/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_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:03:02,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:03:02,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:03:02,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:03:02,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:03:02,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:03:02,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:03:02,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:03:02,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:03:02,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:03:02,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:03:02,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:03:02,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:03:02,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:03:02,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:03:02,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:03:02,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:03:02,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:03:02,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:03:02,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:03:02,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:03:02,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:03:02,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:03:02,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:03:02,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:03:02,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:03:02,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:03:02,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:03:02,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:03:02,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:03:02,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:03:02,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:03:02,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:03:02,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:03:02,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:03:02,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:03:02,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:03:02,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:03:02,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:03:02,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:03:02,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:03:02,329 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 17:03:02,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:03:02,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:03:02,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:03:02,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:03:02,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:03:02,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:03:02,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:03:02,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:03:02,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:03:02,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:03:02,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:03:02,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:03:02,347 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:03:02,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:03:02,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:03:02,348 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:03:02,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:03:02,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:03:02,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:03:02,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:03:02,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:03:02,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:03:02,349 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 [2020-07-17 17:03:02,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:03:02,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:03:02,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:03:02,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:03:02,687 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:03:02,688 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-07-17 17:03:02,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca27d0bf/8fff84d9ed84429cb218bac281842200/FLAG92a68bc8c [2020-07-17 17:03:03,166 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:03:03,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-07-17 17:03:03,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca27d0bf/8fff84d9ed84429cb218bac281842200/FLAG92a68bc8c [2020-07-17 17:03:03,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca27d0bf/8fff84d9ed84429cb218bac281842200 [2020-07-17 17:03:03,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:03:03,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:03:03,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:03:03,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:03:03,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:03:03,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:03:03" (1/1) ... [2020-07-17 17:03:03,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb9be9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:03, skipping insertion in model container [2020-07-17 17:03:03,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:03:03" (1/1) ... [2020-07-17 17:03:03,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:03:03,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:03:03,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:03:03,753 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:03:03,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:03:03,807 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:03:03,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:03 WrapperNode [2020-07-17 17:03:03,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:03:03,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:03:03,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:03:03,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:03:03,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:03" (1/1) ... [2020-07-17 17:03:03,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:03" (1/1) ... [2020-07-17 17:03:03,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:03" (1/1) ... [2020-07-17 17:03:03,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:03" (1/1) ... [2020-07-17 17:03:03,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:03" (1/1) ... [2020-07-17 17:03:03,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:03" (1/1) ... [2020-07-17 17:03:03,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:03" (1/1) ... [2020-07-17 17:03:03,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:03:03,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:03:03,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:03:03,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:03:03,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:03" (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 17:03:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:03:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:03:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-17 17:03:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-07-17 17:03:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:03:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:03:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-17 17:03:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-07-17 17:03:04,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 17:03:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 17:03:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:03:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:03:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:03:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 17:03:04,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:03:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:03:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:03:04,380 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:03:04,381 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-17 17:03:04,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:03:04 BoogieIcfgContainer [2020-07-17 17:03:04,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:03:04,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:03:04,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:03:04,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:03:04,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:03:03" (1/3) ... [2020-07-17 17:03:04,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bac1ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:03:04, skipping insertion in model container [2020-07-17 17:03:04,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:03" (2/3) ... [2020-07-17 17:03:04,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bac1ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:03:04, skipping insertion in model container [2020-07-17 17:03:04,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:03:04" (3/3) ... [2020-07-17 17:03:04,406 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2020-07-17 17:03:04,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:03:04,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:03:04,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:03:04,454 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:03:04,455 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:03:04,455 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:03:04,455 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:03:04,455 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:03:04,455 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:03:04,456 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:03:04,456 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:03:04,473 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-07-17 17:03:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-17 17:03:04,484 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:03:04,485 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] [2020-07-17 17:03:04,485 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:03:04,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:03:04,491 INFO L82 PathProgramCache]: Analyzing trace with hash 309483918, now seen corresponding path program 1 times [2020-07-17 17:03:04,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:03:04,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973282891] [2020-07-17 17:03:04,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:03:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:04,753 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 17:03:04,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973282891] [2020-07-17 17:03:04,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:03:04,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:03:04,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147928906] [2020-07-17 17:03:04,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:03:04,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:03:04,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:03:04,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:03:04,781 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2020-07-17 17:03:05,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:03:05,132 INFO L93 Difference]: Finished difference Result 173 states and 197 transitions. [2020-07-17 17:03:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:03:05,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-07-17 17:03:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:03:05,160 INFO L225 Difference]: With dead ends: 173 [2020-07-17 17:03:05,160 INFO L226 Difference]: Without dead ends: 87 [2020-07-17 17:03:05,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 17:03:05,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-17 17:03:05,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-07-17 17:03:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-07-17 17:03:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2020-07-17 17:03:05,216 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 34 [2020-07-17 17:03:05,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:03:05,217 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2020-07-17 17:03:05,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:03:05,218 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2020-07-17 17:03:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-17 17:03:05,220 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:03:05,221 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] [2020-07-17 17:03:05,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:03:05,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:03:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:03:05,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1117903960, now seen corresponding path program 1 times [2020-07-17 17:03:05,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:03:05,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702624826] [2020-07-17 17:03:05,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:03:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:03:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:03:05,433 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:03:05,433 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:03:05,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:03:05,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:03:05 BoogieIcfgContainer [2020-07-17 17:03:05,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:03:05,484 INFO L168 Benchmark]: Toolchain (without parser) took 1965.47 ms. Allocated memory was 141.0 MB in the beginning and 233.3 MB in the end (delta: 92.3 MB). Free memory was 105.8 MB in the beginning and 201.1 MB in the end (delta: -95.3 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:05,486 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 17:03:05,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.47 ms. Allocated memory is still 141.0 MB. Free memory was 105.4 MB in the beginning and 94.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:05,488 INFO L168 Benchmark]: Boogie Preprocessor took 137.57 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 94.3 MB in the beginning and 180.4 MB in the end (delta: -86.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:05,489 INFO L168 Benchmark]: RCFGBuilder took 440.14 ms. Allocated memory is still 203.4 MB. Free memory was 180.4 MB in the beginning and 154.4 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:05,490 INFO L168 Benchmark]: TraceAbstraction took 1091.26 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 153.8 MB in the beginning and 201.1 MB in the end (delta: -47.4 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:05,494 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 141.0 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.47 ms. Allocated memory is still 141.0 MB. Free memory was 105.4 MB in the beginning and 94.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.57 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 94.3 MB in the beginning and 180.4 MB in the end (delta: -86.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 440.14 ms. Allocated memory is still 203.4 MB. Free memory was 180.4 MB in the beginning and 154.4 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1091.26 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 153.8 MB in the beginning and 201.1 MB in the end (delta: -47.4 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 29. Possible FailurePath: [L68] double x = 0.0 / 0.0; [L70] CALL, EXPR trunc_double(x) VAL [\old(x)=8589934599] [L18] int signbit; VAL [\old(x)=8589934599, x=8589934599] [L19] int msw; VAL [\old(x)=8589934599, x=8589934599] [L20] unsigned int lsw; VAL [\old(x)=8589934599, x=8589934599] [L21] int exponent_less_1023; VAL [\old(x)=8589934599, x=8589934599] [L23] ieee_double_shape_type ew_u; VAL [\old(x)=8589934599, ew_u={2:0}, x=8589934599] [L24] ew_u.value = (x) VAL [\old(x)=8589934599, ew_u={2:0}, x=8589934599] [L25] EXPR ew_u.parts.msw VAL [\old(x)=8589934599, ew_u={2:0}, ew_u.parts.msw=8589934591, x=8589934599] [L25] (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=8589934594, \old(x)=8589934599, ew_u={2:0}, ew_u.parts.msw=8589934591, msw=-1, x=8589934599] [L26] EXPR ew_u.parts.lsw VAL [\old(x)=8589934599, ew_u={2:0}, ew_u.parts.lsw=8589934596, msw=-1, x=8589934599] [L26] (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=8589934598, \old(x)=8589934599, ew_u={2:0}, ew_u.parts.lsw=8589934596, lsw=4, msw=-1, x=8589934599] [L28] signbit = msw & 0x80000000 VAL [\old(x)=8589934599, lsw=4, msw=-1, signbit=-2, x=8589934599] [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=8589934599, exponent_less_1023=1024, lsw=4, msw=-1, signbit=-2, x=8589934599] [L30] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=8589934599, exponent_less_1023=1024, lsw=4, msw=-1, signbit=-2, x=8589934599] [L47] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=8589934599, exponent_less_1023=1024, lsw=4, msw=-1, signbit=-2, x=8589934599] [L48] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=8589934599, exponent_less_1023=1024, lsw=4, msw=-1, signbit=-2, x=8589934599] [L49] return x + x; VAL [\old(x)=8589934599, exponent_less_1023=1024, lsw=4, msw=-1, signbit=-2, x=8589934599] [L70] RET, EXPR trunc_double(x) VAL [trunc_double(x)=8589934595, x=8589934599] [L70] double res = trunc_double(x); VAL [res=8589934595, trunc_double(x)=8589934595, x=8589934599] [L73] CALL, EXPR isnan_double(res) VAL [\old(x)=8589934595] [L15] return x != x; VAL [\old(x)=8589934595, \result=0, x=8589934595] [L73] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=8589934595, x=8589934599] [L73] COND TRUE !isnan_double(res) VAL [isnan_double(res)=0, res=8589934595, x=8589934599] [L74] __VERIFIER_error() VAL [res=8589934595, x=8589934599] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 94 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: 94 SDtfs, 19 SDslu, 54 SDs, 0 SdLazy, 113 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred 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, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1782 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...