19,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:01:19,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:01:19,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:01:19,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:01:19,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:01:19,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:01:19,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:01:19,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:01:19,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:01:19,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:01:19,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:01:19,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:01:19,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:01:19,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:01:19,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:01:19,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:01:19,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:01:19,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:01:19,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:01:19,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:01:19,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:01:19,509 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:01:19,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:01:19,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:01:19,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:01:19,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:01:19,513 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:01:19,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:01:19,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:01:19,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:01:19,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:01:19,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:01:19,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:01:19,514 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:01:19,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:01:19,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:01:19,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:01:19,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:01:19,822 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:01:19,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-07 13:01:19,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f79e4e2/f341a72ef52e41839fc68d462b6f78f8/FLAG84b275e4e [2020-07-07 13:01:20,439 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:01:20,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-07 13:01:20,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f79e4e2/f341a72ef52e41839fc68d462b6f78f8/FLAG84b275e4e [2020-07-07 13:01:20,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f79e4e2/f341a72ef52e41839fc68d462b6f78f8 [2020-07-07 13:01:20,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:01:20,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:01:20,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:01:20,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:01:20,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:01:20,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:01:20" (1/1) ... [2020-07-07 13:01:20,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:20, skipping insertion in model container [2020-07-07 13:01:20,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:01:20" (1/1) ... [2020-07-07 13:01:20,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:01:20,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:01:21,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:01:21,078 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:01:21,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:01:21,260 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:01:21,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:21 WrapperNode [2020-07-07 13:01:21,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:01:21,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:01:21,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:01:21,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:01:21,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:21" (1/1) ... [2020-07-07 13:01:21,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:21" (1/1) ... [2020-07-07 13:01:21,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:21" (1/1) ... [2020-07-07 13:01:21,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:21" (1/1) ... [2020-07-07 13:01:21,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:21" (1/1) ... [2020-07-07 13:01:21,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:21" (1/1) ... [2020-07-07 13:01:21,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:21" (1/1) ... [2020-07-07 13:01:21,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:01:21,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:01:21,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:01:21,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:01:21,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:01:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:01:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:01:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-07 13:01:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-07 13:01:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:01:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:01:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-07 13:01:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-07 13:01:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:01:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 13:01:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:01:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:01:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 13:01:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:01:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-07 13:01:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:01:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:01:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-07 13:01:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:01:22,136 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:01:22,136 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-07 13:01:22,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:01:22 BoogieIcfgContainer [2020-07-07 13:01:22,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:01:22,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:01:22,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:01:22,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:01:22,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:01:20" (1/3) ... [2020-07-07 13:01:22,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbbb193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:01:22, skipping insertion in model container [2020-07-07 13:01:22,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:21" (2/3) ... [2020-07-07 13:01:22,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbbb193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:01:22, skipping insertion in model container [2020-07-07 13:01:22,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:01:22" (3/3) ... [2020-07-07 13:01:22,153 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-07-07 13:01:22,164 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:01:22,172 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:01:22,187 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:01:22,208 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:01:22,208 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:01:22,208 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:01:22,208 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:01:22,209 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:01:22,209 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:01:22,209 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:01:22,209 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:01:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-07-07 13:01:22,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-07 13:01:22,243 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:22,244 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] [2020-07-07 13:01:22,244 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:22,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1577177176, now seen corresponding path program 1 times [2020-07-07 13:01:22,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:22,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620208230] [2020-07-07 13:01:22,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:01:22,536 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:22,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620208230] [2020-07-07 13:01:22,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:01:22,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:01:22,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465011870] [2020-07-07 13:01:22,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:01:22,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:01:22,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:01:22,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:01:22,575 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-07-07 13:01:23,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:01:23,126 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-07-07 13:01:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:01:23,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-07-07 13:01:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:01:23,143 INFO L225 Difference]: With dead ends: 414 [2020-07-07 13:01:23,143 INFO L226 Difference]: Without dead ends: 209 [2020-07-07 13:01:23,149 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 [2020-07-07 13:01:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-07-07 13:01:23,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-07-07 13:01:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-07-07 13:01:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-07-07 13:01:23,222 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-07-07 13:01:23,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:01:23,222 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-07-07 13:01:23,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:01:23,223 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-07-07 13:01:23,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-07 13:01:23,226 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:23,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:01:23,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:01:23,227 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:23,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:23,228 INFO L82 PathProgramCache]: Analyzing trace with hash -16125544, now seen corresponding path program 1 times [2020-07-07 13:01:23,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:23,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183704060] [2020-07-07 13:01:23,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:01:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:01:23,605 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:23,606 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:01:23,606 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:01:23,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:01:23,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:01:23 BoogieIcfgContainer [2020-07-07 13:01:23,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:01:23,667 INFO L168 Benchmark]: Toolchain (without parser) took 2862.57 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 102.9 MB in the beginning and 127.3 MB in the end (delta: -24.4 MB). Peak memory consumption was 65.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:23,668 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:01:23,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.85 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 102.4 MB in the beginning and 177.1 MB in the end (delta: -74.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:23,672 INFO L168 Benchmark]: Boogie Preprocessor took 64.91 ms. Allocated memory is still 201.9 MB. Free memory was 177.1 MB in the beginning and 174.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:23,673 INFO L168 Benchmark]: RCFGBuilder took 817.45 ms. Allocated memory is still 201.9 MB. Free memory was 174.4 MB in the beginning and 127.0 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:23,675 INFO L168 Benchmark]: TraceAbstraction took 1518.44 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 127.0 MB in the beginning and 127.3 MB in the end (delta: -290.9 kB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:23,681 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 456.85 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 102.4 MB in the beginning and 177.1 MB in the end (delta: -74.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.91 ms. Allocated memory is still 201.9 MB. Free memory was 177.1 MB in the beginning and 174.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 817.45 ms. Allocated memory is still 201.9 MB. Free memory was 174.4 MB in the beginning and 127.0 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1518.44 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 127.0 MB in the beginning and 127.3 MB in the end (delta: -290.9 kB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 216 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 37 SDslu, 182 SDs, 0 SdLazy, 260 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=216occurred 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...