java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-20 21:41:10,614 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-20 21:41:10,616 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-20 21:41:10,628 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-20 21:41:10,629 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-20 21:41:10,630 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-20 21:41:10,633 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-20 21:41:10,639 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-20 21:41:10,640 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-20 21:41:10,643 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-20 21:41:10,643 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-20 21:41:10,644 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-20 21:41:10,644 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-20 21:41:10,645 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-20 21:41:10,648 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-20 21:41:10,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-20 21:41:10,650 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-20 21:41:10,651 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-20 21:41:10,653 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-20 21:41:10,654 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-20 21:41:10,655 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-20 21:41:10,665 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-20 21:41:10,667 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-20 21:41:10,681 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-20 21:41:10,705 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-20 21:41:10,705 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-20 21:41:10,709 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-20 21:41:10,709 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-20 21:41:10,709 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-20 21:41:10,709 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-20 21:41:10,710 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-20 21:41:10,710 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-20 21:41:10,710 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-20 21:41:10,710 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-20 21:41:10,710 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-20 21:41:10,711 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-20 21:41:10,711 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-20 21:41:10,711 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-20 21:41:10,712 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-20 21:41:10,714 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-20 21:41:10,714 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-20 21:41:10,715 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-20 21:41:10,715 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-20 21:41:10,715 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-20 21:41:10,715 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-20 21:41:10,715 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-20 21:41:10,716 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-20 21:41:10,716 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-20 21:41:10,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-20 21:41:10,716 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-20 21:41:10,716 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-20 21:41:10,717 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-20 21:41:10,717 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-20 21:41:10,717 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-20 21:41:10,717 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-20 21:41:10,717 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-20 21:41:10,717 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-20 21:41:10,719 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-20 21:41:10,719 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-20 21:41:10,770 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-20 21:41:10,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-20 21:41:10,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-20 21:41:10,792 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-20 21:41:10,792 INFO L276 PluginConnector]: CDTParser initialized [2018-07-20 21:41:10,793 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-07-20 21:41:11,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1697611b8/bdfc2698e3ba456e9bd17701ede3c406/FLAG18d119f7a [2018-07-20 21:41:11,267 INFO L276 CDTParser]: Found 1 translation units. [2018-07-20 21:41:11,267 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-07-20 21:41:11,274 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1697611b8/bdfc2698e3ba456e9bd17701ede3c406/FLAG18d119f7a [2018-07-20 21:41:11,288 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1697611b8/bdfc2698e3ba456e9bd17701ede3c406 [2018-07-20 21:41:11,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-20 21:41:11,306 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-20 21:41:11,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-20 21:41:11,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-20 21:41:11,318 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-20 21:41:11,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:41:11" (1/1) ... [2018-07-20 21:41:11,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9eae344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11, skipping insertion in model container [2018-07-20 21:41:11,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:41:11" (1/1) ... [2018-07-20 21:41:11,488 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-20 21:41:11,525 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-20 21:41:11,538 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-20 21:41:11,541 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-20 21:41:11,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11 WrapperNode [2018-07-20 21:41:11,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-20 21:41:11,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-20 21:41:11,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-20 21:41:11,553 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-20 21:41:11,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11" (1/1) ... [2018-07-20 21:41:11,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11" (1/1) ... [2018-07-20 21:41:11,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-20 21:41:11,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-20 21:41:11,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-20 21:41:11,570 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-20 21:41:11,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11" (1/1) ... [2018-07-20 21:41:11,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11" (1/1) ... [2018-07-20 21:41:11,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11" (1/1) ... [2018-07-20 21:41:11,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11" (1/1) ... [2018-07-20 21:41:11,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11" (1/1) ... [2018-07-20 21:41:11,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11" (1/1) ... [2018-07-20 21:41:11,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11" (1/1) ... [2018-07-20 21:41:11,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-20 21:41:11,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-20 21:41:11,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-20 21:41:11,598 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-20 21:41:11,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11" (1/1) ... No working directory specified, using /storage/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 [2018-07-20 21:41:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assert [2018-07-20 21:41:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assert [2018-07-20 21:41:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-20 21:41:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-20 21:41:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-20 21:41:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-20 21:41:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-20 21:41:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-20 21:41:11,931 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-20 21:41:11,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:41:11 BoogieIcfgContainer [2018-07-20 21:41:11,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-20 21:41:11,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-20 21:41:11,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-20 21:41:11,937 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-20 21:41:11,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:41:11" (1/3) ... [2018-07-20 21:41:11,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e085e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:41:11, skipping insertion in model container [2018-07-20 21:41:11,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:41:11" (2/3) ... [2018-07-20 21:41:11,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e085e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:41:11, skipping insertion in model container [2018-07-20 21:41:11,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:41:11" (3/3) ... [2018-07-20 21:41:11,941 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call1_true-termination.i [2018-07-20 21:41:11,959 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-20 21:41:11,966 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-20 21:41:12,012 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-20 21:41:12,013 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-20 21:41:12,013 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-20 21:41:12,013 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-20 21:41:12,013 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-20 21:41:12,013 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-20 21:41:12,013 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-20 21:41:12,013 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-20 21:41:12,013 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-20 21:41:12,029 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-07-20 21:41:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-20 21:41:12,036 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:41:12,037 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:41:12,037 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:41:12,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1907523353, now seen corresponding path program 1 times [2018-07-20 21:41:12,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:41:12,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:12,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:41:12,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:12,089 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:41:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:41:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:12,139 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-20 21:41:12,139 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-20 21:41:12,139 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-20 21:41:12,142 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-20 21:41:12,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-20 21:41:12,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-20 21:41:12,160 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-07-20 21:41:12,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:41:12,180 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-07-20 21:41:12,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-20 21:41:12,181 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-07-20 21:41:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:41:12,188 INFO L225 Difference]: With dead ends: 29 [2018-07-20 21:41:12,188 INFO L226 Difference]: Without dead ends: 12 [2018-07-20 21:41:12,192 INFO L578 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 [2018-07-20 21:41:12,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-20 21:41:12,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-20 21:41:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-20 21:41:12,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-20 21:41:12,232 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-07-20 21:41:12,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:41:12,232 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-20 21:41:12,233 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-20 21:41:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-20 21:41:12,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-20 21:41:12,233 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:41:12,234 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:41:12,235 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:41:12,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1235393916, now seen corresponding path program 1 times [2018-07-20 21:41:12,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:41:12,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:12,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:41:12,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:12,237 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:41:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:41:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:12,355 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-20 21:41:12,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-20 21:41:12,356 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-20 21:41:12,357 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-20 21:41:12,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-20 21:41:12,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-20 21:41:12,358 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-07-20 21:41:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:41:12,404 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-20 21:41:12,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-20 21:41:12,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-07-20 21:41:12,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:41:12,406 INFO L225 Difference]: With dead ends: 19 [2018-07-20 21:41:12,406 INFO L226 Difference]: Without dead ends: 14 [2018-07-20 21:41:12,407 INFO L578 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 [2018-07-20 21:41:12,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-20 21:41:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-20 21:41:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-20 21:41:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-20 21:41:12,411 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-07-20 21:41:12,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:41:12,411 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-20 21:41:12,412 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-20 21:41:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-20 21:41:12,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-20 21:41:12,412 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:41:12,413 INFO L358 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:41:12,413 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:41:12,413 INFO L82 PathProgramCache]: Analyzing trace with hash -463449046, now seen corresponding path program 1 times [2018-07-20 21:41:12,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:41:12,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:12,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:41:12,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:12,415 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:41:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:41:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:12,702 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:12,702 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:41:12,703 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-07-20 21:41:12,705 INFO L201 CegarAbsIntRunner]: [0], [3], [5], [11], [15], [19], [23], [25], [31], [32], [33], [35] [2018-07-20 21:41:12,757 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-20 21:41:12,757 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-20 21:41:12,863 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-20 21:41:13,399 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-20 21:41:13,411 INFO L272 AbstractInterpreter]: Visited 12 different actions 81 times. Merged at 3 different actions 31 times. Widened at 1 different actions 7 times. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-07-20 21:41:13,459 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-20 21:41:13,460 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:13,460 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:41:13,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:41:13,474 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:41:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:41:13,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:41:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:13,553 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:41:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:13,680 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:13,681 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/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 [2018-07-20 21:41:13,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:41:13,696 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:41:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:41:13,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:41:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:13,737 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:41:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:13,752 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:41:13,752 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 6 [2018-07-20 21:41:13,752 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:41:13,752 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-20 21:41:13,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-20 21:41:13,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-20 21:41:13,753 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2018-07-20 21:41:13,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:41:13,812 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-20 21:41:13,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-20 21:41:13,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-07-20 21:41:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:41:13,814 INFO L225 Difference]: With dead ends: 21 [2018-07-20 21:41:13,814 INFO L226 Difference]: Without dead ends: 16 [2018-07-20 21:41:13,814 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-20 21:41:13,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-20 21:41:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-20 21:41:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-20 21:41:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-20 21:41:13,816 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-07-20 21:41:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:41:13,827 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-20 21:41:13,827 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-20 21:41:13,827 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-20 21:41:13,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-20 21:41:13,827 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:41:13,828 INFO L358 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:41:13,828 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:41:13,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1653771184, now seen corresponding path program 2 times [2018-07-20 21:41:13,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:41:13,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:13,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:41:13,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:13,831 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:41:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:41:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:14,013 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:14,013 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:41:14,013 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:41:14,013 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:41:14,013 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:14,013 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:41:14,022 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-20 21:41:14,022 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-20 21:41:14,043 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-20 21:41:14,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:41:14,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:41:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:14,106 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:41:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:14,216 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:14,216 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/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 [2018-07-20 21:41:14,230 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-20 21:41:14,231 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-20 21:41:14,248 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-20 21:41:14,249 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:41:14,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:41:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:14,262 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:41:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:14,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:41:14,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 8 [2018-07-20 21:41:14,292 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:41:14,301 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-20 21:41:14,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-20 21:41:14,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-07-20 21:41:14,303 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-07-20 21:41:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:41:14,341 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-20 21:41:14,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-20 21:41:14,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-07-20 21:41:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:41:14,343 INFO L225 Difference]: With dead ends: 23 [2018-07-20 21:41:14,343 INFO L226 Difference]: Without dead ends: 18 [2018-07-20 21:41:14,344 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-07-20 21:41:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-20 21:41:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-20 21:41:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-20 21:41:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-20 21:41:14,349 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-07-20 21:41:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:41:14,349 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-20 21:41:14,349 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-20 21:41:14,350 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-20 21:41:14,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-20 21:41:14,350 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:41:14,350 INFO L358 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:41:14,351 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:41:14,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1202922230, now seen corresponding path program 3 times [2018-07-20 21:41:14,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:41:14,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:14,352 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-20 21:41:14,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:14,352 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:41:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:41:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:14,515 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:14,515 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:41:14,515 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:41:14,515 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:41:14,516 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:14,516 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:41:14,522 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-20 21:41:14,522 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-20 21:41:14,555 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-07-20 21:41:14,555 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:41:14,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:41:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:14,568 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:41:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:14,686 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:14,686 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/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 [2018-07-20 21:41:14,700 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-20 21:41:14,700 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-07-20 21:41:14,745 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-07-20 21:41:14,745 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:41:14,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:41:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:14,798 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:41:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:14,816 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:41:14,816 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 10 [2018-07-20 21:41:14,816 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:41:14,817 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-20 21:41:14,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-20 21:41:14,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-20 21:41:14,817 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-07-20 21:41:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:41:14,920 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-20 21:41:14,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-20 21:41:14,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-07-20 21:41:14,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:41:14,921 INFO L225 Difference]: With dead ends: 25 [2018-07-20 21:41:14,921 INFO L226 Difference]: Without dead ends: 20 [2018-07-20 21:41:14,921 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-20 21:41:14,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-20 21:41:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-20 21:41:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-20 21:41:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-20 21:41:14,927 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-07-20 21:41:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:41:14,927 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-20 21:41:14,927 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-20 21:41:14,927 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-20 21:41:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-20 21:41:14,928 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:41:14,928 INFO L358 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:41:14,928 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:41:14,928 INFO L82 PathProgramCache]: Analyzing trace with hash 2001190940, now seen corresponding path program 4 times [2018-07-20 21:41:14,928 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:41:14,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:14,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-20 21:41:14,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:14,930 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:41:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:41:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:15,031 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:15,031 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:41:15,031 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:41:15,031 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:41:15,031 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:15,032 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:41:15,041 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-20 21:41:15,041 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-20 21:41:15,053 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-20 21:41:15,053 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:41:15,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:41:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:15,063 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:41:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:15,609 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:15,610 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/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 [2018-07-20 21:41:15,635 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-20 21:41:15,635 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-07-20 21:41:15,657 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-20 21:41:15,657 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:41:15,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:41:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:15,671 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:41:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:15,679 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:41:15,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 12 [2018-07-20 21:41:15,679 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:41:15,680 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-20 21:41:15,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-20 21:41:15,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-07-20 21:41:15,681 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2018-07-20 21:41:15,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:41:15,858 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-20 21:41:15,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-20 21:41:15,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-07-20 21:41:15,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:41:15,860 INFO L225 Difference]: With dead ends: 27 [2018-07-20 21:41:15,861 INFO L226 Difference]: Without dead ends: 22 [2018-07-20 21:41:15,861 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-07-20 21:41:15,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-20 21:41:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-20 21:41:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-20 21:41:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-20 21:41:15,867 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-07-20 21:41:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:41:15,868 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-20 21:41:15,868 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-20 21:41:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-20 21:41:15,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-20 21:41:15,869 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:41:15,869 INFO L358 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:41:15,869 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:41:15,869 INFO L82 PathProgramCache]: Analyzing trace with hash 338275266, now seen corresponding path program 5 times [2018-07-20 21:41:15,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:41:15,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:15,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-20 21:41:15,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:15,871 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:41:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:41:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:16,050 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:16,050 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:41:16,050 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:41:16,050 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:41:16,050 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:16,050 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:41:16,057 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-20 21:41:16,058 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-20 21:41:16,077 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-07-20 21:41:16,077 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:41:16,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:41:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:16,102 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:41:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:16,255 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:16,256 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/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 [2018-07-20 21:41:16,269 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-07-20 21:41:16,270 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-07-20 21:41:16,308 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-07-20 21:41:16,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:41:16,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:41:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:16,325 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:41:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:16,332 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:41:16,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 14 [2018-07-20 21:41:16,332 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:41:16,333 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-20 21:41:16,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-20 21:41:16,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-07-20 21:41:16,334 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2018-07-20 21:41:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:41:16,401 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-20 21:41:16,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-20 21:41:16,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-07-20 21:41:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:41:16,403 INFO L225 Difference]: With dead ends: 29 [2018-07-20 21:41:16,403 INFO L226 Difference]: Without dead ends: 24 [2018-07-20 21:41:16,403 INFO L578 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 [2018-07-20 21:41:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-20 21:41:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-20 21:41:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-20 21:41:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-20 21:41:16,408 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-07-20 21:41:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:41:16,408 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-20 21:41:16,408 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-20 21:41:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-20 21:41:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-20 21:41:16,409 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:41:16,409 INFO L358 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:41:16,409 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:41:16,410 INFO L82 PathProgramCache]: Analyzing trace with hash 4146664, now seen corresponding path program 6 times [2018-07-20 21:41:16,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:41:16,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:16,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-20 21:41:16,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:41:16,411 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:41:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:41:18,654 WARN L1010 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* 178956971 c_main_~y~0) 89478484))) (<= .cse0 (* 268435456 (div .cse0 268435456)))) is different from false [2018-07-20 21:41:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 20 refuted. 10 times theorem prover too weak. 0 trivial. 12 not checked. [2018-07-20 21:41:46,151 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:46,151 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:41:46,151 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:41:46,151 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:41:46,151 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:41:46,151 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:41:46,158 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-20 21:41:46,158 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-20 21:41:46,190 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-07-20 21:41:46,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:41:46,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:41:58,183 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 19 [2018-07-20 21:41:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:41:58,453 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:42:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:42:49,393 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:42:49,393 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/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 [2018-07-20 21:42:49,408 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-07-20 21:42:49,408 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-07-20 21:42:49,475 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-07-20 21:42:49,475 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-20 21:42:49,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:42:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:42:56,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:43:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:00,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:43:00,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 26 [2018-07-20 21:43:00,413 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:43:00,413 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-20 21:43:00,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-20 21:43:00,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=451, Unknown=35, NotChecked=46, Total=650 [2018-07-20 21:43:00,414 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 19 states. [2018-07-20 21:43:01,011 WARN L169 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-07-20 21:43:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:43:01,035 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-20 21:43:01,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-20 21:43:01,036 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23 [2018-07-20 21:43:01,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:43:01,036 INFO L225 Difference]: With dead ends: 31 [2018-07-20 21:43:01,036 INFO L226 Difference]: Without dead ends: 26 [2018-07-20 21:43:01,037 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 104.0s TimeCoverageRelationStatistics Valid=124, Invalid=495, Unknown=35, NotChecked=48, Total=702 [2018-07-20 21:43:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-20 21:43:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-20 21:43:01,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-20 21:43:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-20 21:43:01,042 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-07-20 21:43:01,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:43:01,043 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-20 21:43:01,043 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-20 21:43:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-20 21:43:01,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-20 21:43:01,044 INFO L350 BasicCegarLoop]: Found error trace [2018-07-20 21:43:01,044 INFO L358 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-20 21:43:01,044 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-20 21:43:01,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1029107342, now seen corresponding path program 7 times [2018-07-20 21:43:01,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-20 21:43:01,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:01,045 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-20 21:43:01,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-20 21:43:01,045 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-20 21:43:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:01,351 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:01,351 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-20 21:43:01,352 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-07-20 21:43:01,352 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-20 21:43:01,352 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:01,352 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-20 21:43:01,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:01,364 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:43:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:01,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:43:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:01,413 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:43:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:01,714 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-20 21:43:01,714 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/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 [2018-07-20 21:43:01,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-20 21:43:01,732 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-20 21:43:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-20 21:43:01,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-20 21:43:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:01,785 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-20 21:43:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-20 21:43:01,844 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-20 21:43:01,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 16 [2018-07-20 21:43:01,845 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-20 21:43:01,845 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-20 21:43:01,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-20 21:43:01,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-07-20 21:43:01,846 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2018-07-20 21:43:01,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-20 21:43:01,873 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-07-20 21:43:01,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-20 21:43:01,874 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-07-20 21:43:01,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-20 21:43:01,875 INFO L225 Difference]: With dead ends: 26 [2018-07-20 21:43:01,875 INFO L226 Difference]: Without dead ends: 0 [2018-07-20 21:43:01,876 INFO L578 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 [2018-07-20 21:43:01,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-20 21:43:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-20 21:43:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-20 21:43:01,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-20 21:43:01,876 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-07-20 21:43:01,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-20 21:43:01,876 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-20 21:43:01,876 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-20 21:43:01,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-20 21:43:01,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-20 21:43:01,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-20 21:43:02,322 WARN L169 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-07-20 21:43:02,330 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-07-20 21:43:02,330 INFO L424 ceAbstractionStarter]: At program point __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-07-20 21:43:02,330 INFO L421 ceAbstractionStarter]: For program point L3''(lines 2 7) no Hoare annotation was computed. [2018-07-20 21:43:02,330 INFO L421 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-07-20 21:43:02,330 INFO L421 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-07-20 21:43:02,331 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-07-20 21:43:02,331 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-07-20 21:43:02,331 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-07-20 21:43:02,331 INFO L424 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-07-20 21:43:02,331 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-07-20 21:43:02,331 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-07-20 21:43:02,331 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-07-20 21:43:02,331 INFO L417 ceAbstractionStarter]: At program point L11'''(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))) [2018-07-20 21:43:02,331 INFO L421 ceAbstractionStarter]: For program point mainFINAL(lines 8 16) no Hoare annotation was computed. [2018-07-20 21:43:02,331 INFO L417 ceAbstractionStarter]: At program point L11''(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))) [2018-07-20 21:43:02,331 INFO L421 ceAbstractionStarter]: For program point L11(lines 11 14) no Hoare annotation was computed. [2018-07-20 21:43:02,331 INFO L421 ceAbstractionStarter]: For program point mainEXIT(lines 8 16) no Hoare annotation was computed. [2018-07-20 21:43:02,332 INFO L424 ceAbstractionStarter]: At program point mainENTRY(lines 8 16) the Hoare annotation is: true [2018-07-20 21:43:02,335 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,336 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,336 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,336 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,336 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,336 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,336 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,336 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,336 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,337 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,337 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,337 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,337 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,337 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,337 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,338 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,338 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,338 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,346 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,346 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,346 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,346 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,346 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,347 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,347 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,347 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,347 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,347 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,348 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,348 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,348 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,348 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,348 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,349 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,349 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,349 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:43:02 BoogieIcfgContainer [2018-07-20 21:43:02,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-20 21:43:02,353 INFO L168 Benchmark]: Toolchain (without parser) took 111053.34 ms. Allocated memory was 309.3 MB in the beginning and 528.0 MB in the end (delta: 218.6 MB). Free memory was 255.8 MB in the beginning and 470.0 MB in the end (delta: -214.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 5.3 GB. [2018-07-20 21:43:02,354 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-20 21:43:02,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.28 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 245.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-07-20 21:43:02,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.87 ms. Allocated memory is still 309.3 MB. Free memory is still 245.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-20 21:43:02,355 INFO L168 Benchmark]: Boogie Preprocessor took 27.78 ms. Allocated memory is still 309.3 MB. Free memory was 245.7 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-07-20 21:43:02,356 INFO L168 Benchmark]: RCFGBuilder took 333.93 ms. Allocated memory was 309.3 MB in the beginning and 475.5 MB in the end (delta: 166.2 MB). Free memory was 243.8 MB in the beginning and 445.7 MB in the end (delta: -201.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. [2018-07-20 21:43:02,357 INFO L168 Benchmark]: TraceAbstraction took 110419.09 ms. Allocated memory was 475.5 MB in the beginning and 528.0 MB in the end (delta: 52.4 MB). Free memory was 445.7 MB in the beginning and 470.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 28.1 MB. Max. memory is 5.3 GB. [2018-07-20 21:43:02,366 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 245.28 ms. Allocated memory is still 309.3 MB. Free memory was 255.8 MB in the beginning and 245.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 16.87 ms. Allocated memory is still 309.3 MB. Free memory is still 245.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * Boogie Preprocessor took 27.78 ms. Allocated memory is still 309.3 MB. Free memory was 245.7 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 333.93 ms. Allocated memory was 309.3 MB in the beginning and 475.5 MB in the end (delta: 166.2 MB). Free memory was 243.8 MB in the beginning and 445.7 MB in the end (delta: -201.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 110419.09 ms. Allocated memory was 475.5 MB in the beginning and 528.0 MB in the end (delta: 52.4 MB). Free memory was 445.7 MB in the beginning and 470.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 28.1 MB. Max. memory is 5.3 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 [2018-07-20 21:43:02,374 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,374 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,374 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,375 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,375 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,375 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,375 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,375 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,375 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,375 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,375 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,375 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,375 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,376 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,376 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,376 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,376 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,376 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,377 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,377 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,377 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,378 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,378 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,378 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,378 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,378 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,378 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,379 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,379 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,379 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,379 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,379 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,379 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,380 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,380 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_46,QUANTIFIED] [2018-07-20 21:43:02,380 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, 110.3s OverallTime, 9 OverallIterations, 8 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 127 SDtfs, 2 SDslu, 518 SDs, 0 SdLazy, 304 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 575 GetRequests, 476 SyntacticMatches, 19 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 106.2s 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, 0.7s AbstIntTime, 1 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, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 106.7s 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/underapprox_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-20_21-43-02-394.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/underapprox_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-20_21-43-02-394.csv Received shutdown request...