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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 10:50:07,916 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 10:50:07,917 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 10:50:07,929 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 10:50:07,929 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 10:50:07,930 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 10:50:07,931 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 10:50:07,933 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 10:50:07,935 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 10:50:07,935 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 10:50:07,936 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 10:50:07,937 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 10:50:07,937 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 10:50:07,938 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 10:50:07,939 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 10:50:07,940 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 10:50:07,941 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 10:50:07,943 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 10:50:07,945 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 10:50:07,946 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 10:50:07,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 10:50:07,949 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 10:50:07,951 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 10:50:07,951 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 10:50:07,952 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 10:50:07,953 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 10:50:07,954 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 10:50:07,955 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 10:50:07,955 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 10:50:07,957 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 10:50:07,957 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 10:50:07,958 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 10:50:07,958 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 10:50:07,958 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 10:50:07,959 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 10:50:07,960 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 10:50:07,960 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-08-07 10:50:07,975 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 10:50:07,975 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 10:50:07,976 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 10:50:07,976 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 10:50:07,978 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 10:50:07,978 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 10:50:07,979 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 10:50:07,979 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 10:50:07,979 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 10:50:07,980 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 10:50:07,980 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 10:50:07,981 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 10:50:07,981 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 10:50:07,981 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 10:50:07,981 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 10:50:07,982 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 10:50:07,983 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 10:50:07,983 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 10:50:07,983 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 10:50:07,983 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 10:50:07,983 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 10:50:07,983 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 10:50:07,984 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 10:50:07,984 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 10:50:07,984 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 10:50:07,984 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 10:50:07,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 10:50:07,986 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 10:50:07,986 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 10:50:07,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 10:50:07,986 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 10:50:07,987 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 10:50:07,987 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 10:50:08,047 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 10:50:08,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 10:50:08,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 10:50:08,068 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 10:50:08,069 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 10:50:08,070 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-08-07 10:50:08,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a74b2f71/a6c916e8b6e84b58b53998a800fdcf8f/FLAGd0cbf06fb [2018-08-07 10:50:08,563 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 10:50:08,563 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-08-07 10:50:08,569 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a74b2f71/a6c916e8b6e84b58b53998a800fdcf8f/FLAGd0cbf06fb [2018-08-07 10:50:08,584 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a74b2f71/a6c916e8b6e84b58b53998a800fdcf8f [2018-08-07 10:50:08,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 10:50:08,601 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 10:50:08,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 10:50:08,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 10:50:08,613 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 10:50:08,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 10:50:08" (1/1) ... [2018-08-07 10:50:08,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749a9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08, skipping insertion in model container [2018-08-07 10:50:08,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 10:50:08" (1/1) ... [2018-08-07 10:50:08,798 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 10:50:08,835 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 10:50:08,851 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 10:50:08,860 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 10:50:08,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08 WrapperNode [2018-08-07 10:50:08,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 10:50:08,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 10:50:08,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 10:50:08,877 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 10:50:08,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08" (1/1) ... [2018-08-07 10:50:08,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08" (1/1) ... [2018-08-07 10:50:08,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 10:50:08,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 10:50:08,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 10:50:08,899 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 10:50:08,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08" (1/1) ... [2018-08-07 10:50:08,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08" (1/1) ... [2018-08-07 10:50:08,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08" (1/1) ... [2018-08-07 10:50:08,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08" (1/1) ... [2018-08-07 10:50:08,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08" (1/1) ... [2018-08-07 10:50:08,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08" (1/1) ... [2018-08-07 10:50:08,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08" (1/1) ... [2018-08-07 10:50:08,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 10:50:08,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 10:50:08,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 10:50:08,926 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 10:50:08,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08" (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 [2018-08-07 10:50:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 10:50:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 10:50:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assert [2018-08-07 10:50:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assert [2018-08-07 10:50:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 10:50:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 10:50:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 10:50:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 10:50:09,231 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 10:50:09,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 10:50:09 BoogieIcfgContainer [2018-08-07 10:50:09,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 10:50:09,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 10:50:09,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 10:50:09,236 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 10:50:09,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 10:50:08" (1/3) ... [2018-08-07 10:50:09,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a150e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 10:50:09, skipping insertion in model container [2018-08-07 10:50:09,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:50:08" (2/3) ... [2018-08-07 10:50:09,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a150e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 10:50:09, skipping insertion in model container [2018-08-07 10:50:09,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 10:50:09" (3/3) ... [2018-08-07 10:50:09,240 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call1_true-termination.i [2018-08-07 10:50:09,249 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 10:50:09,257 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 10:50:09,305 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 10:50:09,306 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 10:50:09,306 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 10:50:09,306 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 10:50:09,306 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 10:50:09,306 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 10:50:09,307 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 10:50:09,307 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 10:50:09,307 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 10:50:09,324 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-08-07 10:50:09,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-08-07 10:50:09,329 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:50:09,330 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:50:09,331 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:50:09,337 INFO L82 PathProgramCache]: Analyzing trace with hash 314686959, now seen corresponding path program 1 times [2018-08-07 10:50:09,339 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:50:09,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:09,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:50:09,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:09,390 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:50:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:50:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:09,446 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 10:50:09,447 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-08-07 10:50:09,447 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 10:50:09,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-08-07 10:50:09,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-08-07 10:50:09,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-08-07 10:50:09,464 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-08-07 10:50:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:50:09,483 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-08-07 10:50:09,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-08-07 10:50:09,484 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-08-07 10:50:09,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:50:09,493 INFO L225 Difference]: With dead ends: 29 [2018-08-07 10:50:09,493 INFO L226 Difference]: Without dead ends: 12 [2018-08-07 10:50:09,497 INFO L603 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 [2018-08-07 10:50:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-08-07 10:50:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-08-07 10:50:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-08-07 10:50:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-08-07 10:50:09,541 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-08-07 10:50:09,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:50:09,541 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-08-07 10:50:09,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-08-07 10:50:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-08-07 10:50:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-08-07 10:50:09,544 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:50:09,545 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:50:09,545 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:50:09,548 INFO L82 PathProgramCache]: Analyzing trace with hash 926255632, now seen corresponding path program 1 times [2018-08-07 10:50:09,549 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:50:09,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:09,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:50:09,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:09,550 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:50:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:50:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:09,646 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 10:50:09,646 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 10:50:09,647 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 10:50:09,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 10:50:09,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 10:50:09,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 10:50:09,649 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-08-07 10:50:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:50:09,666 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-08-07 10:50:09,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 10:50:09,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-08-07 10:50:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:50:09,668 INFO L225 Difference]: With dead ends: 19 [2018-08-07 10:50:09,668 INFO L226 Difference]: Without dead ends: 14 [2018-08-07 10:50:09,670 INFO L603 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 [2018-08-07 10:50:09,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-08-07 10:50:09,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-08-07 10:50:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-08-07 10:50:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-08-07 10:50:09,674 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-08-07 10:50:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:50:09,675 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-08-07 10:50:09,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 10:50:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-08-07 10:50:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-08-07 10:50:09,676 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:50:09,676 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:50:09,676 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:50:09,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1883357962, now seen corresponding path program 1 times [2018-08-07 10:50:09,677 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:50:09,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:09,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:50:09,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:09,678 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:50:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:50:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:09,920 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:50:09,920 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 [2018-08-07 10:50:09,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:50:09,934 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 10:50:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:50:09,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:50:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:10,007 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:50:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:10,123 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:50:10,123 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 10:50:10,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:50:10,139 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 10:50:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:50:10,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:50:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:10,186 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:50:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:10,202 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 10:50:10,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 6 [2018-08-07 10:50:10,202 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 10:50:10,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 10:50:10,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 10:50:10,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-07 10:50:10,203 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2018-08-07 10:50:10,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:50:10,260 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-08-07 10:50:10,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 10:50:10,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-08-07 10:50:10,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:50:10,264 INFO L225 Difference]: With dead ends: 21 [2018-08-07 10:50:10,264 INFO L226 Difference]: Without dead ends: 16 [2018-08-07 10:50:10,265 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-07 10:50:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-08-07 10:50:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-08-07 10:50:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-08-07 10:50:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-08-07 10:50:10,269 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-08-07 10:50:10,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:50:10,269 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-08-07 10:50:10,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 10:50:10,270 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-08-07 10:50:10,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-08-07 10:50:10,270 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:50:10,270 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:50:10,271 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:50:10,271 INFO L82 PathProgramCache]: Analyzing trace with hash -387592612, now seen corresponding path program 2 times [2018-08-07 10:50:10,271 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:50:10,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:10,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:50:10,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:10,273 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:50:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:50:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:10,426 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:50:10,426 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 10:50:10,445 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-08-07 10:50:10,445 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-08-07 10:50:10,462 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-08-07 10:50:10,463 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-08-07 10:50:10,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:50:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:10,482 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:50:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:10,632 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:50:10,632 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 10:50:10,651 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-08-07 10:50:10,652 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-08-07 10:50:10,672 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-08-07 10:50:10,673 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-08-07 10:50:10,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:50:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:10,690 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:50:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:10,746 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 10:50:10,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 8 [2018-08-07 10:50:10,746 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 10:50:10,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 10:50:10,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 10:50:10,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-08-07 10:50:10,748 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-08-07 10:50:10,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:50:10,897 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-08-07 10:50:10,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-08-07 10:50:10,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-08-07 10:50:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:50:10,898 INFO L225 Difference]: With dead ends: 23 [2018-08-07 10:50:10,898 INFO L226 Difference]: Without dead ends: 18 [2018-08-07 10:50:10,900 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-08-07 10:50:10,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-08-07 10:50:10,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-08-07 10:50:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-08-07 10:50:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-08-07 10:50:10,905 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-08-07 10:50:10,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:50:10,906 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-08-07 10:50:10,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 10:50:10,906 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-08-07 10:50:10,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-08-07 10:50:10,907 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:50:10,907 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:50:10,908 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:50:10,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1771135422, now seen corresponding path program 3 times [2018-08-07 10:50:10,909 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:50:10,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:10,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-08-07 10:50:10,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:10,911 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:50:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:50:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:11,039 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:50:11,040 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 10:50:11,051 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-08-07 10:50:11,052 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-08-07 10:50:11,089 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-08-07 10:50:11,090 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-08-07 10:50:11,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:50:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:11,155 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:50:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:11,289 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:50:11,289 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 10:50:11,306 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-08-07 10:50:11,306 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-08-07 10:50:11,343 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-08-07 10:50:11,343 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-08-07 10:50:11,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:50:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:11,409 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:50:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:11,424 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 10:50:11,424 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 10 [2018-08-07 10:50:11,424 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 10:50:11,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 10:50:11,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 10:50:11,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-08-07 10:50:11,426 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-08-07 10:50:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:50:11,562 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-08-07 10:50:11,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 10:50:11,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-08-07 10:50:11,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:50:11,563 INFO L225 Difference]: With dead ends: 25 [2018-08-07 10:50:11,564 INFO L226 Difference]: Without dead ends: 20 [2018-08-07 10:50:11,564 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-08-07 10:50:11,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-08-07 10:50:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-08-07 10:50:11,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-08-07 10:50:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-08-07 10:50:11,569 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-08-07 10:50:11,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:50:11,569 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-08-07 10:50:11,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 10:50:11,569 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-08-07 10:50:11,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-08-07 10:50:11,570 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:50:11,570 INFO L376 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:50:11,571 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:50:11,571 INFO L82 PathProgramCache]: Analyzing trace with hash 84085928, now seen corresponding path program 4 times [2018-08-07 10:50:11,571 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:50:11,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:11,572 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-08-07 10:50:11,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:11,573 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:50:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:50:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:11,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:50:11,791 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 10:50:11,807 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-08-07 10:50:11,807 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-08-07 10:50:11,844 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-08-07 10:50:11,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-08-07 10:50:11,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:50:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:11,912 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:50:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:12,162 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:50:12,162 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 10:50:12,178 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-08-07 10:50:12,178 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-08-07 10:50:12,203 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-08-07 10:50:12,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-08-07 10:50:12,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:50:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:12,241 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:50:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:12,252 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 10:50:12,252 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 12 [2018-08-07 10:50:12,252 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 10:50:12,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-08-07 10:50:12,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-08-07 10:50:12,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-08-07 10:50:12,255 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2018-08-07 10:50:12,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:50:12,405 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-08-07 10:50:12,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 10:50:12,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-08-07 10:50:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:50:12,407 INFO L225 Difference]: With dead ends: 27 [2018-08-07 10:50:12,407 INFO L226 Difference]: Without dead ends: 22 [2018-08-07 10:50:12,408 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-08-07 10:50:12,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-08-07 10:50:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-08-07 10:50:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-08-07 10:50:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-08-07 10:50:12,412 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-08-07 10:50:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:50:12,412 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-08-07 10:50:12,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-08-07 10:50:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-08-07 10:50:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-08-07 10:50:12,413 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:50:12,413 INFO L376 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:50:12,413 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:50:12,414 INFO L82 PathProgramCache]: Analyzing trace with hash 540375438, now seen corresponding path program 5 times [2018-08-07 10:50:12,414 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:50:12,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:12,415 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-08-07 10:50:12,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:12,415 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:50:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:50:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:12,597 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:50:12,597 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 10:50:12,606 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-08-07 10:50:12,606 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-08-07 10:50:12,628 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-08-07 10:50:12,628 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-08-07 10:50:12,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:50:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:12,648 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:50:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:12,847 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:50:12,848 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 10:50:12,863 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-08-07 10:50:12,863 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-08-07 10:50:12,909 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-08-07 10:50:12,909 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-08-07 10:50:12,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:50:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:12,927 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:50:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:12,942 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 10:50:12,942 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 14 [2018-08-07 10:50:12,943 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 10:50:12,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-08-07 10:50:12,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-08-07 10:50:12,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-08-07 10:50:12,944 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2018-08-07 10:50:13,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:50:13,037 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-08-07 10:50:13,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 10:50:13,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-08-07 10:50:13,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:50:13,040 INFO L225 Difference]: With dead ends: 29 [2018-08-07 10:50:13,040 INFO L226 Difference]: Without dead ends: 24 [2018-08-07 10:50:13,041 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-08-07 10:50:13,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-08-07 10:50:13,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-08-07 10:50:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-08-07 10:50:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-08-07 10:50:13,045 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-08-07 10:50:13,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:50:13,046 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-08-07 10:50:13,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-08-07 10:50:13,046 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-08-07 10:50:13,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-08-07 10:50:13,047 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:50:13,047 INFO L376 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:50:13,047 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:50:13,047 INFO L82 PathProgramCache]: Analyzing trace with hash 947930356, now seen corresponding path program 6 times [2018-08-07 10:50:13,047 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:50:13,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:13,048 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-08-07 10:50:13,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:50:13,049 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:50:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:50:15,281 WARN L1010 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* 178956971 c_main_~y~0) 89478484))) (<= .cse0 (* 268435456 (div .cse0 268435456)))) is different from false [2018-08-07 10:50:17,322 WARN L1010 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* 178956971 c_main_~y~0) 178956968))) (<= .cse0 (* 536870912 (div .cse0 536870912)))) is different from false [2018-08-07 10:50:19,481 WARN L1010 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* 715827883 c_main_~y~0) 357913936))) (<= .cse0 (* 1073741824 (div .cse0 1073741824)))) is different from false [2018-08-07 10:50:26,157 WARN L170 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 9 [2018-08-07 10:50:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 30 not checked. [2018-08-07 10:50:32,582 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:50:32,583 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 10:50:32,590 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-08-07 10:50:32,590 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-08-07 10:50:32,614 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-08-07 10:50:32,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-08-07 10:50:32,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:50:41,235 WARN L170 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 19 [2018-08-07 10:50:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:50:41,369 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:51:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:51:30,094 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:51:30,094 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 10:51:30,109 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-08-07 10:51:30,109 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-08-07 10:51:30,185 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-08-07 10:51:30,185 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-08-07 10:51:30,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:51:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:51:33,853 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:51:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:51:36,064 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 10:51:36,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 26 [2018-08-07 10:51:36,064 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 10:51:36,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-08-07 10:51:36,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-08-07 10:51:36,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=380, Unknown=29, NotChecked=132, Total=650 [2018-08-07 10:51:36,065 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 19 states. [2018-08-07 10:51:36,859 WARN L170 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-08-07 10:51:36,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:51:36,879 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-08-07 10:51:36,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 10:51:36,879 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23 [2018-08-07 10:51:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:51:36,880 INFO L225 Difference]: With dead ends: 31 [2018-08-07 10:51:36,880 INFO L226 Difference]: Without dead ends: 26 [2018-08-07 10:51:36,881 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 69 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 83.1s TimeCoverageRelationStatistics Valid=115, Invalid=420, Unknown=29, NotChecked=138, Total=702 [2018-08-07 10:51:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-08-07 10:51:36,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-08-07 10:51:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-08-07 10:51:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-08-07 10:51:36,887 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-08-07 10:51:36,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:51:36,887 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-08-07 10:51:36,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-08-07 10:51:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-08-07 10:51:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-08-07 10:51:36,888 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:51:36,888 INFO L376 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:51:36,889 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:51:36,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1766182618, now seen corresponding path program 7 times [2018-08-07 10:51:36,889 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:51:36,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:51:36,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-08-07 10:51:36,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:51:36,890 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:51:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:51:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:51:37,099 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:51:37,100 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 10:51:37,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:51:37,109 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 10:51:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:51:37,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:51:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:51:37,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:51:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:51:37,571 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:51:37,571 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 10:51:37,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:51:37,587 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 10:51:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:51:37,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:51:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:51:37,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:51:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:51:37,708 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 10:51:37,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 16 [2018-08-07 10:51:37,708 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 10:51:37,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 10:51:37,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 10:51:37,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-08-07 10:51:37,710 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2018-08-07 10:51:37,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:51:37,782 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-08-07 10:51:37,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-08-07 10:51:37,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-08-07 10:51:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:51:37,786 INFO L225 Difference]: With dead ends: 26 [2018-08-07 10:51:37,787 INFO L226 Difference]: Without dead ends: 0 [2018-08-07 10:51:37,787 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-08-07 10:51:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-08-07 10:51:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-08-07 10:51:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-08-07 10:51:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-08-07 10:51:37,788 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-08-07 10:51:37,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:51:37,788 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-08-07 10:51:37,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 10:51:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-08-07 10:51:37,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-08-07 10:51:37,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-08-07 10:51:37,905 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-08-07 10:51:37,905 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-08-07 10:51:37,905 INFO L422 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-08-07 10:51:37,906 INFO L425 ceAbstractionStarter]: At program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-08-07 10:51:37,906 INFO L422 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-08-07 10:51:37,906 INFO L422 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-08-07 10:51:37,906 INFO L422 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-08-07 10:51:37,906 INFO L422 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-08-07 10:51:37,906 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-08-07 10:51:37,906 INFO L425 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-08-07 10:51:37,906 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-08-07 10:51:37,907 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-08-07 10:51:37,907 INFO L425 ceAbstractionStarter]: At program point mainENTRY(lines 8 16) the Hoare annotation is: true [2018-08-07 10:51:37,907 INFO L422 ceAbstractionStarter]: For program point mainEXIT(lines 8 16) no Hoare annotation was computed. [2018-08-07 10:51:37,907 INFO L422 ceAbstractionStarter]: For program point mainFINAL(lines 8 16) no Hoare annotation was computed. [2018-08-07 10:51:37,907 INFO L422 ceAbstractionStarter]: For program point L11-1(lines 11 14) no Hoare annotation was computed. [2018-08-07 10:51:37,907 INFO L418 ceAbstractionStarter]: At program point L11-3(lines 11 14) the Hoare annotation is: (or (and (exists ((v_main_~y~0_46 Int)) (and (= (* 4 v_main_~y~0_46) main_~y~0) (<= 1 v_main_~y~0_46) (<= v_main_~y~0_46 1))) (<= 2 main_~x~0) (<= main_~x~0 2)) (and (<= 5 main_~x~0) (exists ((v_main_~y~0_46 Int)) (and (<= 1 v_main_~y~0_46) (= main_~y~0 (* 32 v_main_~y~0_46)) (<= v_main_~y~0_46 1))) (<= main_~x~0 5)) (and (<= 1 main_~y~0) (<= main_~x~0 0) (<= main_~y~0 1) (<= 0 main_~x~0)) (and (<= main_~x~0 6) (exists ((v_main_~y~0_46 Int)) (and (<= 1 v_main_~y~0_46) (= main_~y~0 (* 64 v_main_~y~0_46)) (<= v_main_~y~0_46 1))) (<= 6 main_~x~0)) (and (<= main_~x~0 3) (exists ((v_main_~y~0_46 Int)) (and (<= 1 v_main_~y~0_46) (= main_~y~0 (* 8 v_main_~y~0_46)) (<= v_main_~y~0_46 1))) (<= 3 main_~x~0)) (and (<= 4 main_~x~0) (exists ((v_main_~y~0_46 Int)) (and (= main_~y~0 (* 16 v_main_~y~0_46)) (<= 1 v_main_~y~0_46) (<= v_main_~y~0_46 1))) (<= main_~x~0 4)) (and (exists ((v_main_~y~0_46 Int)) (and (<= 1 v_main_~y~0_46) (= (* 2 v_main_~y~0_46) main_~y~0) (<= v_main_~y~0_46 1))) (<= main_~x~0 1) (<= 1 main_~x~0))) [2018-08-07 10:51:37,907 INFO L418 ceAbstractionStarter]: At program point L11-4(lines 11 14) the Hoare annotation is: (exists ((v_main_~y~0_46 Int)) (and (<= 1 v_main_~y~0_46) (= main_~y~0 (* 64 v_main_~y~0_46)) (<= v_main_~y~0_46 1))) [2018-08-07 10:51:37,912 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,913 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,913 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,914 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,914 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,914 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,914 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,915 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,915 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,915 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,915 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,915 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,916 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,916 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,916 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,916 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,916 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,917 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,925 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,926 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,926 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,926 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,927 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,927 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,927 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,927 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,928 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,928 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,928 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,928 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,929 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,929 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,929 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,929 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,929 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,930 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 10:51:37 BoogieIcfgContainer [2018-08-07 10:51:37,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 10:51:37,934 INFO L168 Benchmark]: Toolchain (without parser) took 89334.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -326.1 MB). Peak memory consumption was 423.6 MB. Max. memory is 7.1 GB. [2018-08-07 10:51:37,935 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-08-07 10:51:37,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.96 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. [2018-08-07 10:51:37,936 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.71 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. [2018-08-07 10:51:37,937 INFO L168 Benchmark]: Boogie Preprocessor took 26.73 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. [2018-08-07 10:51:37,937 INFO L168 Benchmark]: RCFGBuilder took 306.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2018-08-07 10:51:37,938 INFO L168 Benchmark]: TraceAbstraction took 88700.29 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 474.3 MB). Peak memory consumption was 474.3 MB. Max. memory is 7.1 GB. [2018-08-07 10:51:37,943 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.96 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 21.71 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 26.73 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 306.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 88700.29 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 474.3 MB). Peak memory consumption was 474.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 11]: Loop Invariant [2018-08-07 10:51:37,955 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,955 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,956 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,956 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,956 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,956 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,957 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,957 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,957 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,957 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,958 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,958 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,958 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,958 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,958 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,959 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,959 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,959 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,961 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,962 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,962 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,962 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,962 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,963 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,963 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,963 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,963 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,964 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,964 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,964 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,964 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,965 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,965 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,965 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,965 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-08-07 10:51:37,965 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] Derived loop invariant: ((((((((\exists v_main_~y~0_46 : int :: (4 * v_main_~y~0_46 == y && 1 <= v_main_~y~0_46) && v_main_~y~0_46 <= 1) && 2 <= x) && x <= 2) || ((5 <= x && (\exists v_main_~y~0_46 : int :: (1 <= v_main_~y~0_46 && y == 32 * v_main_~y~0_46) && v_main_~y~0_46 <= 1)) && x <= 5)) || (((1 <= y && x <= 0) && y <= 1) && 0 <= x)) || ((x <= 6 && (\exists v_main_~y~0_46 : int :: (1 <= v_main_~y~0_46 && y == 64 * v_main_~y~0_46) && v_main_~y~0_46 <= 1)) && 6 <= x)) || ((x <= 3 && (\exists v_main_~y~0_46 : int :: (1 <= v_main_~y~0_46 && y == 8 * v_main_~y~0_46) && v_main_~y~0_46 <= 1)) && 3 <= x)) || ((4 <= x && (\exists v_main_~y~0_46 : int :: (y == 16 * v_main_~y~0_46 && 1 <= v_main_~y~0_46) && v_main_~y~0_46 <= 1)) && x <= 4)) || (((\exists v_main_~y~0_46 : int :: (1 <= v_main_~y~0_46 && 2 * v_main_~y~0_46 == y) && v_main_~y~0_46 <= 1) && x <= 1) && 1 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 88.6s OverallTime, 9 OverallIterations, 8 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 127 SDtfs, 2 SDslu, 524 SDs, 0 SdLazy, 296 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 577 GetRequests, 474 SyntacticMatches, 23 SemanticMatches, 80 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 85.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=8, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 23 NumberOfFragments, 152 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 85.6s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 649 ConstructedInterpolants, 30 QuantifiedInterpolants, 64069 SizeOfPredicates, 14 NumberOfNonLiveVariables, 686 ConjunctsInSsa, 160 ConjunctsInUnsatCore, 37 InterpolantComputations, 2 PerfectInterpolantSequences, 70/840 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/underapprox_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_10-51-37-973.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/underapprox_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_10-51-37-973.csv Received shutdown request...