/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:14:12,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:14:12,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:14:12,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:14:12,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:14:12,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:14:12,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:14:12,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:14:12,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:14:12,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:14:12,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:14:12,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:14:12,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:14:12,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:14:12,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:14:12,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:14:12,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:14:12,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:14:12,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:14:12,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:14:12,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:14:12,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:14:12,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:14:12,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:14:12,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 13:14:12,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:14:12,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:14:12,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:14:12,119 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:14:12,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:14:12,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:14:12,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:14:12,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:14:12,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:14:12,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:14:12,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:14:12,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:14:12,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:14:12,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:14:12,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:14:12,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:14:12,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:14:12,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:14:12,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:14:12,155 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:14:12,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:14:12,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:14:12,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:14:12,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:14:12,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:14:12,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:14:12,158 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:14:12,467 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:14:12,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:14:12,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:14:12,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:14:12,485 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:14:12,486 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-07-17 13:14:12,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eccf0214/ceb095ac2c29499293eb0156adcd8883/FLAGa9daef0e2 [2020-07-17 13:14:13,038 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:14:13,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-07-17 13:14:13,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eccf0214/ceb095ac2c29499293eb0156adcd8883/FLAGa9daef0e2 [2020-07-17 13:14:13,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eccf0214/ceb095ac2c29499293eb0156adcd8883 [2020-07-17 13:14:13,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:14:13,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:14:13,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:13,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:14:13,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:14:13,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d71f3c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13, skipping insertion in model container [2020-07-17 13:14:13,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:14:13,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:14:13,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:13,663 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:14:13,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:13,795 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:14:13,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13 WrapperNode [2020-07-17 13:14:13,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:13,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:14:13,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:14:13,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:14:13,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (1/1) ... [2020-07-17 13:14:13,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:14:13,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:14:13,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:14:13,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:14:13,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (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 [2020-07-17 13:14:13,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:14:13,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:14:13,920 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2020-07-17 13:14:13,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-17 13:14:13,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:14:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:14:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2020-07-17 13:14:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 13:14:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 13:14:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:14:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:14:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:14:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 13:14:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-17 13:14:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:14:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:14:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:14:14,441 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:14:14,442 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-17 13:14:14,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:14 BoogieIcfgContainer [2020-07-17 13:14:14,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:14:14,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:14:14,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:14:14,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:14:14,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:14:13" (1/3) ... [2020-07-17 13:14:14,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe2411e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:14, skipping insertion in model container [2020-07-17 13:14:14,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:13" (2/3) ... [2020-07-17 13:14:14,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe2411e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:14, skipping insertion in model container [2020-07-17 13:14:14,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:14" (3/3) ... [2020-07-17 13:14:14,458 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-07-17 13:14:14,468 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:14:14,476 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:14:14,491 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:14:14,513 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:14:14,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:14:14,514 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:14:14,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:14:14,514 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:14:14,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:14:14,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:14:14,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:14:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2020-07-17 13:14:14,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-17 13:14:14,547 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:14,548 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] [2020-07-17 13:14:14,548 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:14,555 INFO L82 PathProgramCache]: Analyzing trace with hash -3412261, now seen corresponding path program 1 times [2020-07-17 13:14:14,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:14,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825924222] [2020-07-17 13:14:14,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:14:14,930 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:14,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825924222] [2020-07-17 13:14:14,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:14,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 13:14:14,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879891085] [2020-07-17 13:14:14,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 13:14:14,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:14,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 13:14:14,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:14:14,963 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 7 states. [2020-07-17 13:14:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:15,425 INFO L93 Difference]: Finished difference Result 252 states and 291 transitions. [2020-07-17 13:14:15,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 13:14:15,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-07-17 13:14:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:15,438 INFO L225 Difference]: With dead ends: 252 [2020-07-17 13:14:15,439 INFO L226 Difference]: Without dead ends: 120 [2020-07-17 13:14:15,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:14:15,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-17 13:14:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-07-17 13:14:15,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-17 13:14:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2020-07-17 13:14:15,503 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 41 [2020-07-17 13:14:15,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:15,504 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2020-07-17 13:14:15,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 13:14:15,504 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2020-07-17 13:14:15,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-17 13:14:15,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:15,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:15,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:14:15,509 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:15,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:15,509 INFO L82 PathProgramCache]: Analyzing trace with hash 376809565, now seen corresponding path program 1 times [2020-07-17 13:14:15,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:15,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47134629] [2020-07-17 13:14:15,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:14:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:14:15,759 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:15,760 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 13:14:15,760 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 13:14:15,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:14:15,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:14:15 BoogieIcfgContainer [2020-07-17 13:14:15,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:14:15,797 INFO L168 Benchmark]: Toolchain (without parser) took 2387.25 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 102.6 MB in the beginning and 174.3 MB in the end (delta: -71.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,798 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.60 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 180.8 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,802 INFO L168 Benchmark]: Boogie Preprocessor took 51.71 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 178.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,803 INFO L168 Benchmark]: RCFGBuilder took 600.39 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 146.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,805 INFO L168 Benchmark]: TraceAbstraction took 1343.37 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 145.5 MB in the beginning and 174.3 MB in the end (delta: -28.8 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:15,816 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.60 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 180.8 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.71 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 178.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 600.39 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 146.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1343.37 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 145.5 MB in the beginning and 174.3 MB in the end (delta: -28.8 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; [L80] float x = 0.0f / 0.0f; [L81] float iptr; [L82] CALL, EXPR modf_float(x, &iptr) [L14] __int32_t i0, j0; [L15] __uint32_t i; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f [L22] COND TRUE j0 < 23 [L23] COND TRUE j0 < 0 [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = (i0 & 0x80000000) [L27] EXPR sf_u.value [L27] (*iptr) = sf_u.value [L29] return x; [L82] RET, EXPR modf_float(x, &iptr) [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) [L85] CALL, EXPR isnan_float(iptr) [L73] return x != x; [L85] RET, EXPR isnan_float(iptr) [L85] isnan_float(iptr) && !isnan_float(res) [L85] CALL, EXPR isnan_float(res) [L73] return x != x; [L85] RET, EXPR isnan_float(res) [L85] isnan_float(iptr) && !isnan_float(res) [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 134 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 42 SDslu, 185 SDs, 0 SdLazy, 197 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred 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...