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 0.1.23-3142e50-m [2018-09-10 10:13:21,499 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 10:13:21,501 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 10:13:21,513 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 10:13:21,514 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 10:13:21,515 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 10:13:21,516 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 10:13:21,518 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 10:13:21,519 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 10:13:21,520 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 10:13:21,521 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 10:13:21,521 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 10:13:21,522 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 10:13:21,523 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 10:13:21,524 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 10:13:21,525 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 10:13:21,526 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 10:13:21,528 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 10:13:21,529 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 10:13:21,531 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 10:13:21,532 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 10:13:21,533 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 10:13:21,535 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 10:13:21,535 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 10:13:21,536 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 10:13:21,536 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 10:13:21,537 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 10:13:21,538 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 10:13:21,539 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 10:13:21,540 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 10:13:21,540 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 10:13:21,541 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-10 10:13:21,543 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 [2018-09-10 10:13:21,557 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 10:13:21,558 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 10:13:21,559 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 10:13:21,559 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 10:13:21,559 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 10:13:21,559 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 10:13:21,559 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 10:13:21,560 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 10:13:21,560 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 10:13:21,560 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 10:13:21,560 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 10:13:21,561 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 10:13:21,561 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 10:13:21,561 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 10:13:21,561 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 10:13:21,561 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 10:13:21,562 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 10:13:21,562 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 10:13:21,562 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 10:13:21,562 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 10:13:21,562 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 10:13:21,563 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 10:13:21,563 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 10:13:21,563 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:13:21,563 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 10:13:21,563 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 10:13:21,564 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 10:13:21,564 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 10:13:21,564 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 10:13:21,564 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 10:13:21,565 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 10:13:21,565 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 10:13:21,565 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 10:13:21,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 10:13:21,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 10:13:21,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 10:13:21,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 10:13:21,653 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 10:13:21,654 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-09-10 10:13:22,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9266f5570/39c1a9f2282849eaa62cc167cb6bff12/FLAGa0473af91 [2018-09-10 10:13:22,174 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 10:13:22,175 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-09-10 10:13:22,180 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9266f5570/39c1a9f2282849eaa62cc167cb6bff12/FLAGa0473af91 [2018-09-10 10:13:22,202 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9266f5570/39c1a9f2282849eaa62cc167cb6bff12 [2018-09-10 10:13:22,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 10:13:22,220 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 10:13:22,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 10:13:22,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 10:13:22,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 10:13:22,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:13:22" (1/1) ... [2018-09-10 10:13:22,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c01a3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22, skipping insertion in model container [2018-09-10 10:13:22,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:13:22" (1/1) ... [2018-09-10 10:13:22,393 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 10:13:22,429 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:13:22,445 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 10:13:22,449 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:13:22,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22 WrapperNode [2018-09-10 10:13:22,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 10:13:22,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 10:13:22,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 10:13:22,464 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 10:13:22,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22" (1/1) ... [2018-09-10 10:13:22,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22" (1/1) ... [2018-09-10 10:13:22,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 10:13:22,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 10:13:22,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 10:13:22,487 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 10:13:22,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22" (1/1) ... [2018-09-10 10:13:22,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22" (1/1) ... [2018-09-10 10:13:22,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22" (1/1) ... [2018-09-10 10:13:22,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22" (1/1) ... [2018-09-10 10:13:22,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22" (1/1) ... [2018-09-10 10:13:22,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22" (1/1) ... [2018-09-10 10:13:22,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22" (1/1) ... [2018-09-10 10:13:22,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 10:13:22,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 10:13:22,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 10:13:22,515 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 10:13:22,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22" (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 [2018-09-10 10:13:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 10:13:22,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 10:13:22,593 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 [2018-09-10 10:13:22,594 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 [2018-09-10 10:13:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 10:13:22,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 10:13:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 10:13:22,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 10:13:23,017 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 10:13:23,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:13:23 BoogieIcfgContainer [2018-09-10 10:13:23,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 10:13:23,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 10:13:23,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 10:13:23,022 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 10:13:23,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:13:22" (1/3) ... [2018-09-10 10:13:23,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0b41c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:13:23, skipping insertion in model container [2018-09-10 10:13:23,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:22" (2/3) ... [2018-09-10 10:13:23,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0b41c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:13:23, skipping insertion in model container [2018-09-10 10:13:23,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:13:23" (3/3) ... [2018-09-10 10:13:23,026 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call1_true-termination.i [2018-09-10 10:13:23,036 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 10:13:23,044 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 10:13:23,091 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 10:13:23,092 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 10:13:23,092 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 10:13:23,092 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 10:13:23,092 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 10:13:23,092 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 10:13:23,092 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 10:13:23,093 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 10:13:23,093 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 10:13:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-09-10 10:13:23,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-10 10:13:23,117 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:23,118 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:23,119 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]=== [2018-09-10 10:13:23,125 INFO L82 PathProgramCache]: Analyzing trace with hash 314686959, now seen corresponding path program 1 times [2018-09-10 10:13:23,130 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:23,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:23,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:23,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:23,182 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:23,235 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:13:23,235 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-10 10:13:23,235 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:13:23,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-10 10:13:23,255 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-10 10:13:23,255 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-10 10:13:23,259 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-09-10 10:13:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:23,279 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-09-10 10:13:23,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-10 10:13:23,280 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-10 10:13:23,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:23,288 INFO L225 Difference]: With dead ends: 29 [2018-09-10 10:13:23,288 INFO L226 Difference]: Without dead ends: 12 [2018-09-10 10:13:23,292 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-10 10:13:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-10 10:13:23,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-10 10:13:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-10 10:13:23,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-10 10:13:23,327 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-10 10:13:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:23,328 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-10 10:13:23,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-10 10:13:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-10 10:13:23,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-10 10:13:23,329 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:23,329 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:23,329 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]=== [2018-09-10 10:13:23,330 INFO L82 PathProgramCache]: Analyzing trace with hash 926255632, now seen corresponding path program 1 times [2018-09-10 10:13:23,330 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:23,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:23,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:23,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:23,332 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:23,477 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:13:23,478 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 10:13:23,478 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:13:23,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:13:23,480 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:13:23,480 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:13:23,482 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-09-10 10:13:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:23,530 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-10 10:13:23,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:13:23,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-10 10:13:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:23,532 INFO L225 Difference]: With dead ends: 19 [2018-09-10 10:13:23,532 INFO L226 Difference]: Without dead ends: 14 [2018-09-10 10:13:23,533 INFO L604 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 [2018-09-10 10:13:23,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-10 10:13:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-10 10:13:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-10 10:13:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-10 10:13:23,538 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-09-10 10:13:23,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:23,539 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-10 10:13:23,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:13:23,539 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-10 10:13:23,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-10 10:13:23,540 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:23,540 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:23,540 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]=== [2018-09-10 10:13:23,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1883357962, now seen corresponding path program 1 times [2018-09-10 10:13:23,541 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:23,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:23,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:23,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:23,543 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:23,685 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:23,686 INFO L197 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 [2018-09-10 10:13:23,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:23,697 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:13:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:23,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:23,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:23,773 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:23,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:23,907 INFO L197 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 [2018-09-10 10:13:23,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:23,923 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:13:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:23,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:23,987 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (3)] Exception during sending of exit command (exit): Broken pipe [2018-09-10 10:13:24,014 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:13:24,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 6 [2018-09-10 10:13:24,015 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:13:24,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 10:13:24,015 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 10:13:24,016 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-10 10:13:24,016 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2018-09-10 10:13:24,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:24,059 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-10 10:13:24,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 10:13:24,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-09-10 10:13:24,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:24,062 INFO L225 Difference]: With dead ends: 21 [2018-09-10 10:13:24,062 INFO L226 Difference]: Without dead ends: 16 [2018-09-10 10:13:24,063 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-10 10:13:24,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-10 10:13:24,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-10 10:13:24,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-10 10:13:24,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-09-10 10:13:24,069 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-09-10 10:13:24,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:24,070 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-09-10 10:13:24,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 10:13:24,071 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-09-10 10:13:24,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-10 10:13:24,071 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:24,072 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:24,072 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]=== [2018-09-10 10:13:24,072 INFO L82 PathProgramCache]: Analyzing trace with hash -387592612, now seen corresponding path program 2 times [2018-09-10 10:13:24,073 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:24,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:24,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:24,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:24,074 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:24,232 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:24,232 INFO L197 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 [2018-09-10 10:13:24,253 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-10 10:13:24,254 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-10 10:13:24,269 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-10 10:13:24,270 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:24,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:24,350 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:24,563 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:24,563 INFO L197 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 [2018-09-10 10:13:24,579 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-10 10:13:24,579 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-10 10:13:24,599 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-10 10:13:24,599 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:24,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:24,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:24,662 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:13:24,663 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 8 [2018-09-10 10:13:24,663 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:13:24,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:13:24,664 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:13:24,664 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-09-10 10:13:24,664 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-09-10 10:13:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:24,712 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-09-10 10:13:24,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 10:13:24,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-09-10 10:13:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:24,714 INFO L225 Difference]: With dead ends: 23 [2018-09-10 10:13:24,714 INFO L226 Difference]: Without dead ends: 18 [2018-09-10 10:13:24,714 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-09-10 10:13:24,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-10 10:13:24,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-10 10:13:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-10 10:13:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-09-10 10:13:24,722 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-09-10 10:13:24,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:24,723 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-09-10 10:13:24,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:13:24,723 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-09-10 10:13:24,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-10 10:13:24,724 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:24,724 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:24,724 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]=== [2018-09-10 10:13:24,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1771135422, now seen corresponding path program 3 times [2018-09-10 10:13:24,725 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:24,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:24,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-10 10:13:24,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:24,726 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:24,884 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:24,885 INFO L197 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 [2018-09-10 10:13:24,900 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-10 10:13:24,900 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-10 10:13:24,936 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-10 10:13:24,937 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:24,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,189 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:25,189 INFO L197 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 [2018-09-10 10:13:25,204 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-10 10:13:25,204 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-10 10:13:25,243 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-10 10:13:25,244 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:25,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,276 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:13:25,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 10 [2018-09-10 10:13:25,276 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:13:25,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:13:25,277 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:13:25,278 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:13:25,278 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-09-10 10:13:25,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:25,384 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-10 10:13:25,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:13:25,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-09-10 10:13:25,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:25,386 INFO L225 Difference]: With dead ends: 25 [2018-09-10 10:13:25,386 INFO L226 Difference]: Without dead ends: 20 [2018-09-10 10:13:25,387 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:13:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-10 10:13:25,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-09-10 10:13:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-10 10:13:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-09-10 10:13:25,391 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-09-10 10:13:25,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:25,392 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-09-10 10:13:25,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:13:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-09-10 10:13:25,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-10 10:13:25,393 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:25,393 INFO L376 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:25,394 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]=== [2018-09-10 10:13:25,394 INFO L82 PathProgramCache]: Analyzing trace with hash 84085928, now seen corresponding path program 4 times [2018-09-10 10:13:25,394 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:25,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:25,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-10 10:13:25,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:25,396 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,616 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:25,616 INFO L197 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 [2018-09-10 10:13:25,630 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-10 10:13:25,630 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-10 10:13:25,671 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-10 10:13:25,672 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:25,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,743 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,984 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:25,984 INFO L197 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 [2018-09-10 10:13:26,001 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-10 10:13:26,001 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-10 10:13:26,024 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-10 10:13:26,024 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:26,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,048 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,060 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:13:26,061 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 12 [2018-09-10 10:13:26,061 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:13:26,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 10:13:26,062 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 10:13:26,063 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-10 10:13:26,063 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2018-09-10 10:13:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:26,208 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-09-10 10:13:26,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 10:13:26,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-09-10 10:13:26,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:26,210 INFO L225 Difference]: With dead ends: 27 [2018-09-10 10:13:26,210 INFO L226 Difference]: Without dead ends: 22 [2018-09-10 10:13:26,211 INFO L604 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 [2018-09-10 10:13:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-10 10:13:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-10 10:13:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-10 10:13:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-09-10 10:13:26,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-09-10 10:13:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:26,218 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-09-10 10:13:26,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 10:13:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-09-10 10:13:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-10 10:13:26,219 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:26,219 INFO L376 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:26,219 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]=== [2018-09-10 10:13:26,220 INFO L82 PathProgramCache]: Analyzing trace with hash 540375438, now seen corresponding path program 5 times [2018-09-10 10:13:26,220 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:26,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:26,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-10 10:13:26,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:26,221 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,326 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:26,326 INFO L197 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 [2018-09-10 10:13:26,337 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-10 10:13:26,337 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-10 10:13:26,360 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-10 10:13:26,360 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:26,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,376 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,586 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:26,587 INFO L197 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 [2018-09-10 10:13:26,603 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-10 10:13:26,603 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-10 10:13:26,645 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-10 10:13:26,646 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:26,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,668 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:13:26,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 14 [2018-09-10 10:13:26,682 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:13:26,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-10 10:13:26,683 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-10 10:13:26,683 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-09-10 10:13:26,683 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2018-09-10 10:13:26,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:26,775 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-10 10:13:26,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 10:13:26,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-09-10 10:13:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:26,779 INFO L225 Difference]: With dead ends: 29 [2018-09-10 10:13:26,779 INFO L226 Difference]: Without dead ends: 24 [2018-09-10 10:13:26,780 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-09-10 10:13:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-10 10:13:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-10 10:13:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-10 10:13:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-09-10 10:13:26,784 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-09-10 10:13:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:26,785 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-09-10 10:13:26,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-10 10:13:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-09-10 10:13:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-10 10:13:26,786 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:26,786 INFO L376 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:26,786 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]=== [2018-09-10 10:13:26,787 INFO L82 PathProgramCache]: Analyzing trace with hash 947930356, now seen corresponding path program 6 times [2018-09-10 10:13:26,787 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:26,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:26,788 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-10 10:13:26,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:26,788 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:29,063 WARN L1010 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* 178956971 c_main_~y~0) 89478484))) (<= .cse0 (* 268435456 (div .cse0 268435456)))) is different from false [2018-09-10 10:13:31,129 WARN L1010 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* 178956971 c_main_~y~0) 178956968))) (<= .cse0 (* 536870912 (div .cse0 536870912)))) is different from false [2018-09-10 10:13:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 18 refuted. 2 times theorem prover too weak. 0 trivial. 22 not checked. [2018-09-10 10:13:48,831 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:48,831 INFO L197 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 [2018-09-10 10:13:48,840 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-10 10:13:48,841 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-09-10 10:13:48,867 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-10 10:13:48,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:48,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:03,976 WARN L175 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 19 [2018-09-10 10:14:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:07,571 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:15:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:15:04,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:15:04,874 INFO L197 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 [2018-09-10 10:15:04,892 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-10 10:15:04,892 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-09-10 10:15:04,968 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-10 10:15:04,968 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:15:04,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:15:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:15:07,499 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:15:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (13)] Exception during sending of exit command (exit): Broken pipe [2018-09-10 10:15:14,786 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:15:14,786 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 26 [2018-09-10 10:15:14,787 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:15:14,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-10 10:15:14,788 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-10 10:15:14,788 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=412, Unknown=34, NotChecked=90, Total=650 [2018-09-10 10:15:14,789 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 19 states. [2018-09-10 10:15:15,344 WARN L175 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-10 10:15:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:15:15,369 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-09-10 10:15:15,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 10:15:15,370 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23 [2018-09-10 10:15:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:15:15,371 INFO L225 Difference]: With dead ends: 31 [2018-09-10 10:15:15,371 INFO L226 Difference]: Without dead ends: 26 [2018-09-10 10:15:15,371 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 69 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 107.8s TimeCoverageRelationStatistics Valid=120, Invalid=454, Unknown=34, NotChecked=94, Total=702 [2018-09-10 10:15:15,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-10 10:15:15,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-09-10 10:15:15,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-10 10:15:15,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-09-10 10:15:15,377 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-09-10 10:15:15,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:15:15,377 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-09-10 10:15:15,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-10 10:15:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-09-10 10:15:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-10 10:15:15,378 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:15:15,378 INFO L376 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:15:15,379 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]=== [2018-09-10 10:15:15,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1766182618, now seen corresponding path program 7 times [2018-09-10 10:15:15,379 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:15:15,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:15:15,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-10 10:15:15,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:15:15,380 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:15:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:15:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:15:15,693 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:15:15,693 INFO L197 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 [2018-09-10 10:15:15,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:15:15,701 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:15:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:15:15,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:15:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:15:15,784 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:15:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:15:16,009 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:15:16,009 INFO L197 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 [2018-09-10 10:15:16,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:15:16,024 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:15:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:15:16,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:15:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:15:16,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:15:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:15:16,130 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:15:16,130 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 16 [2018-09-10 10:15:16,130 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:15:16,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:15:16,131 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:15:16,131 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-09-10 10:15:16,131 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2018-09-10 10:15:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:15:16,305 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-09-10 10:15:16,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 10:15:16,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-09-10 10:15:16,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:15:16,309 INFO L225 Difference]: With dead ends: 26 [2018-09-10 10:15:16,309 INFO L226 Difference]: Without dead ends: 0 [2018-09-10 10:15:16,309 INFO L604 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 [2018-09-10 10:15:16,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-10 10:15:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-10 10:15:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-10 10:15:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-10 10:15:16,310 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-09-10 10:15:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:15:16,310 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-10 10:15:16,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:15:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-10 10:15:16,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-10 10:15:16,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-10 10:15:16,433 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-10 10:15:16,433 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-10 10:15:16,433 INFO L426 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-09-10 10:15:16,434 INFO L429 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 [2018-09-10 10:15:16,434 INFO L426 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. [2018-09-10 10:15:16,434 INFO L426 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. [2018-09-10 10:15:16,434 INFO L426 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-09-10 10:15:16,434 INFO L426 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-09-10 10:15:16,434 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-10 10:15:16,434 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-10 10:15:16,435 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-10 10:15:16,435 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-10 10:15:16,435 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 8 16) the Hoare annotation is: true [2018-09-10 10:15:16,435 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 8 16) no Hoare annotation was computed. [2018-09-10 10:15:16,435 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 8 16) no Hoare annotation was computed. [2018-09-10 10:15:16,435 INFO L426 ceAbstractionStarter]: For program point L11-1(lines 11 14) no Hoare annotation was computed. [2018-09-10 10:15:16,435 INFO L422 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))) [2018-09-10 10:15:16,436 INFO L422 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))) [2018-09-10 10:15:16,441 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,442 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,442 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,443 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,443 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,443 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,443 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,443 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,444 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,444 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,444 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,444 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,445 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,445 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,445 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,445 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,445 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,446 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,458 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,458 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,458 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,459 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,460 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,460 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,460 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,460 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,461 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,461 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,461 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,461 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,466 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,466 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,466 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,467 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,467 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,467 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 10:15:16 BoogieIcfgContainer [2018-09-10 10:15:16,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 10:15:16,474 INFO L168 Benchmark]: Toolchain (without parser) took 114256.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -283.6 MB). Peak memory consumption was 457.8 MB. Max. memory is 7.1 GB. [2018-09-10 10:15:16,475 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. [2018-09-10 10:15:16,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.31 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. [2018-09-10 10:15:16,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.26 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. [2018-09-10 10:15:16,476 INFO L168 Benchmark]: Boogie Preprocessor took 26.92 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. [2018-09-10 10:15:16,477 INFO L168 Benchmark]: RCFGBuilder took 503.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.1 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-09-10 10:15:16,478 INFO L168 Benchmark]: TraceAbstraction took 113453.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 499.0 MB). Peak memory consumption was 499.0 MB. Max. memory is 7.1 GB. [2018-09-10 10:15:16,481 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 242.31 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 23.26 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 26.92 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 503.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.1 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 113453.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 499.0 MB). Peak memory consumption was 499.0 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 [2018-09-10 10:15:16,491 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,492 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,492 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,492 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,492 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,492 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,493 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,493 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,493 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,493 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,493 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,494 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,494 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,494 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,494 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,494 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,494 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,495 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,497 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,497 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,497 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,497 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,497 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,498 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,498 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,498 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,498 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,498 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,499 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,499 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,499 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,499 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,499 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,499 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,500 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-09-10 10:15:16,500 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, 113.3s OverallTime, 9 OverallIterations, 8 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 127 SDtfs, 2 SDslu, 528 SDs, 0 SdLazy, 304 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 576 GetRequests, 474 SyntacticMatches, 22 SemanticMatches, 80 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 110.0s 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, 110.6s 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-0-2018-09-10_10-15-16-506.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-0-2018-09-10_10-15-16-506.csv Received shutdown request...