java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 22:13:34,739 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 22:13:34,741 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 22:13:34,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 22:13:34,755 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 22:13:34,756 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 22:13:34,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 22:13:34,759 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 22:13:34,761 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 22:13:34,761 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 22:13:34,762 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 22:13:34,763 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 22:13:34,763 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 22:13:34,764 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 22:13:34,766 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 22:13:34,766 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 22:13:34,767 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 22:13:34,769 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 22:13:34,771 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 22:13:34,773 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 22:13:34,774 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 22:13:34,778 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 22:13:34,783 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 22:13:34,783 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 22:13:34,784 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 22:13:34,784 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 22:13:34,785 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 22:13:34,786 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 22:13:34,790 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 22:13:34,791 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 22:13:34,791 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 22:13:34,792 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 22:13:34,792 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 22:13:34,792 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 22:13:34,793 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 22:13:34,794 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 22:13:34,794 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 22:13:34,817 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 22:13:34,817 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 22:13:34,818 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 22:13:34,818 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 22:13:34,818 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 22:13:34,819 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 22:13:34,819 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 22:13:34,819 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 22:13:34,819 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 22:13:34,819 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 22:13:34,820 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 22:13:34,820 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 22:13:34,820 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 22:13:34,821 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 22:13:34,821 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 22:13:34,821 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 22:13:34,821 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 22:13:34,821 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 22:13:34,821 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 22:13:34,822 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 22:13:34,822 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 22:13:34,822 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 22:13:34,822 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 22:13:34,822 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 22:13:34,823 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 22:13:34,823 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 22:13:34,823 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 22:13:34,823 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 22:13:34,823 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 22:13:34,824 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 22:13:34,824 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 22:13:34,824 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 22:13:34,824 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 22:13:34,824 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 22:13:34,825 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 22:13:34,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 22:13:34,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 22:13:34,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 22:13:34,888 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 22:13:34,888 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 22:13:34,889 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-11-07 22:13:34,947 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e56edb821/80eab69753e9491890ae2bee6e691202/FLAG5e3d38a18 [2018-11-07 22:13:35,386 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 22:13:35,387 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-11-07 22:13:35,392 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e56edb821/80eab69753e9491890ae2bee6e691202/FLAG5e3d38a18 [2018-11-07 22:13:35,408 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e56edb821/80eab69753e9491890ae2bee6e691202 [2018-11-07 22:13:35,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 22:13:35,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 22:13:35,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 22:13:35,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 22:13:35,427 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 22:13:35,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:13:35" (1/1) ... [2018-11-07 22:13:35,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e732a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35, skipping insertion in model container [2018-11-07 22:13:35,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:13:35" (1/1) ... [2018-11-07 22:13:35,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 22:13:35,467 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 22:13:35,704 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:13:35,710 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 22:13:35,732 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:13:35,749 INFO L193 MainTranslator]: Completed translation [2018-11-07 22:13:35,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35 WrapperNode [2018-11-07 22:13:35,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 22:13:35,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 22:13:35,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 22:13:35,750 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 22:13:35,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35" (1/1) ... [2018-11-07 22:13:35,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35" (1/1) ... [2018-11-07 22:13:35,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 22:13:35,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 22:13:35,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 22:13:35,768 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 22:13:35,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35" (1/1) ... [2018-11-07 22:13:35,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35" (1/1) ... [2018-11-07 22:13:35,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35" (1/1) ... [2018-11-07 22:13:35,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35" (1/1) ... [2018-11-07 22:13:35,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35" (1/1) ... [2018-11-07 22:13:35,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35" (1/1) ... [2018-11-07 22:13:35,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35" (1/1) ... [2018-11-07 22:13:35,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 22:13:35,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 22:13:35,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 22:13:35,787 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 22:13:35,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35" (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 [2018-11-07 22:13:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 22:13:35,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 22:13:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 22:13:35,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 22:13:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 22:13:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 22:13:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 22:13:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 22:13:36,194 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 22:13:36,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:13:36 BoogieIcfgContainer [2018-11-07 22:13:36,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 22:13:36,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 22:13:36,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 22:13:36,200 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 22:13:36,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:13:35" (1/3) ... [2018-11-07 22:13:36,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329a373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:13:36, skipping insertion in model container [2018-11-07 22:13:36,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:13:35" (2/3) ... [2018-11-07 22:13:36,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329a373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:13:36, skipping insertion in model container [2018-11-07 22:13:36,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:13:36" (3/3) ... [2018-11-07 22:13:36,203 INFO L112 eAbstractionObserver]: Analyzing ICFG bhmr2007_true-unreach-call_true-termination.c.i [2018-11-07 22:13:36,215 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 22:13:36,223 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 22:13:36,242 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 22:13:36,280 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 22:13:36,280 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 22:13:36,280 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 22:13:36,280 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 22:13:36,281 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 22:13:36,281 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 22:13:36,281 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 22:13:36,281 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 22:13:36,310 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-07 22:13:36,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-07 22:13:36,317 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:13:36,318 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:13:36,320 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:13:36,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:13:36,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1421497933, now seen corresponding path program 1 times [2018-11-07 22:13:36,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:13:36,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:13:36,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:13:36,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:13:36,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:13:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:13:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:13:36,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:13:36,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 22:13:36,443 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:13:36,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 22:13:36,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 22:13:36,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 22:13:36,461 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-07 22:13:36,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:13:36,482 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-11-07 22:13:36,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 22:13:36,483 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-07 22:13:36,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:13:36,493 INFO L225 Difference]: With dead ends: 34 [2018-11-07 22:13:36,493 INFO L226 Difference]: Without dead ends: 15 [2018-11-07 22:13:36,497 INFO L604 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 [2018-11-07 22:13:36,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-07 22:13:36,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-07 22:13:36,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-07 22:13:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-11-07 22:13:36,537 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2018-11-07 22:13:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:13:36,537 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-07 22:13:36,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 22:13:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-11-07 22:13:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-07 22:13:36,539 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:13:36,539 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:13:36,539 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:13:36,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:13:36,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1574385422, now seen corresponding path program 1 times [2018-11-07 22:13:36,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:13:36,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:13:36,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:13:36,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:13:36,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:13:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:13:36,876 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-11-07 22:13:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:13:37,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:13:37,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 22:13:37,170 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:13:37,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 22:13:37,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 22:13:37,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-07 22:13:37,172 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2018-11-07 22:13:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:13:37,441 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-07 22:13:37,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 22:13:37,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-11-07 22:13:37,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:13:37,446 INFO L225 Difference]: With dead ends: 23 [2018-11-07 22:13:37,446 INFO L226 Difference]: Without dead ends: 18 [2018-11-07 22:13:37,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 22:13:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-07 22:13:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-07 22:13:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-07 22:13:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-07 22:13:37,453 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2018-11-07 22:13:37,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:13:37,454 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-07 22:13:37,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 22:13:37,454 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-07 22:13:37,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-07 22:13:37,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:13:37,455 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:13:37,456 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:13:37,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:13:37,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1592010396, now seen corresponding path program 1 times [2018-11-07 22:13:37,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:13:37,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:13:37,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:13:37,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:13:37,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:13:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:13:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:13:37,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:13:37,981 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 22:13:37,982 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-11-07 22:13:37,984 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [21], [25], [32], [35], [37], [43], [44], [45], [47] [2018-11-07 22:13:38,015 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 22:13:38,016 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 22:13:38,274 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 22:13:38,275 INFO L272 AbstractInterpreter]: Visited 15 different actions 78 times. Merged at 5 different actions 35 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-11-07 22:13:38,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:13:38,289 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 22:13:38,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:13:38,289 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 22:13:38,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:13:38,301 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 22:13:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:13:38,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 22:13:38,652 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 22:13:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:13:38,839 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 22:13:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:13:39,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 22:13:39,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2018-11-07 22:13:39,210 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 22:13:39,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 22:13:39,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 22:13:39,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-11-07 22:13:39,212 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2018-11-07 22:13:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:13:39,657 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2018-11-07 22:13:39,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 22:13:39,659 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2018-11-07 22:13:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:13:39,660 INFO L225 Difference]: With dead ends: 32 [2018-11-07 22:13:39,661 INFO L226 Difference]: Without dead ends: 26 [2018-11-07 22:13:39,662 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2018-11-07 22:13:39,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-07 22:13:39,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-07 22:13:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-07 22:13:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-07 22:13:39,667 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2018-11-07 22:13:39,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:13:39,668 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-07 22:13:39,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 22:13:39,668 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-11-07 22:13:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 22:13:39,669 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:13:39,669 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:13:39,669 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:13:39,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:13:39,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2103962116, now seen corresponding path program 1 times [2018-11-07 22:13:39,670 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:13:39,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:13:39,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:13:39,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:13:39,672 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:13:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:13:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 22:13:39,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:13:39,949 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 22:13:39,949 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-11-07 22:13:39,949 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [21], [23], [25], [32], [35], [37], [43], [44], [45], [47] [2018-11-07 22:13:39,951 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 22:13:39,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 22:13:40,075 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 22:13:40,075 INFO L272 AbstractInterpreter]: Visited 16 different actions 103 times. Merged at 6 different actions 47 times. Widened at 1 different actions 3 times. Found 10 fixpoints after 2 different actions. Largest state had 6 variables. [2018-11-07 22:13:40,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:13:40,084 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 22:13:40,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:13:40,084 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 22:13:40,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:13:40,094 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 22:13:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:13:40,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 22:13:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:13:40,483 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 22:13:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 22:13:40,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 22:13:40,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 22 [2018-11-07 22:13:40,714 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 22:13:40,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 22:13:40,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 22:13:40,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2018-11-07 22:13:40,716 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 17 states. [2018-11-07 22:13:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:13:41,548 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-11-07 22:13:41,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 22:13:41,548 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2018-11-07 22:13:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:13:41,549 INFO L225 Difference]: With dead ends: 34 [2018-11-07 22:13:41,549 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 22:13:41,552 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 22:13:41,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 22:13:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 22:13:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 22:13:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 22:13:41,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-11-07 22:13:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:13:41,553 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 22:13:41,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 22:13:41,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 22:13:41,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 22:13:41,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 22:13:41,676 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-07 22:13:41,677 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:13:41,677 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:13:41,677 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 22:13:41,677 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 22:13:41,677 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 22:13:41,678 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 26) no Hoare annotation was computed. [2018-11-07 22:13:41,678 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2018-11-07 22:13:41,678 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-07 22:13:41,678 INFO L425 ceAbstractionStarter]: For program point L15-2(lines 15 21) no Hoare annotation was computed. [2018-11-07 22:13:41,678 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 26) no Hoare annotation was computed. [2018-11-07 22:13:41,678 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 26) the Hoare annotation is: true [2018-11-07 22:13:41,678 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-07 22:13:41,678 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 23) no Hoare annotation was computed. [2018-11-07 22:13:41,679 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse0 (* 3 main_~n~0)))) [2018-11-07 22:13:41,679 INFO L421 ceAbstractionStarter]: At program point L14-4(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~n~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-11-07 22:13:41,679 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-07 22:13:41,679 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-07 22:13:41,679 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-07 22:13:41,679 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-07 22:13:41,680 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-07 22:13:41,680 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-07 22:13:41,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:13:41 BoogieIcfgContainer [2018-11-07 22:13:41,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 22:13:41,692 INFO L168 Benchmark]: Toolchain (without parser) took 6271.12 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -430.5 MB). Peak memory consumption was 285.7 MB. Max. memory is 7.1 GB. [2018-11-07 22:13:41,693 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 22:13:41,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-07 22:13:41,695 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 22:13:41,695 INFO L168 Benchmark]: Boogie Preprocessor took 18.76 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 22:13:41,696 INFO L168 Benchmark]: RCFGBuilder took 408.93 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -765.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2018-11-07 22:13:41,697 INFO L168 Benchmark]: TraceAbstraction took 5494.56 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 324.6 MB). Peak memory consumption was 324.6 MB. Max. memory is 7.1 GB. [2018-11-07 22:13:41,703 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 326.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 17.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.76 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 408.93 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -765.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5494.56 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 324.6 MB). Peak memory consumption was 324.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (a + b <= 3 * i && 3 * i <= a + b) && a + b <= 3 * n - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 5.4s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 25 SDslu, 182 SDs, 0 SdLazy, 272 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 42 HoareAnnotationTreeSize, 12 FomulaSimplifications, 97 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 145 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 18682 SizeOfPredicates, 8 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 4/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...