/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 21:49:03,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 21:49:03,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 21:49:03,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 21:49:03,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 21:49:03,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 21:49:03,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 21:49:03,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 21:49:03,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 21:49:03,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 21:49:03,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 21:49:03,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 21:49:03,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 21:49:03,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 21:49:03,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 21:49:03,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 21:49:03,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 21:49:03,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 21:49:03,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 21:49:03,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 21:49:03,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 21:49:03,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 21:49:03,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 21:49:03,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 21:49:03,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 21:49:03,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 21:49:03,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 21:49:03,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 21:49:03,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 21:49:03,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 21:49:03,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 21:49:03,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 21:49:03,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 21:49:03,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 21:49:03,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 21:49:03,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 21:49:03,634 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 21:49:03,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 21:49:03,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 21:49:03,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 21:49:03,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 21:49:03,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 21:49:03,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 21:49:03,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 21:49:03,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 21:49:03,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 21:49:03,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 21:49:03,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 21:49:03,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 21:49:03,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 21:49:03,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 21:49:03,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 21:49:03,658 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 21:49:03,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 21:49:03,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 21:49:03,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:49:03,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 21:49:03,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 21:49:03,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 21:49:03,660 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 21:49:03,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 21:49:03,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 21:49:03,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 21:49:03,950 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 21:49:03,950 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 21:49:03,951 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-08-22 21:49:04,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeec7e71c/849198b40d824887b0fd43d61ec75a9d/FLAG8711e6a4f [2020-08-22 21:49:04,457 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 21:49:04,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-08-22 21:49:04,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeec7e71c/849198b40d824887b0fd43d61ec75a9d/FLAG8711e6a4f [2020-08-22 21:49:04,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeec7e71c/849198b40d824887b0fd43d61ec75a9d [2020-08-22 21:49:04,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 21:49:04,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 21:49:04,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 21:49:04,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 21:49:04,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 21:49:04,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:49:04" (1/1) ... [2020-08-22 21:49:04,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174f2b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:04, skipping insertion in model container [2020-08-22 21:49:04,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:49:04" (1/1) ... [2020-08-22 21:49:04,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 21:49:04,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 21:49:05,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:49:05,153 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 21:49:05,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:49:05,218 INFO L208 MainTranslator]: Completed translation [2020-08-22 21:49:05,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:05 WrapperNode [2020-08-22 21:49:05,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 21:49:05,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 21:49:05,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 21:49:05,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 21:49:05,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:05" (1/1) ... [2020-08-22 21:49:05,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:05" (1/1) ... [2020-08-22 21:49:05,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:05" (1/1) ... [2020-08-22 21:49:05,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:05" (1/1) ... [2020-08-22 21:49:05,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:05" (1/1) ... [2020-08-22 21:49:05,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:05" (1/1) ... [2020-08-22 21:49:05,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:05" (1/1) ... [2020-08-22 21:49:05,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 21:49:05,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 21:49:05,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 21:49:05,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 21:49:05,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:05" (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 [2020-08-22 21:49:05,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 21:49:05,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 21:49:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 21:49:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 21:49:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-08-22 21:49:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-08-22 21:49:05,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 21:49:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 21:49:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 21:49:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 21:49:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 21:49:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 21:49:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 21:49:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 21:49:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-08-22 21:49:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-08-22 21:49:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 21:49:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 21:49:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 21:49:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 21:49:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 21:49:05,867 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 21:49:05,867 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-22 21:49:05,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:49:05 BoogieIcfgContainer [2020-08-22 21:49:05,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 21:49:05,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 21:49:05,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 21:49:05,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 21:49:05,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:49:04" (1/3) ... [2020-08-22 21:49:05,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61aba2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:49:05, skipping insertion in model container [2020-08-22 21:49:05,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:05" (2/3) ... [2020-08-22 21:49:05,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61aba2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:49:05, skipping insertion in model container [2020-08-22 21:49:05,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:49:05" (3/3) ... [2020-08-22 21:49:05,880 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-08-22 21:49:05,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 21:49:05,897 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 21:49:05,910 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 21:49:05,932 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 21:49:05,939 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 21:49:05,939 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 21:49:05,939 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 21:49:05,939 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 21:49:05,939 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 21:49:05,939 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 21:49:05,940 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 21:49:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-08-22 21:49:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 21:49:05,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:49:05,983 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] [2020-08-22 21:49:05,983 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:49:05,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:49:05,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1675366147, now seen corresponding path program 1 times [2020-08-22 21:49:05,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:49:05,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201768162] [2020-08-22 21:49:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:49:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:06,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:49:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:06,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:49:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:06,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 21:49:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 21:49:06,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201768162] [2020-08-22 21:49:06,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:49:06,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 21:49:06,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239943234] [2020-08-22 21:49:06,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 21:49:06,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:49:06,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 21:49:06,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 21:49:06,265 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 4 states. [2020-08-22 21:49:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:49:06,490 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2020-08-22 21:49:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 21:49:06,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-08-22 21:49:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:49:06,501 INFO L225 Difference]: With dead ends: 138 [2020-08-22 21:49:06,502 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 21:49:06,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 21:49:06,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 21:49:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-22 21:49:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 21:49:06,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 67 transitions. [2020-08-22 21:49:06,555 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 67 transitions. Word has length 33 [2020-08-22 21:49:06,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:49:06,556 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 67 transitions. [2020-08-22 21:49:06,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 21:49:06,556 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 67 transitions. [2020-08-22 21:49:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 21:49:06,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:49:06,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:49:06,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 21:49:06,560 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:49:06,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:49:06,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1980992917, now seen corresponding path program 1 times [2020-08-22 21:49:06,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:49:06,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161453708] [2020-08-22 21:49:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:49:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:49:06,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:49:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:49:06,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:49:06,880 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 21:49:06,880 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 21:49:06,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 21:49:06,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 09:49:06 BoogieIcfgContainer [2020-08-22 21:49:06,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 21:49:06,927 INFO L168 Benchmark]: Toolchain (without parser) took 2057.94 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 101.6 MB in the beginning and 95.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:06,928 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-08-22 21:49:06,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.19 ms. Allocated memory is still 146.3 MB. Free memory was 101.4 MB in the beginning and 90.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:06,930 INFO L168 Benchmark]: Boogie Preprocessor took 168.64 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 90.4 MB in the beginning and 180.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:06,931 INFO L168 Benchmark]: RCFGBuilder took 482.45 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 154.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:06,932 INFO L168 Benchmark]: TraceAbstraction took 1051.29 ms. Allocated memory is still 202.9 MB. Free memory was 154.3 MB in the beginning and 95.6 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:06,936 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 350.19 ms. Allocated memory is still 146.3 MB. Free memory was 101.4 MB in the beginning and 90.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 168.64 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 90.4 MB in the beginning and 180.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.45 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 154.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1051.29 ms. Allocated memory is still 202.9 MB. Free memory was 154.3 MB in the beginning and 95.6 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 73]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 68, overapproximation of bitwiseAnd at line 38. Possible FailurePath: [L68] double x = -1.0 / 0.0; [L69] CALL, EXPR fabs_double(x) VAL [\old(x)=8589934604] [L45] __uint32_t high; VAL [\old(x)=8589934604, x=8589934604] [L47] ieee_double_shape_type gh_u; VAL [\old(x)=8589934604, gh_u={3:0}, x=8589934604] [L48] gh_u.value = (x) VAL [\old(x)=8589934604, gh_u={3:0}, x=8589934604] [L49] EXPR gh_u.parts.msw VAL [\old(x)=8589934604, gh_u={3:0}, gh_u.parts.msw=8589934605, x=8589934604] [L49] (high) = gh_u.parts.msw VAL [(high) = gh_u.parts.msw=8589934593, \old(x)=8589934604, gh_u={3:0}, gh_u.parts.msw=8589934605, high=13, x=8589934604] [L52] ieee_double_shape_type sh_u; VAL [\old(x)=8589934604, high=13, sh_u={5:0}, x=8589934604] [L53] sh_u.value = (x) VAL [\old(x)=8589934604, high=13, sh_u={5:0}, x=8589934604] [L54] sh_u.parts.msw = (high & 0x7fffffff) VAL [\old(x)=8589934604, high=13, sh_u={5:0}, x=8589934604] [L55] EXPR sh_u.value VAL [\old(x)=8589934604, high=13, sh_u={5:0}, sh_u.value=8589934604, x=8589934604] [L55] (x) = sh_u.value VAL [\old(x)=8589934604, high=13, sh_u={5:0}, sh_u.value=8589934604, x=8589934604] [L57] return x; VAL [\old(x)=8589934604, \result=8589934604, high=13, x=8589934604] [L69] RET, EXPR fabs_double(x) VAL [fabs_double(x)=8589934604, x=8589934604] [L69] double res = fabs_double(x); VAL [fabs_double(x)=8589934604, res=8589934604, x=8589934604] [L72] CALL, EXPR isinf_double(res) VAL [\old(x)=8589934604] [L31] __int32_t hx, lx; VAL [\old(x)=8589934604, x=8589934604] [L33] ieee_double_shape_type ew_u; VAL [\old(x)=8589934604, ew_u={2:0}, x=8589934604] [L34] ew_u.value = (x) VAL [\old(x)=8589934604, ew_u={2:0}, x=8589934604] [L35] EXPR ew_u.parts.msw VAL [\old(x)=8589934604, ew_u={2:0}, ew_u.parts.msw=8589934590, x=8589934604] [L35] (hx) = ew_u.parts.msw VAL [(hx) = ew_u.parts.msw=8589934598, \old(x)=8589934604, ew_u={2:0}, ew_u.parts.msw=8589934590, hx=-2, x=8589934604] [L36] EXPR ew_u.parts.lsw VAL [\old(x)=8589934604, ew_u={2:0}, ew_u.parts.lsw=4294967293, hx=-2, x=8589934604] [L36] (lx) = ew_u.parts.lsw VAL [(lx) = ew_u.parts.lsw=8589934596, \old(x)=8589934604, ew_u={2:0}, ew_u.parts.lsw=4294967293, hx=-2, lx=-3, x=8589934604] [L38] hx &= 0x7fffffff VAL [\old(x)=8589934604, lx=-3, x=8589934604] [L39] hx |= (__uint32_t)(lx | (-lx)) >> 31 VAL [\old(x)=8589934604, hx=6, lx=-3, x=8589934604] [L40] hx = 0x7ff00000 - hx VAL [\old(x)=8589934604, hx=2146435066, lx=-3, x=8589934604] [L41] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=8589934604, \result=0, hx=2146435066, lx=-3, x=8589934604] [L72] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=8589934604, x=8589934604] [L72] COND TRUE !isinf_double(res) VAL [isinf_double(res)=0, res=8589934604, x=8589934604] [L73] __VERIFIER_error() VAL [res=8589934604, x=8589934604] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 13 SDslu, 45 SDs, 0 SdLazy, 83 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...