/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_1072c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:14:07,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:14:07,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:14:07,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:14:07,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:14:07,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:14:07,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:14:07,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:14:07,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:14:07,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:14:07,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:14:07,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:14:07,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:14:07,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:14:07,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:14:07,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:14:07,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:14:07,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:14:07,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:14:07,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:14:07,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:14:07,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:14:07,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:14:07,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:14:07,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 13:14:07,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 13:14:07,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 13:14:07,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 13:14:07,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 13:14:07,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 13:14:07,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 13:14:07,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 13:14:07,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 13:14:07,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:14:07,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:14:07,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:14:07,947 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 13:14:07,955 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:14:07,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:14:07,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:14:07,957 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:14:07,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:14:07,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:14:07,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:14:07,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:14:07,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:14:07,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:14:07,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:14:07,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:14:07,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:14:07,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:14:07,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:14:07,959 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:14:07,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:14:07,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:14:07,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:14:07,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:14:07,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:14:07,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:14:07,961 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:14:08,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:14:08,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:14:08,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:14:08,249 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:14:08,249 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:14:08,250 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072c.c [2020-07-17 13:14:08,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41a0f6d72/780b34f56e5e441a8872e2b9b1fe5b08/FLAG410735942 [2020-07-17 13:14:08,839 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:14:08,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072c.c [2020-07-17 13:14:08,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41a0f6d72/780b34f56e5e441a8872e2b9b1fe5b08/FLAG410735942 [2020-07-17 13:14:09,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41a0f6d72/780b34f56e5e441a8872e2b9b1fe5b08 [2020-07-17 13:14:09,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:14:09,163 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:14:09,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:09,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:14:09,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:14:09,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:09" (1/1) ... [2020-07-17 13:14:09,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5785b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:09, skipping insertion in model container [2020-07-17 13:14:09,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:09" (1/1) ... [2020-07-17 13:14:09,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:14:09,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:14:09,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:09,401 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:14:09,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:09,453 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:14:09,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:09 WrapperNode [2020-07-17 13:14:09,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:09,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:14:09,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:14:09,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:14:09,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:09" (1/1) ... [2020-07-17 13:14:09,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:09" (1/1) ... [2020-07-17 13:14:09,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:09" (1/1) ... [2020-07-17 13:14:09,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:09" (1/1) ... [2020-07-17 13:14:09,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:09" (1/1) ... [2020-07-17 13:14:09,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:09" (1/1) ... [2020-07-17 13:14:09,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:09" (1/1) ... [2020-07-17 13:14:09,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:14:09,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:14:09,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:14:09,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:14:09,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:09" (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 13:14:09,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:14:09,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:14:09,653 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-07-17 13:14:09,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-17 13:14:09,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:14:09,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:14:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-07-17 13:14:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 13:14:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 13:14:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:14:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:14:09,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:14:09,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 13:14:09,656 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-17 13:14:09,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:14:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:14:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:14:10,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:14:10,032 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-17 13:14:10,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:10 BoogieIcfgContainer [2020-07-17 13:14:10,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:14:10,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:14:10,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:14:10,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:14:10,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:14:09" (1/3) ... [2020-07-17 13:14:10,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b724eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:10, skipping insertion in model container [2020-07-17 13:14:10,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:09" (2/3) ... [2020-07-17 13:14:10,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b724eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:10, skipping insertion in model container [2020-07-17 13:14:10,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:10" (3/3) ... [2020-07-17 13:14:10,046 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072c.c [2020-07-17 13:14:10,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:14:10,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:14:10,079 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:14:10,113 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:14:10,114 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:14:10,114 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:14:10,114 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:14:10,114 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:14:10,114 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:14:10,114 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:14:10,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:14:10,132 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-07-17 13:14:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-17 13:14:10,144 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:10,145 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] [2020-07-17 13:14:10,146 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:10,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:10,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1005072347, now seen corresponding path program 1 times [2020-07-17 13:14:10,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:10,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40007173] [2020-07-17 13:14:10,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:10,429 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 13:14:10,435 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:10,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40007173] [2020-07-17 13:14:10,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:10,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:14:10,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442904964] [2020-07-17 13:14:10,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:14:10,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:10,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:14:10,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:14:10,468 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 4 states. [2020-07-17 13:14:10,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:10,739 INFO L93 Difference]: Finished difference Result 160 states and 185 transitions. [2020-07-17 13:14:10,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 13:14:10,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-07-17 13:14:10,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:10,752 INFO L225 Difference]: With dead ends: 160 [2020-07-17 13:14:10,753 INFO L226 Difference]: Without dead ends: 79 [2020-07-17 13:14:10,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:14:10,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-17 13:14:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-07-17 13:14:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-17 13:14:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-07-17 13:14:10,838 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 29 [2020-07-17 13:14:10,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:10,839 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-07-17 13:14:10,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:14:10,839 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-07-17 13:14:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 13:14:10,841 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:10,841 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] [2020-07-17 13:14:10,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:14:10,842 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:10,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:10,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1440108655, now seen corresponding path program 1 times [2020-07-17 13:14:10,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:10,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57899288] [2020-07-17 13:14:10,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:14:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:14:11,017 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:11,017 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 13:14:11,018 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 13:14:11,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:14:11,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:14:11 BoogieIcfgContainer [2020-07-17 13:14:11,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:14:11,067 INFO L168 Benchmark]: Toolchain (without parser) took 1903.81 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 103.9 MB in the beginning and 101.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:11,071 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 138.9 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 13:14:11,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.08 ms. Allocated memory is still 138.9 MB. Free memory was 103.5 MB in the beginning and 92.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:11,076 INFO L168 Benchmark]: Boogie Preprocessor took 134.01 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 92.7 MB in the beginning and 181.4 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:11,077 INFO L168 Benchmark]: RCFGBuilder took 448.29 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 157.2 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:11,078 INFO L168 Benchmark]: TraceAbstraction took 1025.13 ms. Allocated memory is still 203.9 MB. Free memory was 156.5 MB in the beginning and 101.1 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:11,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 138.9 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.08 ms. Allocated memory is still 138.9 MB. Free memory was 103.5 MB in the beginning and 92.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.01 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 92.7 MB in the beginning and 181.4 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.29 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 157.2 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1025.13 ms. Allocated memory is still 203.9 MB. Free memory was 156.5 MB in the beginning and 101.1 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 67]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 66, overapproximation of bitwiseAnd at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L62] float x = 0.0f; [L63] CALL, EXPR trunc_float(x) [L13] __int32_t signbit, w, exponent_less_127; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L21] COND FALSE !(exponent_less_127 < 23) [L37] COND TRUE exponent_less_127 == 255 [L38] return x + x; [L63] RET, EXPR trunc_float(x) [L63] float res = trunc_float(x); [L66] EXPR res == 0.0f && __signbit_float(res) == 0 [L66] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L67] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 15 SDslu, 59 SDs, 0 SdLazy, 99 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred 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...