/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_1072b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:10:39,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:10:39,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:10:39,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:10:39,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:10:39,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:10:39,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:10:39,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:10:39,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:10:39,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:10:39,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:10:39,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:10:39,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:10:39,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:10:39,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:10:39,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:10:39,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:10:39,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:10:39,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:10:39,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:10:39,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:10:39,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:10:39,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:10:39,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:10:40,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:10:40,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:10:40,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:10:40,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:10:40,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:10:40,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:10:40,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:10:40,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:10:40,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:10:40,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:10:40,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:10:40,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:10:40,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:10:40,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:10:40,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:10:40,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:10:40,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:10:40,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:10:40,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:10:40,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:10:40,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:10:40,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:10:40,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:10:40,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:10:40,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:10:40,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:10:40,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:10:40,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:10:40,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:10:40,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:10:40,046 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:10:40,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:10:40,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:10:40,047 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:10:40,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:10:40,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:10:40,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:10:40,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:10:40,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:10:40,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:10:40,048 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:10:40,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:10:40,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:10:40,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:10:40,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:10:40,483 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:10:40,484 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072b.c [2020-09-04 16:10:40,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e4e99f71/2059083a0f0049bc8e70eae22acadba4/FLAG8d6485464 [2020-09-04 16:10:41,106 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:10:41,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1072b.c [2020-09-04 16:10:41,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e4e99f71/2059083a0f0049bc8e70eae22acadba4/FLAG8d6485464 [2020-09-04 16:10:41,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e4e99f71/2059083a0f0049bc8e70eae22acadba4 [2020-09-04 16:10:41,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:10:41,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:10:41,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:41,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:10:41,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:10:41,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:41" (1/1) ... [2020-09-04 16:10:41,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4241192c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:41, skipping insertion in model container [2020-09-04 16:10:41,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:41" (1/1) ... [2020-09-04 16:10:41,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:10:41,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:10:41,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:41,715 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:10:41,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:41,863 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:10:41,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:41 WrapperNode [2020-09-04 16:10:41,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:41,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:10:41,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:10:41,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:10:41,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:41" (1/1) ... [2020-09-04 16:10:41,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:41" (1/1) ... [2020-09-04 16:10:41,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:41" (1/1) ... [2020-09-04 16:10:41,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:41" (1/1) ... [2020-09-04 16:10:41,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:41" (1/1) ... [2020-09-04 16:10:41,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:41" (1/1) ... [2020-09-04 16:10:41,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:41" (1/1) ... [2020-09-04 16:10:41,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:10:41,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:10:41,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:10:41,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:10:41,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:10:41,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:10:41,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:10:41,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-04 16:10:41,990 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-09-04 16:10:41,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-04 16:10:41,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:10:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:10:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-04 16:10:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-09-04 16:10:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:10:41,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:10:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:10:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:10:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:10:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:10:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-04 16:10:41,992 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:10:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:10:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:10:42,483 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:10:42,484 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-04 16:10:42,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:42 BoogieIcfgContainer [2020-09-04 16:10:42,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:10:42,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:10:42,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:10:42,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:10:42,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:10:41" (1/3) ... [2020-09-04 16:10:42,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fdbeb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:42, skipping insertion in model container [2020-09-04 16:10:42,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:41" (2/3) ... [2020-09-04 16:10:42,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fdbeb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:42, skipping insertion in model container [2020-09-04 16:10:42,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:42" (3/3) ... [2020-09-04 16:10:42,503 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072b.c [2020-09-04 16:10:42,512 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:10:42,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:10:42,543 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:10:42,567 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:10:42,567 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:10:42,567 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:10:42,567 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:10:42,568 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:10:42,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:10:42,568 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:10:42,568 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:10:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-09-04 16:10:42,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 16:10:42,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:42,599 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] [2020-09-04 16:10:42,600 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:42,607 INFO L82 PathProgramCache]: Analyzing trace with hash -752135517, now seen corresponding path program 1 times [2020-09-04 16:10:42,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:42,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398070981] [2020-09-04 16:10:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:42,688 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:42,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:10:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:42,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:10:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:10:42,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398070981] [2020-09-04 16:10:42,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:10:42,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:10:42,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61059597] [2020-09-04 16:10:42,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:10:42,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:10:42,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:10:42,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:10:42,892 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2020-09-04 16:10:43,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:10:43,225 INFO L93 Difference]: Finished difference Result 205 states and 236 transitions. [2020-09-04 16:10:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:10:43,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-09-04 16:10:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:10:43,246 INFO L225 Difference]: With dead ends: 205 [2020-09-04 16:10:43,246 INFO L226 Difference]: Without dead ends: 102 [2020-09-04 16:10:43,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:10:43,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-04 16:10:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-04 16:10:43,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-04 16:10:43,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-09-04 16:10:43,357 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 31 [2020-09-04 16:10:43,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:10:43,357 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-09-04 16:10:43,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:10:43,358 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-09-04 16:10:43,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 16:10:43,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:43,364 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] [2020-09-04 16:10:43,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:10:43,365 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:43,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:43,366 INFO L82 PathProgramCache]: Analyzing trace with hash -34176642, now seen corresponding path program 1 times [2020-09-04 16:10:43,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:43,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492435733] [2020-09-04 16:10:43,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:43,374 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:43,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:43,539 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:43,598 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:10:43,599 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:10:43,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:10:43,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:10:43 BoogieIcfgContainer [2020-09-04 16:10:43,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:10:43,628 INFO L168 Benchmark]: Toolchain (without parser) took 2213.41 ms. Allocated memory was 137.9 MB in the beginning and 232.8 MB in the end (delta: 94.9 MB). Free memory was 102.1 MB in the beginning and 201.3 MB in the end (delta: -99.2 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:43,629 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:10:43,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.67 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 180.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:43,631 INFO L168 Benchmark]: Boogie Preprocessor took 58.03 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:43,632 INFO L168 Benchmark]: RCFGBuilder took 568.47 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 148.6 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:43,633 INFO L168 Benchmark]: TraceAbstraction took 1129.80 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 147.9 MB in the beginning and 201.3 MB in the end (delta: -53.4 MB). Peak memory consumption was 70.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:43,637 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 449.67 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 180.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.03 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 568.47 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 148.6 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1129.80 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 147.9 MB in the beginning and 201.3 MB in the end (delta: -53.4 MB). Peak memory consumption was 70.6 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 someBinaryDOUBLEComparisonOperation at line 85, overapproximation of bitwiseAnd at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49. Possible FailurePath: [L81] double x = 0.0; [L82] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L82] RET, EXPR trunc_double(x) [L82] double res = trunc_double(x); [L85] EXPR res == 0.0 && __signbit_double(res) == 0 [L85] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L86] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 17 SDslu, 69 SDs, 0 SdLazy, 135 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred 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...