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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/float-benchs/inv_Newton-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:35:31,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:35:31,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:35:31,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:35:31,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:35:31,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:35:31,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:35:31,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:35:31,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:35:31,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:35:31,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:35:31,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:35:31,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:35:31,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:35:31,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:35:31,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:35:31,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:35:31,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:35:31,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:35:31,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:35:31,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:35:31,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:35:31,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:35:31,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:35:31,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:35:31,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:35:31,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:35:31,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:35:31,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:35:31,735 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:35:31,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:35:31,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:35:31,736 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:35:31,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:35:31,737 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:35:31,737 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:35:31,738 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:35:31,738 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:35:31,738 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:35:31,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:35:31,739 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:35:31,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:35:31,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:35:31,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:35:31,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:35:31,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:35:31,740 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:35:31,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:35:31,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:35:31,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:35:31,742 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:35:31,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:35:31,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:35:31,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:35:31,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:35:31,743 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:35:31,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:35:31,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:35:31,744 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:35:31,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:35:31,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:35:31,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:35:31,812 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:35:31,812 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:35:31,813 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_Newton-1.c [2019-09-10 01:35:31,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/192ba779b/b15c90f9814340a792d533731d87f2fe/FLAG7227c6cc0 [2019-09-10 01:35:32,224 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:35:32,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_Newton-1.c [2019-09-10 01:35:32,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/192ba779b/b15c90f9814340a792d533731d87f2fe/FLAG7227c6cc0 [2019-09-10 01:35:32,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/192ba779b/b15c90f9814340a792d533731d87f2fe [2019-09-10 01:35:32,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:35:32,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:35:32,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:35:32,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:35:32,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:35:32,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:35:32" (1/1) ... [2019-09-10 01:35:32,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d365615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:32, skipping insertion in model container [2019-09-10 01:35:32,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:35:32" (1/1) ... [2019-09-10 01:35:32,640 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:35:32,658 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:35:32,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:35:32,805 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:35:32,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:35:32,938 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:35:32,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:32 WrapperNode [2019-09-10 01:35:32,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:35:32,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:35:32,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:35:32,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:35:32,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:32" (1/1) ... [2019-09-10 01:35:32,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:32" (1/1) ... [2019-09-10 01:35:32,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:32" (1/1) ... [2019-09-10 01:35:32,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:32" (1/1) ... [2019-09-10 01:35:32,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:32" (1/1) ... [2019-09-10 01:35:33,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:32" (1/1) ... [2019-09-10 01:35:33,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:32" (1/1) ... [2019-09-10 01:35:33,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:35:33,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:35:33,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:35:33,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:35:33,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:32" (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 [2019-09-10 01:35:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:35:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:35:33,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:35:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure inv [2019-09-10 01:35:33,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:35:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:35:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-10 01:35:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:35:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:35:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure inv [2019-09-10 01:35:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:35:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:35:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:35:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:35:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:35:33,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:35:33,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:35:33,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:35:33,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:35:33,420 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:35:33,421 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-10 01:35:33,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:35:33 BoogieIcfgContainer [2019-09-10 01:35:33,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:35:33,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:35:33,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:35:33,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:35:33,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:35:32" (1/3) ... [2019-09-10 01:35:33,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:35:33, skipping insertion in model container [2019-09-10 01:35:33,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:35:32" (2/3) ... [2019-09-10 01:35:33,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:35:33, skipping insertion in model container [2019-09-10 01:35:33,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:35:33" (3/3) ... [2019-09-10 01:35:33,432 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2019-09-10 01:35:33,443 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:35:33,451 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:35:33,470 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:35:33,519 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:35:33,519 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:35:33,520 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:35:33,520 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:35:33,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:35:33,520 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:35:33,520 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:35:33,520 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:35:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-09-10 01:35:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:35:33,566 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:35:33,568 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:35:33,570 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:35:33,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:35:33,580 INFO L82 PathProgramCache]: Analyzing trace with hash 940128396, now seen corresponding path program 1 times [2019-09-10 01:35:33,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:35:33,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:33,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:33,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:33,637 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:35:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:35:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:35:33,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:35:33,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:35:33,851 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:35:33,854 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:35:33,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:35:33,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:35:33,869 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-09-10 01:35:33,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:35:33,888 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-09-10 01:35:33,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:35:33,890 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-10 01:35:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:35:33,899 INFO L225 Difference]: With dead ends: 25 [2019-09-10 01:35:33,900 INFO L226 Difference]: Without dead ends: 18 [2019-09-10 01:35:33,901 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:35:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-10 01:35:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-10 01:35:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-10 01:35:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-09-10 01:35:33,937 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 17 [2019-09-10 01:35:33,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:35:33,937 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-09-10 01:35:33,937 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:35:33,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-09-10 01:35:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:35:33,938 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:35:33,938 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:35:33,939 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:35:33,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:35:33,939 INFO L82 PathProgramCache]: Analyzing trace with hash -419988344, now seen corresponding path program 1 times [2019-09-10 01:35:33,940 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:35:33,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:33,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:33,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:33,941 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:35:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:35:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:35:34,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:35:34,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:35:34,066 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:35:34,067 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:35:34,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:35:34,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:35:34,068 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2019-09-10 01:35:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:35:34,082 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-09-10 01:35:34,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:35:34,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-09-10 01:35:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:35:34,085 INFO L225 Difference]: With dead ends: 19 [2019-09-10 01:35:34,085 INFO L226 Difference]: Without dead ends: 19 [2019-09-10 01:35:34,086 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:35:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-10 01:35:34,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-10 01:35:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-10 01:35:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-09-10 01:35:34,093 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2019-09-10 01:35:34,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:35:34,093 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-09-10 01:35:34,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:35:34,093 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-09-10 01:35:34,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:35:34,094 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:35:34,094 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:35:34,094 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:35:34,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:35:34,095 INFO L82 PathProgramCache]: Analyzing trace with hash -2109082777, now seen corresponding path program 1 times [2019-09-10 01:35:34,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:35:34,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:34,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:34,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:35:34,097 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:35:34,116 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:35:34,117 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:35:34,117 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:35:34,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:35:34,134 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:35:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Exception during sending of exit command (exit): Stream closed [2019-09-10 01:35:34,166 INFO L285 seRefinementStrategy]: Strategy TaipanRefinementStrategy was unsuccessful and could not determine trace feasibility. [2019-09-10 01:35:34,167 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:35:34,187 WARN L226 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-09-10 01:35:34,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:35:34 BoogieIcfgContainer [2019-09-10 01:35:34,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:35:34,191 INFO L168 Benchmark]: Toolchain (without parser) took 1569.21 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 93.0 MB in the beginning and 125.3 MB in the end (delta: -32.3 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:34,191 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory is still 110.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:35:34,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.53 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 93.0 MB in the beginning and 179.0 MB in the end (delta: -86.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:34,193 INFO L168 Benchmark]: Boogie Preprocessor took 72.61 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 176.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:34,194 INFO L168 Benchmark]: RCFGBuilder took 409.99 ms. Allocated memory is still 201.9 MB. Free memory was 176.1 MB in the beginning and 160.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:34,195 INFO L168 Benchmark]: TraceAbstraction took 763.65 ms. Allocated memory is still 201.9 MB. Free memory was 160.4 MB in the beginning and 125.3 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:35:34,199 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory is still 110.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.53 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 93.0 MB in the beginning and 179.0 MB in the end (delta: -86.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.61 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 176.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.99 ms. Allocated memory is still 201.9 MB. Free memory was 176.1 MB in the beginning and 160.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 763.65 ms. Allocated memory is still 201.9 MB. Free memory was 160.4 MB in the beginning and 125.3 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L41] double a,r; [L43] a = __VERIFIER_nondet_double() [L46] CALL, EXPR inv(a) [L21] double xi, xsi, temp; [L22] signed int cond, exp; [L23] union double_int A_u, xi_u; [L24] A_u.d = A [L25] EXPR A_u.i [L25] exp = (signed int) ((A_u.i & 0x7FF0000000000000) >> 52) - 1023 [L26] xi_u.d = 1 [L27] xi_u.i = (((long long)(1023-exp)) << 52) [L28] EXPR xi_u.d [L28] xi = xi_u.d [L29] cond = 1 [L30] COND TRUE \read(cond) [L31] xsi = 2*xi-A*xi*xi [L32] temp = xsi-xi [L33] cond = ((temp > 1e-10) || (temp < -1e-10)) [L34] xi = xsi [L30] COND FALSE !(\read(cond)) [L36] return xi; [L36] return xi; [L36] return xi; [L46] RET, EXPR inv(a) [L46] r = inv(a) [L48] CALL __VERIFIER_assert(r >= 0 && r <= 0.06) [L11] COND TRUE !(cond) [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. UNKNOWN Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 15 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 544 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...